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Applied Mechanics Division
2014 Newsletter
Applied Mechanics Executive Committee (2013-‐2014)
Message from the Chair
Timoshenko Medalist and Banquet Speech
Other ASME/AMD Medals & Awards
News from the Technical Committees
News from the ASME-‐AMD Journals
Other Awards
Other News
Yuri Bazilevs, Editor
www.asme.org/divisions/amd
Report from the Chair
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Applied Mechanics Division 2013-2014 Executive Committee
Message from the Chair As June draws to a close, so also does my term on the Executive Committee of the Applied Mechanics Division of ASME. Over the past five years, the last year as Chair, I have worked with a truly remarkable and dedicated group, including past Chairs (in chronological order) Zhigang Suo (Harvard University), Tayfun Tezduyar (Rice University), Ares Rosakis (Caltech), and Ken Liechti (University of Texas at Austin) and current members Huajian Gao (Brown University), Peter Wriggers (Leibniz Universitat Hannover), Arun Shukla (University of Rhode Island), and Pradeep Sharma (University of Houston). I thank them all for their exceptional service to the Division. I have also had the privilege of working with the Chair and Vice-‐Chair of the Basic Engineering Group Operating Board (BEGOB), George Papadopoulos and Rick Cowan, respectively. AMD continues to have the largest membership of the 6 divisions within the Basic Engineering Group, the others being Bioengineering, Fluids Engineering, Heat Transfer, Materials, and Tribology. The Executive Committee has a number of major responsibilities, including conference planning and execution, oversight of its two journals JAM and AMR, maintenance and development of awards, and interfacing with the AMD Technical Committees, all of which require a sustained level of effort. As of July 1, according to the EC succession plan, Huajian will become Chair; Peter, Vice-‐Chair; Arun, Program Chair; and Pradeep, Vice-‐Program Chair. I am delighted to welcome Balakumar Balachandran (University of Maryland, College Park) as Secretary of the EC beginning July 1. Bala is an outstanding dynamicist and mechanician who previously served as Chair of the AMD Dynamics and Control of Systems and Structures Committee. Dennis Kochmann (Caltech)
Vice-Chair Huajian Gao
Program Vice-Chair Arun Shukla
Secretary Pradeep Sharma
Program Chair Peter Wriggers
Chair Lawrence Bergman
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and Yuri Bazilevs (University of California, San Diego) will continue their valuable service to the EC as Recording Secretary and Newsletter Editor, respectively. This team will provide the leadership to AMD during what will most assuredly be a time of change and challenge, not only for the Division but for all of ASME, with a major reorganization looming. I’m confident, though, that AMD will remain in good hands for the foreseeable future. IMECE 2013 The AMD was well-‐represented at IMECE 2013, which was held in San Diego, CA, November 15-‐21. Peter Wriggers and Arun Shukla were the Chair and Vice-‐Chair, respectively, of Track 10, Mechanics of Solids, Structures and Fluids, which had more than 500 presentations spread over 38 symposia and 83 sessions. In addition, AMD co-‐sponsored symposia and sessions in Tracks 3, Biomedical and Biotechnology Engineering, and 4, Dynamics, Vibration and Control, accounting for nearly 250 additional presentations. The Medalists’ session included the Drucker medalist, Yonggang Huang, whose presentation was titled “Mechanics of Stretchable Electronics”; the Ted Belytschko Applied Mechanics Award recipient, Gui-Rong Liu, who presented, “On Smoothed Finite Element Methods”; and the Thomas K. Caughey Dynamics Award recipient, Lothar Gaul, whose talk was titled, “Acoustic Fluid-‐Structure Interaction”. The Koiter Lecture was delivered by Norman Fleck, whose presentation was titled, “Nanolattice Structures with Gyroid Topology”. AMD members recognized at the Honors Assembly included Richard Christensen, the Timoshenko Medal recipient; Sia Nemat-Nasser, who received the ASME Medal; and Ted Belytchko, who was made an Honorary Member of ASME. The Applied Mechanics Division Annual Honors and Awards Banquet and Ceremony was extremely well attended, to the extent that there were an insufficient number of seats to accommodate all of the ticket holders. One of the highlights of the evening was Richard Christensen’s speech accompanying his acceptance of the Timoshenko Medal. He spoke of technical generations of mechanicians, from Timoshenko to the present, and the unique characteristics of each. Others receiving Society-‐level awards included Norman Fleck, the Warner T. Koiter Medalist, and Yonggang Huang, the Daniel C. Drucker Medalist. Those receiving Division-‐level awards were Lother Gaul, the Thomas K. Caughey Awardee; Gui-‐Rong Liu, the Ted Belytschko Applied Mechanics Awardee; and Wei Cai, the Thomas J. R. Hughes Young Investigator Awardee. The AMD-‐Haythornthwaite Research Initiation Grant Program had another successful year, with 29 proposals submitted for review by the members of the AMD EC. The four successful proposals were authored by Steven Cranford (Northeastern University), “Multi-‐phase Topologically Controlled Structural Fuses Inspired by the Mussel Byssus”; Addis Kidane (University of South Carolina), “A Novel 3D Full-‐Field Deformation Measurement at a Temperature Higher Than 1000 °C”; Christian Linder (Stanford University), “Design of Nanostructured Electrode Materials in Microfluidic Microbial Fuel Cells”; and Meredith Silberstein (Cornell University) “Mechanochemically Active Polymers: Development and Validation of Theory”. The first three proposals received funding from the Haythorntwaite Foundation, while the fourth was supported by the AMD. The Haythornthwaite Travel Grant Award Program for Graduate Students, sponsored by the Haythornthwaite Foundations, was also successful, funding 10 proposals out of 16 submitted. The best of those 10, as judged by the EC, was the given the Best Student Paper Award by the AMD. The recipient was Sahab Babaee (Harvard University), “Exploiting instabilities to design 3D soft metamaterials”. 2014 AMD Summer Meeting The Division participated in the US National Congress on Theoretical and Applied Mechanics, which was held June 15-‐20, at Michigan State University in Lansing. The conference co-‐chairs were John
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Foss and Thomas Pence, both of MSU, and the scientific chairperson was Thomas J. R. Hughes, of the University of Texas at Austin. More than 800 abstracts were received. IMECE 2014 Preparations are well under way for IMECE 2014, to be held in Montreal, Quebec, Canada, November 14-‐20. Arun Shukla and Pradeep Sharma will serve as chair and co-‐chair, respectively, of Track 10, Mechanics of Solids, Structures and Fluids, and more than 500 abstracts and papers have been received to date. The following AMD members will be recognized at the AMD Honors and Awards Banquet and Ceremony on Tuesday, November 18:
Robert McMeeking (UCSB) Timoshenko Medal Lallit Anand (MIT) Drucker Medal Guruswami Ravichandran (Caltech) Koiter Medal Glaucio Paulino (UIUC) Ted Belytschko Applied Mechanics Award Alexander Vakakis (UIUC) Thomas K. Caughey Dynamics Award Katia Bertoldi (Harvard) Thomas J. R. Hughes Young Investigator Award Ryan Elliot (U Minn) Thomas J. R. Hughes Young Investigator Award
Please join the members of the AMD EC in congratulating the awardees. McMAT 2015 Planning for the Applied Mechanics and Materials Conference (McMAT) continues, with the Materials Division taking the lead. The meeting is planned be held on June 24-‐26 in Seattle, WA, and Junlan Wang will serve as conference chair. Members of AMD are encouraged to support the meeting, which will cycle back to AMD in 2019. Journal of Applied Mechanics Yonggang Huang, Editor of JAM, continues his efforts to increase quality and achieve publication times consistent with competitive journals. While the review process has improved significantly, to an average first decision within 15 days and average final decision in 33 days, the publication process remains problematic and is the focus of his attention as he works with ASME toward improvement. An annual best paper award for young authors was established in 2013, sponsored by the AMD. The first recipient, announced at IMECE, was Asha Nurse of NIST.
Applied Mechanics Reviews Harry Dankowicz, Editor of AMR, has made significant progress in revamping the journal in 2012. Six issues were published in 2013, which included 17 papers and 360 pages. He plans special issues in cooperation with other journals and has embarked on a number of activities including the publication of lecture notes from, for example, the Midwest Mechanics Series. He has also initiated a series of interviews with various AMD researchers, several of which have been published as podcasts available on the ASME digital database. The EC recently approved a best paper award for AMR authors in the name of Lloyd Donnell, first editor of AMR, to be given biannually in even years.
Haythornthwaite Foundation Awards The Haythornthwaite Foundation will continue their support in 2014 of the Research Initiation Grant program for young faculty and the Travel Award program for students. Professor Jennifer Haythornthwaite of the Johns Hopkins University, representing the Foundation, graciously agreed to support 4 initiation grants and up to 10 travel awards this year. Both award programs will have been announced via direct e-‐mail to AMD members as well as on the ASME web site by the time this newsletter is published. Awardees will be announced at the 2014 IMECE.
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Technical Committees The 19 Technical Committees operating under the auspices of the AMD will continue to be encouraged to remain active. The primary functions of the committees include proposing and organizing symposia at IMECE and other meetings, providing nominations for the 3 Society-‐ and 3 Division-‐level awards as well as the Haythornthwaite award programs, and maintaining a significant web presence. Closing Remarks In closing, I would like to recognize and thank the many individuals who contributed to the continued success of AMD during the past year. I am particularly grateful to Ken Liechti, who graciously filled in for me at the 2013 IMECE when my wife’s illness prevented me from attending and patiently answered my many EC-‐related questions throughout the year; to all of the current members of the AMD EC for their boundless energy and support; and to Donna Mojahedi who serves as the corporate memory of the EC as well as organizer extraordinaire. I’m grateful to the editors and associate editors of our two journals, JAM and AMR, and to the organizers of the many symposia at IMECE and other AMD-‐related conferences for their valuable service. Thanks also to ASME staff members Stacey Cooper and Lily Le for their assistance and to Jacinta McComie-Cates in particular for the many tasks she does so well on behalf of the Division. Finally, my thanks go to the many too numerous to mention who support the AMD through attendance at conferences, publishing and reviewing technical papers, and participating on Technical Committees. Lawrence A. Bergman, 2013- 2014 Chair, Applied Mechanics Division
THE 2013 AMD AND ASME SOCIETY AWARDS
TIMOSHENKO MEDAL Richard Christensen
The Timoshenko Medal was established in 1957 and is conferred annually in recognition of distinguished contributions to the field of applied mechanics. Instituted by the Applied Mechanics Division, it honors Stephen P. Timoshenko, world renowned authority in the field, and it commemorates his contributions as author and teacher.
The 2013 Timoshenko Medal was awarded to Richard M. Christensen, Professor Emeritus, Stanford University “numerous distinguished contributions to applied mechanics, including the theory of heterogeneous solids, composite materials and laminated plates; the geometry of ultra low density materials; the viscoelasticity and rheology of polymers and non-Newtonian fluids; and the failure of isotropic and anisotropic materials.” The acceptance speech that follows was delivered at the Applied Mechanics Honors and Award Banquet at the 2013 ASME International Mechanical Engineering Congress in San Diego, CA, on Tuesday, November 19, 2013:
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Thank you to all of you for this fine honor.
For sure I have been around a long time and I have seen it all, so I’ll give you some impressions of what I have observed over the long haul in the world of applied mechanics. Let me start by mentioning that I have a technical paper coming out in Journal of Applied Mechanics in the January 2014 issue. This was kindly facilitated by the technical editor, Yonggang Huang. If you wish, please consider that as my formal speech, but no one wants to hear about equations tonight. Instead I’ll talk a little about technical generations. Each generation has its own character and its own challenges. What is a generation if not a collection of workers, individuals. So this is really about individuals. It’s not so much about exactly what each of them did, but more about the how and the why they did what they did. What was their propulsion system, their energy source? Yes, people are ambitious and everyone likes recognition, but that’s only about 5% of it. There’s got to be something more that supplies the sustained drive. And its probably uniquely different in scientific research than it is in other avenues of endeavor. Let’s start with Timoshenko and his generation. Because Timoshenko was at Stanford in the latter part of his career, we’ll start right there, at Stanford. These days engineering at Stanford is usually closely identified with computer science and electrical engineering. The engineering library is housed in a splendid new building, made possible by silicon valley donations. Could you guess what is featured in the engineering library at Stanford? There is one thing that is the focal point in a dominating setting. It is the collection of Timoshenko’s personal library and his private papers. You stand there looking at it and it just about feels like being on sacred ground. One day I went over to the library and got them to unlock the big imposing bookcases for me. They are under lock and key. Somehow I don’t think Timoshenko would have appreciated requiring a username and password to access his library. There is a dedicated, particular librarian at Stanford, Sarah Lester, who is in charge of the entire Timoshenko collection. Any of you Timoshenko history scholars could contact her directly. So I browsed around for a while in his first edition books and original manuscripts. For example in his elasticity book with Goodier, penciled in the margin beside a particular equation was a very neat note that said that Mindlin says the coefficient should be 2. Mindlin was a very prominent mechanician in his own right. I’m sure that coefficient got resolved or corrected in later editions. I’ll now note a few of the things that I saw in the Timoshenko collection. In one particular source, it says that “Timoshenko was offered a Professorship in Mechanical Engineering and began teaching at Stanford in the fall of 1936. It should be noted that Stanford thought of offering Dr. Timoshenko a professorship in 1925 but at that time he was not as well known and it was felt that a man past 45 was a questionable risk.” Timoshenko would have been 47 at the time. When they finally saw the light and hired him he was 58. You can imagine that when I read this it made me squirm a little. Timoshenko wrote his dissertation under the great Prandtl, in Germany. Prandtl was famous because not only did he develop boundary layer theory for fluid mechanics, he also was a highly recognized contributor in solid mechanics. Of course one could turn that around and say that Prandtl was lucky to have the great Timoshenko as a student. In later years Prandtl told Timoshenko that he was a very good student, he didn’t bother him. Some things never change. Timoshenko didn’t need or want any direction from Prandtl. He knew exactly what he wanted to do and he probably was quite sure where he was going as well.
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In 1927 Timoshenko and George Eaton, who was his boss at Westinghouse Electric, formed the Applied Mechanics Division of ASME. Before that time there were no divisions or sub-groups in ASME. To make such a proposal to ASME must have been a very big deal. The working title for the proposed new entity was: “The Division of Mechanics, Physics and Applied Mathematics” Apparently that name didn’t fly with ASME and the name of the new sub-group became the Applied Mechanics Division. Interestingly the originally proposed name would have fit very well with exactly what we do today. Sometimes the field is now called theoretical and applied mechanics, sometimes continuum mechanics, sometimes engineering mechanics, and sometimes just mechanics. I’ll always refer to it as applied mechanics tonight because we’re at the Applied Mechanics Banquet. At the risk of over-generalization I would say that Timoshenko epitomized his generation and his generation was more about careful, scholarly consolidation than anything else. But consolidation should not be confused with minimization or small scale goals. However you define it, Timoshenko himself sharply stood out and still stands out as the consummate technical educator. By the measures of his time, that was the ultimate contribution. Then, after Timoshenko’s time came the next generation. They were ushered in and they certainly created a large and forceful presence. They set out to revolutionize the field. Did they or didn’t they succeed in that? Let’s defer judgment on that for a bit, first I’ll tell you about just a few of the captains leading the charge. These will be simple, quick word pictures that hopefully make these leaders a little more than just some distant, vaguely remembered names. When this presumptive revolution started I was a young nobody intently watching the proceedings from the back bench. Eli Sternberg was lean, neat, formal, and precise. His lectures were works of art and his research papers were just about perfect too. Ronald Rivlin couldn’t have been more different. He was rumpled, exuberant, and more than a little flamboyant. Rivlin was turned on every minute of every day, high intensity. Eric Reissner was fiercely protective of his fine contributions and his reputation. But if that wasn’t on the line, he could be charming and urbane. Clifford Truesdell cultivated the image of the ultimate scholar and he did a pretty good job of it. Dan Drucker did his far reaching work when he was a young man and then went on to commit much of his time and energy to the benefit and furtherance of applied mechanics. His was the purist form of professional dedication to applied mechanics that I ever saw. And there were many, many other outstanding contributors than just those above. Not surprisingly many of those people had outsized egos. Were those egos justified, deserved? Maybe that’s another way of asking if they succeeded in revolutionizing the field. No doubt there are widely diverse opinions on this. I can only give you my view in the matter. I think they succeeded brilliantly. It seems to me they were an all time, all star generation. As the years went by I got to know most of those people quite well. I didn’t follow in the technical direction of any of them because I always had my own theoretical interests and activities, but
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I was closely aware of their work. Was there one or more of those many outstanding people who contributed above all others?
For me there was one who earned and deserves applied mechanics immortality. That would be Rivlin, Ronald Rivlin. His mathematics was completely rigorous, his insight first rate, and for the most part his results were surprisingly general, in an extremely difficult field, nonlinear elasticity. Rivlin picked up the whole field in his hands and moved it forward some. He moved it as much or more than anyone before him and more than any of his contemporaries. Ronald Rivlin was extraordinary. Then came my generation. It’s probably not appropriate for me to say much about my own generation. We’ll check back later for an independent appraisal on that. In that spirit I also won’t say much about myself other than to mention my latest work. It’s a new book from Oxford entitled The Theory of Materials Failure. My general work and background are available elsewhere. However, I can’t pass by my generation without saying something special about one particular person. There’s one in it who stood for the very best. That is Jan Achenbach. He was the leader, and what a leader he was and is. Next let’s look at the generation following my generation. Don’t ask me how you define technical generations, you just feel it. This generation is really something, and they were right from their beginnings. They were going full bore right out of the gate. I don’t need to name names but there is a tremendous line up of very creative, very productive people. When all is said and done I think this generation following mine will be right up there with the incredible generation preceding mine. More will be said shortly of one very special person from this generation. Now we come to the emerging, concurrent generation, maybe that’s most of you. Its not really a generation in the usual sense, rather its simply the state of current activities in applied mechanics. I think of all of you, or most of you, as the nano-scale whiz kids. Everything is nano-scale these days and its a very exciting time. You smart young people are probing what had been unknown territory until now. You are exploring the physical interactions at extremely small scales and an avalanche of new results and new understandings are emerging. I wish I could turn the clock back and be right in the middle of it with you. Is it useful in general to think in terms of technical generations? Probably not, probably I am the only one who thinks that way. But at least it serves the present purpose of framing applied mechanics in these more modern times since its classical beginnings. As time passes beyond that of a particular generation, the individual contributions and accomplishments blend in and recede into the fabric of the technical progress of that period. But there usually are a few landmark achievements (people) that rise above and transcend generations. Timoshenko and Rivlin are two very different such examples. Contributing and competing at that level requires a supreme commitment and motivation, far beyond any simple matter of ego. They had it, they had a vision for the future. I would like to finish with one or two more such examples. These comprise additional, modern examples of the vitality of applied mechanics and some of its truly exceptional people scattered across the generations. In the 1960’s I was the chair of what was then called the Junior Honors Committee of the Applied Mechanics Division. It was the lowest level committee and it only made recommendations to higher committees for outstanding papers in the Journal of Applied Mechanics by young authors under a certain age. We went through the papers of the preceding year and there was one stunning paper by a young author. It would have been the single most outstanding paper regardless of the age of the
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author. Our strong recommendation went up the line and it was successful. The young author’s name was James R. Rice. Jim Rice received the Henry Hess Medal in 1969 for his fracture related paper on the J-integral. What a seminal paper that was, many thousands have read it and used it to great advantage. And look at where Jim Rice’s career has gone and what he has done. You have to respect a field that gives a young person an opportunity, a recognition, and then utilizes that marvelous talent forever after. That’s applied mechanics for you. The other example is in statistics. Most people don’t associate statistics with applied mechanics. But that is gradually changing. These days Bayesian statistics is much in style. Its an attractive formalism but it may or may not deliver the goods in some critical situations. For example for a future manned mission to Mars the fuel and oxidizer would have to be stored in pressure vessels for the return voyage. These pressure vessels must be certifiable to a 10 to the -6 (man safe) reliability level. Broad formalisms are not adequate to grapple with that problem. Specific, concrete probability distribution functions are required. There was one person who was far ahead of his time in recognizing and appreciating these types of problems, and he nailed it. That would be Wallodi Weibull. He worked on such problems in the 1930’s and 40’s and finally published the resolute finale in 1951 in the Journal of Applied Mechanics. The Weibull distribution offered then, offers now, and always will offer utmost utility and clarity for materials failure problems. It was a remarkable achievement. His paper reads as well today as it did 60 years ago.
By the way, do you notice how the Journal of Applied Mechanics keeps coming up again and again. That’s what flagship journals do.
Applied mechanics has a long and a grand tradition of providing results that are precise, that
are correct, and most of all that are deeply rooted in the fundamentals. Put that together with the intellectual stimulus and drive needed to push beyond the expected, the conventional, and you have our field’s complete and priceless heritage. Such a special past has to promise much for the future. But the future is in your hands and I hope all of you have as much satisfaction and pleasure with applied mechanics as I have had.
There are many individuals whom I should like to acknowledge. To keep the list below an hour
or two let me emphasize the present. Zdenek Bazant and George Dvorak are good friends and colleagues of long standing. Acknowledgment is due my many friends at Stanford University, especially George Springer and Steve Tsai. Yasushi Miyano and I have enjoyed cooperating on research for a long time. Yapa Rajapakse has always been a supportive friend and colleague..
Part of my family is present. Many of you know my wife Kristy so she needs no introduction.
Next to her is our son Kurt. This is his first and probably his last ASME since he lives in a different technical world. He is a senior editor at C-Net. He is my webmaster, that is to say he is very helpful in putting my technical website <FailureCriteria.com> onto the internet. It wouldn’t happen without him.
Finally let me say how deeply appreciative I am of my many friends in applied mechanics, past
and present. Thank you so very much. Richard M. Christensen Professor Emeritus, Stanford University
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DANIEL C. DRUCKER MEDAL Yonggang Huang
The Daniel C. Drucker Medal was established in 1997 and is conferred in recognition of distinguished contributions to the field of applied mechanics and mechanical engineering through research, teaching and service to the community over a substantial period of time. Instituted by the Applied Mechanics Division, the medal honors Dr. Daniel Drucker and commemorates his service to the profession.
The 2013 Daniel C. Drucker Medal was awarded to Professor Yonggang Huang from Northwestern University “fundamental and applied contributions to mechanics of materials and structures across multiple scales.” WARNER T. KOITER MEDAL Norman Fleck
The Warner T. Koiter Medal, established in 1996, is bestowed in recognition of distinguished contributions to the field of solid mechanics with special emphasis on the effective blending of theoretical and applied elements of the discipline, and on a high degree of leadership in the international solid mechanics community.
The award was funded by the Technical University of Delft, The Netherlands, to honor Warner T. Koiter for his fundamental work in nonlinear stability of structures in the most general sense, for his diligence in the effective application of these theories, his international leadership in mechanics, and his effectiveness as a teacher and researcher. The 2013 Warner T. Koiter Medal was given to Professor Norman A. Fleck from the University of Cambridge, UK, “for combined theoretical and experimental contributions regarding the compressive failure of fiber reinforced composites; in the area of plasticity, particularly metal foams and lattice materials; and to the development of blast-resistant structures, all conducted within an international setting.”
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TED BELYTSCHKO APPLIED MECHANICS AWARD Gui-Rong Liu
The Ted Belytschko Applied Mechanics Award is bestowed to an outstanding individual for significant contributions in the practice of engineering mechanics. The contributions of this individual may result from innovation, research, design, leadership or education. The award was established in 1988 and was renamed the Ted Belytschko Applied Mechanics Award in 2008.
The 2013 Ted Belytschko Applied Mechanics Award was conferred on Professor Gui-‐Rong Liu from the University of Cincinnati, “for making fundamental contributions to smoothed FEM and mesh-free methods and applying them to problems in solid mechanics and fluid-structure interaction.” THOMAS J.R. HUGHES YOUNG INVESTIGATOR AWARD Wei Cai
The Thomas J.R. Hughes Young Investigator Award recognizes special achievement for young investigators in Applied Mechanics. The nominees must not have reached their 40th birthday at the time of nomination. The award was established in 1998 and renamed the Thomas J.R. Hughes Young Investigator Award in 2008.
Thomas J.R. Hughes Young Investigator Award was given to Professor Wei Cai from Stanford University, “for contributions to theory and simulations of defect microstructures across atomic, mesoscopic and continuum scales, and for developing new atomistic simulation methods for long time-scale processes, such as crystal growth and self-assembly.” THOMAS K. CAUGHEY DYNAMICS AWARD Lothar Gaul
The Thomas K. Caughey Dynamics Award was established in 2008 and is conferred in recognition of an individual who has made significant contributions to the field of nonlinear dynamics through practice, research, teaching and/or outstanding leadership.
The 2013 Thomas K. Caughey Dynamics Award was conferred on Professor Lothar Gaul from University of Stuttgart, Germany “for pioneering contributions in structural dynamics and adaptive systems, including numerical simulation and computer-based testing, including the uncertainties, particularly with regard to damping in structural systems and contact mechanics associated with the mechanical connections and interfaces.”
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2013 HAYTHORNTHWAITE FOUNDATION AWARDS
Research Initiation Grant Awards In 2011 the Applied Mechanics Division, through the generosity the Haythornthwaite Foundation, established a new divisional award, the Haythornthwaite Research Initiation Grant. This new grant targets university faculty that are at the beginning of their academic careers engaged in research in theoretical and applied mechanics. The four recipients of the 2013 grants are Steven Cranford (Northeastern University), Addis Kidane (University of South Carolina), Christian Linder (Stanford University), and Meredith Silberstein (Cornell University). The winning project titles and descriptions are provided in what follows.
Steven Cranford
Multi-phase Topologically Controlled Structural Fuses Inspired by Nature. The goal of the proposed project, through computational and experimental efforts, is to develop a two-‐phase composite of two elastic polymer materials that can be induced to express a hyperelastic behavior through topological/geometric control. Such material systems can be used in future applications to dissipate energy as a structural fuse, aid in temporary force transmission, or reinforce robust anchorage systems. Rather than a direct “mapping” or substitution of a biological materials, the intent is to study a selection of biological systems to understand the basic mechanistic principles that impart strong, robust, multi-‐purpose structural components.
Addis Kidane
A Novel 3D Full-Field Deformation Measurement at a Temperature Higher Than 1000 °C. The Objective of this project is to develop a novel high temperature optical measurement system that measures three-‐dimensional (3D) full-‐field surface deformation across a wide range of temperatures. The system will be used to investigate the thermo-‐mechanical properties of engineering materials above 1000 oC.
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Christian Linder
Design of Nanostructured Electrode Materials in Microfluidic Microbial Fuel Cells. The overall goal of this research is to develop an experimentally assisted computational framework for the design of nanostructured composite electrode materials in microfluidic microbial fuel cells (MFCs). The computational model will predict electrode topologies assuring co-‐laminar flow in the microfluidic channel by taking into account complexities arising from its response to external stimuli such as fluid flow, temperature, electric fields, and chemical environments. The fundamental understanding gained from these studies will guide the rational design of future micro-‐sized MFCs and will serve as platform for the introduction of new conditions and materials into macroscale MFCs.
Meredith Silberstein
Mechanochemically Active Polymers: Development and Validation of Theory. The objective of this research is to construct a set of continuum models that can be used to design mechanochemically active polymers with potential for self-‐reporting or self-‐healing functionality. These polymers are created by directly linking force-‐activated molecules, referred to as mechanophores, into the polymer chains or as crosslinkers between polymer chains. This grant is being used to setup my laboratory with the equipment to synthesize and characterize mechanophore-‐linked polymers. The experiments enabled by this equipment will be invaluable to theory formulation and validation.
Student Travel Grants and Best Paper Awards The Haythornthwaite Travel Grant Award Program for Graduate Students, sponsored by the Haythornthwaite Foundations, funded 10 proposals out of 16 submitted. The best of those 10, as judged by the EC, was the given the Best Student Paper Award by the AMD. The recipient was Sahab Babaee (Harvard University) with his paper titled “Exploiting instabilities to design 3D soft metamaterials”.
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Ken Liechti presenting the Best Student Paper Award to Sahab Babaee at the ASME-‐AMD Banquet on November 19, 2013.
NEWS FROM THE TECHNICAL COMMITTEES
The reports that follow are from some of the Chairs of the Technical Committees of the Division of Applied Mechanics. If you are interested in the activities of a particular committee, please feel free to contact the Chair. Composite Materials Committee
Chair: Ioannis Chasiotis, University of Illinois at Urbana-‐Champaign (2013-‐2015) Vice Chair: Valeria La Saponara, University of California, Davis (2013-‐2015) This year, AMD Composite Materials Committee Meeting was held on Tuesday, November 19, 2013 at the Manchester Grand Hyatt San Diego, at Parlor 667. 30 committee members were in attendance at the meeting. The symposia sponsored and co-‐sponsored by the AMD Composites Committee in IMECE 2013 were a great success. More than 10 symposia were organized with an estimated total of over 110 papers. Several symposia were co-‐sponsored with the Materials Division. A topic that was discussed during the committee meeting was the expensive student registration for IMECE 2013. The significantly increased student registration fee has prevented many students from attending the IMECE 2013.
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The Chair opened the floor for discussion of future topics and symposia to be sponsored by the AMD-‐Composites Committee. The following symposia were proposed for IMECE in 2014: 1. Polymer Nanocomposites: Simulations and Experiments, organized by Hassan Mahfuz and
Ashfaq Adban, and sponsored by AMD. 2. Materials and Metamaterials at Varying Length Scales and Frequency Ranges, organized by
Emmanuel Ayorinde and Joon Sang Lee, and sponsored by AMD. 3. Composite Materials for Renewable Energy, organized by Hassan Mahfuz, David Miller and
Govinda Saha, and sponsored by AMD. 4. Mechanics and Design of Cellular Materials, organized by Jaehyung Ju and Jongmin Shim,
and sponsored by AMD & MD. 5. Durability and Life Prediction of Advanced Materials, organized by Mohammad Kamal
Hossain, Mahbub Ahmed and Shaik Zainuddin, and sponsored by AMD & MD. 6. Green and Biocompatible Nanocomposites, organized by Mohammad Kamal Hossain and
Nazmul Islam, and sponsored by AMD. 7. Multifunctional and Nanostructured Materials: Modeling and Characterization, organized
byXin-‐Lin Gao and Jaehyung Ju, and sponsored by AMD & MD. 8. Multi-‐field Studies of Composites, organized by Anastasia Muliana, Valeria La Saponara and
Rani El-‐Hajjar, and sponsored by AMD & MD. 9. Hierarchical Nanocomposites organized by Mohammad Naraghi, Davood Askari and Kyriaki
Kalaitzidou, and sponsored by AMD & MD. 10. Processing and Performance of Nanocomposites, organized by Davood Askari, Kyriaki
Kalaitzidou and Mujibur Khan, and sponsored by AMD & MD. 11. Nanoengineered Materials for Energy Applications organized by Gobinda Saha, Mrinal Saha
and Mehran Tehrani, and sponsored by AMD & MD. 12. Effects of Defects, Damage Tolerance and Repair of Composites, organized by Naveen
Rastogi, Rani El-‐Hajjar, Gobinda Saha and Noriko Katsube, and sponsored by AMD. 13. Heterogeneous Biomaterials: Modeling and Experiments, organized by Samit Roy and Vinu
Krishnan, and sponsored by AMD & NEES. 14. Multiscale Modeling of Textile Composites, organized by Antony Waas and Chian Yen, and
sponsored by AMD & Aerospace. 15. Time-‐dependent Materials and their Composites: Experimental, Theoretical and Numerical
Studies, organized by Anastasia Muliana, Ioannis Chasiotis, Martin Lévesque and Daniel Tscharnuter, and sponsored by AMD.
Ioannis Chasiotis, Chair [email protected] Valeria La Saponara, Vice Chair [email protected] Mechanics of Soft Materials Committee Overview
Thank you to everyone who came out to San Diego for the Mechanics of Soft Materials Symposium at ASME IMECE 2013. We had 51 abstracts presented in 10 sessions, making us one of the largest tracks at IMECE.
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The following members were in attendance for the technical meeting: Alireza Amirkhizi, Shawn Chester, Guy Genin, David Henann, Sinan Keten, Christian Linder, Zishun Liu, Kevin Long, Oscar Lopez-‐Pamies, Anastasia Muliana, Toshio Nakamura, Vicky Nguyen, Pedro Ponte Castaneda, Jerry Qi, Varun Rajan, Stephan Rudykh, Chris Yakacki, Xuanhe Zhao.
Sessions proposed for the next 2014 meeting in Montreal, Canada are as follows:
Session coordinators are listed in ()
• Bioinspired Soft Materials/Biofilms (Sinan Ketan, Stephan Rudykh, Christian Linder) • Computational Multifield Problems (David Henann, Stephan Rudykh, Shawn Chester) • Damage (Shawn Chester) • Gels (Xuanhe Zhao) • Instabilities in Soft Materials and Structures (Xuanhe Zhao, Oscar Lopez-‐Pamies) • Interfacial Phenomena in Soft Matter (Oscar Lopez-‐Pamies) • Printed Soft Active Materials (Jerry Qi) • Shape-‐Memory Polymers (Jerry Qi, Vicky Nguyen) • Soft Active Materials (Xuanhe Zhao, Chris Yakacki, Koh Soo Jin Adrian) • Soft Metamaterials (Jongmin Shin) • Structure-‐Property Relationships (Kevin Long, Chris Yakacki)
Other topics discussed at the technical meeting included:
1. A call to nominate junior and senior colleagues to ASME fellows was made.
2. Combining some of the sessions with other TCs and Divisions was proposed. In particular, it was proposed to combine some sessions with the TC on Instabilities in Solids and Structures as well as with the Bioengineering Division.
3. Kevin Long was elected as the new TC editor. One area of emphasis was to create a more
semi-‐annual newsletter, keeping members up to date with news, open positions, and solicitations for awards.
Please contact one or more of the session organizers if you have any questions.
2013 Award Winners
Congratulations to Professor Thao (Vicky) Nguyen for receiving the 2013 Eshelby Mechanics Award for Young Faculty and the 2013 ASME Sia Nemat Nasser Early Career Award. The Eshelby Award, given annually to rapidly emerging junior faculty who exemplify the creative use and development of mechanics, was presented at the Applied Mechanics Division Banquet. The Sia Nemat Nasser Award, which recognizes early career research excellence in the areas of experimental, computational, and theoretical mechanics and materials by young investigators who are within 10 years after their Ph.D. degree, was presented at the Materials Division Awards Lecture.
Have Any Open Positions?
The technical committee on the mechanics of soft materials distributes an annual newsletter to its constituents; we would like to promote collaborations and opportunities within the group. If you
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have openings that you would like announced, please contact Kevin Long (Editor) so we may advertise your open position via the newsletter.
2014 Committee Leadership
Xuanhe Zhao, Chair, [email protected]
Oscar Lopez-‐Pamies, Vice Chair, [email protected]
Christopher Yakacki, Secretary, [email protected]
Kevin Long, Editor, [email protected]
Xuanhe Zhao, Chair [email protected] Elasticity Committee Chair: Hanqing Jiang The Technical Committee on Elasticity in the Applied Mechanics Division of ASME has been continuing to dynamically work as a group to promote this field through organizing sessions and symposia at national and international conferences. The Chair Hanqing Jiang and the outgoing Chair, Pradeep Sharma have discussed symposium topics and award nomination. The outgoing Chair of the Committee, Pradeep Sharma, has done an impressive job of aforementioned activities. The Chair Hanqing Jiang will continue working with the active members in this committee for the similar activities. Because of the time conflict, the committee meeting at 2013 ASME IMECE was not held. Please contact the Chair, Hanqing Jiang, for any symposium topics and award nominations. The Technical Committee is organizing two symposiums for the 2014 ASME IMECE: (1) 12-‐3 Hybridization of Materials for Functional Structures, Devices and Systems: Mechanics, Materials, and Manufacturing (2) 12-‐4 Symposium on Multiphysics Simulations and Experiments for Solids (co-‐sponsored with computational mechanics TC) The second symposium has been organized and sponsored by the Elasticity TC since the 2009 ASME IMECE. This symposium has been very successful on attracting high-‐quality papers and is one of the biggest symposia in the congress. We welcome dynamic members of the applied mechanics community to participate in the activities of the Elasticity Technical Committee. Hanqing Jiang, Chair [email protected]
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Committee on Fluid-Structure Interaction
Another good year for the Committee on Fluid-‐Structure Interaction (CFSI). We focused on the following activities: CFSI organized the following conferences, short courses, and minisymposia at international conferences:
1. Baskar Ganapathysubramanian (Iowa State University) and Yuri Bazilevs organized a minisymposium titled Computational Methods for Wind Engineering with Emphasis on Wind Energy at the 12th US National Congress on Computational Mechanics (USNCCM). It was held on July 22-‐25, 2013.
2. Alessandro Reali (U of Pavia), Yuri Bazilevs, Dave Benson (UC, San Diego), Trond Kvamsdal (NTNU), Giancarlo Sangalli (U of Pavia), Rene de Borst (U of Glasgow), and Clemens Verhoosel (TU Eindhoven) organized a minisymposium titled Isogeometric Methods: A Symposium Celebrating the 70th Birthday of Prof. T.J.R. Hughes at the 12th US National Congress on Computational Mechanics (USNCCM). It was held on July 22-‐25, 2013.
3. A US Association for Computational Mechanics (USACM) Thematic Conference on Isogeometric Methods (IGA 2014) took place in Austin, TX in January of 2014. The conference co-‐chairs were Thomas J.R. Hughes, David J. Benson, and Yuri Bazilevs.
4. Advances in Computational Fluid-‐Structure Interaction and Flow Simulation — A Conference Celebrating the 60th birthday of Tayfun Tezduyar (AFSI 2014) took place in Tokyo, Japan on March 19-‐21, 2014. The conference co-‐chairs were Kenji Takizawa and Yuri Bazilevs. Visit <http://www.tafsm.org/TET60/> for more details.
5. Yuri Bazilevs, Kenji Takizawa, and Tayfun Tezduyar gave a two-‐day short course on Computational Fluid-‐Structure Interaction on March 22-‐23, 2014 in Tokyo, Japan. The short course was offered in connection with AFSI 2014.
The following activities are planned for the future:
1. Yuri Bazilevs, Kenji Takizawa, and Tayfun Tezduyar are scheduled to give a two-‐day short course on Computational Fluid-‐Structure Interaction on July 19-‐20, 2014 in Barcelona, Spain. The short course will be offered in connection with the World Congress on Computational Mechanics (WCCM 2014). For more details, visit <http://www.tafsm.org/BarcFSI2014/>.
2. Three minisymposia are scheduled, Biomedical Fluid Mechanics and FSI, Flows With Moving Boundaries and Interfaces, and Fluid-‐Structure Interaction, at the 18th International Conference on Finite Elements in Flow Problems (FEF 2015) in Taipei, Taiwan on March 16-‐18, 2015. Organizers are Kenji Takizawa, Yuri Bazilevs, and Tayfun Tezduyar.
3. Yuri Bazilevs, Kenji Takizawa, and Tayfun Tezduyar are scheduled to give a two-‐day short course on Computational Fluid-‐Structure Interaction in Taipei, Taiwan. The short course will be offered in connection with FEF 2015.
4. Advances in Computational Fluid-‐Structure Interaction and Flow Simulation — A Conference on New Methods and Challenging Computations (AFSI 2015) will take place in Istanbul, Turkey on May 11-‐13, 2015. The conference co-‐chairs are Tayfun Tezduyar, Kenji Takizawa, and Yuri Bazilevs. For more information, visit <http://www.tafsm.org/AFSI2015/>.
5. Yuri Bazilevs, Kenji Takizawa, and Tayfun Tezduyar are scheduled to give a two-‐day short course on Computational Fluid-‐Structure Interaction in Istanbul on May 9-‐10, 2015. The short course will be offered in connection with AFSI 2015. Visit <http://www.tafsm.org/IstFSI2015/>.
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Kenji Takizawa, Chair [email protected] Ming-Chen Hsu, Vice-Chair [email protected] Experimental Mechanics Committee The Experimental Mechanics (EM) Technical Committee (TC) met on November 18, 2013 from 10am to 11am in Parlor 482 at the Manchester Grand Hyatt San Diego. The meeting was attended by Frank DelRio (National Institute of Standard and Technology), Rani El-‐Hajjar (University of Wisconsin-‐Milwaukee), Xinran (Sharon) Xiao (Michigan State University), and Waiel Ashmawi (The Boeing Company). The meeting started with a review and approval of the 2012 IMECE meeting minutes, followed by an invitation from Xiao to attend the 17th U.S. National Congress on Theoretical and Applied Mechanics, June 15-‐20, 2014 at Michigan State University in East Lansing, Michigan. The committee then discussed the EM-‐sponsored symposia at the 2013 IMECE meeting and proposed new symposia for the 2014 IMECE meeting. In 2013, the EM TC sponsored the following five symposia:
a) Nanocomposites Synthesis and Performance (co-‐sponsored by Composites and Heterogeneous Materials TC; co-‐organized by Hassan Mahfuz, Davood Askari, and Kyriaki Kalaitzidou; 1 session)
b) Effects of Defects, Damage Tolerance and Repair of Composites (co-‐sponsored by Composite Materals TC; co-‐organized by Rani Elhajjar, Naveen Rastogi, Gobinda C. Saha, and Waeil Ashmawi; 1 session)
c) Mechanics of Adhesion and Friction (co-‐sponsored by Multifunctional Materials TC and Nanotribology and Micro/Nano-‐Systems TC; co-‐organized by Jianliang Xiao, Frank DelRio, and Yong Zhu; 4 sessions)
d) Symposium on Applications and Challenges in Full-Field Experimental Methods (co-‐organized by Rani Elhajjar, Matt Crompton, and Michael Mello; 1 session)
e) Modeling and Experiments in Nanomechanics and Nanomaterials (co-‐organized by Yozo Mikata and Jeffrey Kysar; 3 sessions)
In 2014, the EM TC is sponsoring the following four symposia:
a) Mechanics of Adhesion and Friction (co-‐organized by Jianliang Xiao, Frank DelRio, and Yong Zhu; 3 sessions)
b) Multi-Field Studies in Heterogeneous Materials: Experimental, Theoretical and Numerical Approaches (co-‐organized by Rani Elhajjar, Valeria La Saponara, Anastasia Muliana, Wahyu Lestari, and Arun Srinivasa; 2 sessions)
c) Effects of Defects, Certification and Repair of Composites (co-‐organized by Rani Elhajjar, Naveen Rastogi, Gobinda C. Saha, and Waeil Ashmawi; 1 session)
d) Modeling and Experiments in Nanomechanics and Nanomaterials (co-‐organized by Yozo Mikata and Jeffrey Kysar; 4 sessions)
At the 2013 IMECE meeting, the TC also discussed potential student paper and poster competitions for future meetings. The discussion focused on similar competitions at other conferences and a
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possible special issue for EM in an ASME journal. The TC finally discussed the fact that Frank DelRio’s term as chair will come to an end after this meeting, and as a result, that Rani Elhajjar will become the new chair and that an election for a new secretary will have to take place at the 2014 IMECE meeting. The EM TC leadership and members are excited about the current state of the TC and its role in AMD and look forward to an exciting 2014 IMECE meeting in Montreal, Canada! Frank DelRio, Chair [email protected] Rani El-hajjar, Secretary [email protected]
NEWS FROM THE ASME-AMD JOURNALS Journal of Applied Mechanics JAM publishes very fast. It received 526 submitted manuscripts in 2013. Among them two are still in review. The average time for the first round of reviews, with the decision to accept, reject, or revise, is 18 days. After the first round of reviews, the average time to make the final decision is 34 days, which includes both the authors' revision time and second (or more) round(s) of review. After acceptance the unedited manuscript appears online with the assigned DOI within 48 hours. Yonggang Huang Editor, Journal of Applied Mechanics Applied Mechanics Reviews
Through a series of targeted and strategic initiatives, collaborations, and innovations in format, content, and structure, Applied Mechanics Reviews (AMR) is continuing to emphasize core values of relevance and accessibility to journal readers and contributors. The journal is striking a balance between immediate dissemination and archival repository, placing an emphasis on AMR as a venue in service of the community of readers and contributors for the entire panoply of ASME Technical Journals. In 2014, Applied Mechanics Reviews and the ASME Digital Collection
launched the AMR Podcast series, including audio interviews with Howard Stone, David Barnett, Avram Bar-‐Cohen, Markus Buehler, and Joe Goddard on topics ranging from a professional career in science and academia to personal reflections on research funding, scientific dissemination, and the contributions of applied mechanics to engineering technology. Podcast interviews are posted monthly to http://appliedmechanicsreviews.asmedigitalcollection.asme.org/podcasts.aspx, with future releases including interviews with Anthony Bloch, Stuart Antman, Irene Beyerlein, Karl-‐Johan Åström, Katia Bertoldi, Igor Mezic, Thomas Hughes, and Philip Holmes. In 2014, the Applied Mechanics Division will award the inaugural Lloyd Hamilton Donnell Applied
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Mechanics Reviews Paper Award. Applied Mechanics Reviews was founded in 1948 under the editorship of Lloyd Hamilton Donnell (1895-‐1997), who went on to earn the ASME Wooster Reed Warned Medal in 1960, the von Kármán Medal in Engineering mechanics from the ASCE in 1968, and the 1969 ASME Medal. The $1,000 award, to be announced at the 2014 IMECE, provides recognition of outstanding contributions to the applied mechanics archival literature and pays tribute to the vision and commitment of service that led to the founding of the journal. The January and July 2014 issues of Applied Mechanics Reviews include collections of technical review articles developed in collaboration with the ASME Journals of Pressure Vessel Technology (JPVT) and Vibration and Acoustics (JVA), respectively. In each case, several contributions are published together with independent commentary and author responses. A similar collaboration is the September 2014 issue featuring review articles by Society of Engineering Science medalists and Midwest Mechanics Seminar Series speakers. A series of tutorial articles, developed from lecture notes from a Nordic Institute of Theoretical Physics summer school on advanced instability methods for complex flows and including source code for computer exercises, appeared in the March 2014 issue, co-‐edited with Dan Henningson and Ardeshir Hanifi. Applied Mechanics Reviews welcomes collaboration in service of the applied mechanics community and continued engagement with its contributors and readers in maintaining high standards of significance, quality and impact. Harry Dankowicz Editor, Applied Mechanics Reviews
OTHER AWARDS The Journal of Applied Mechanics Award The Journal of Applied Mechanics Award is provided by the Applied Mechanics Division of the American Society of Mechanical Engineers to honor the best paper, which has been published in the Journal of Applied Mechanics during the two calendar years immediately preceding the year of the award. The award will be made annually to the corresponding author of the paper who received their Ph.D. no more than 10 years prior to July 1 of the year of award. Corresponding authors who have yet to receive a Ph.D. may also be considered. The award will be presented at the AMD Banquet at the IMECE meeting. The award is selected by a committee appointed by the Technical Editor of JAM, with the Vice Chair of AMD Executive Committee as the committee chair. Markus Buehler from MIT will receive the 2014 JAM Award for his paper "Bioinspired graphene nanogut" (Journal of Applied Mechanics, v 80, article 061009, 2013). Katia Bertoldi from Harvard University and Oscar Lopez-Pamies from University of Illinois will also receive the 2014 JAM Award for their paper "Some remarks on the effect of interphases on the mechanical response and stability of fiber-‐reinforced elastomers" (Journal of Applied Mechanics, v 79, article 031023, 2012). Eshelby Mechanics Award for Young Faculty The Eshelby Mechanics Award for Young Faculty was established in 2012. This award is given annually to rapidly emerging junior faculty (below the age of 40) exemplifying the creative use and development of mechanics. The intent of the award is to promote the field of mechanics, especially among young researchers. While interdisciplinary work that bridges mechanics with physics,
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chemistry, biology and other disciplines is encouraged, the ideal awardee must demonstrate clear inspiration from mechanics in his/her research. The award, although unaffiliated with any society, is created by the members of the mechanics community and is conferred by an independent committee consisting of distinguished mechanicians. The award consists of $ 1500 cash and a commemorative plaque. The recipients are honored at the ASME Applied Mechanics Banquet. The recipient of the 2013 award is Professor Liping Liu (Rutgers University) who will be honored at IMECE 2014 in Montreal. The selection committee consisted of: K. Ravi-Chandar (UT Austin), Huajian Gao (Brown University), Kaushik Bhattacharya (Caltech), Roger Fosdick (University of Minnessota), and Yonggang Huang (Northwestern University)
OTHER NEWS
William Prager Chair and New Center Established at UC, San Diego The William Prager Endowed Chair was established in the Department of Structural Engineering at the University of California, San Diego. The inaugural holder of the Prager Chair is Professor Jiun-Shyan (J.-S.) Chen. J.-‐S. Chen (also the 2013 ASME Fellow, nominated by the TC on Fluid-‐Structure Interaction) joined the Structural Engineering Department at UC, San Diego in January 2014. Prior to joining UC, San Diego, J.-‐S. Chen was a Professor in the Department of Civil Engineering at UC, Los Angeles. Together with Associate Directors Professors Gil Hegemier and Yuri Bazilevs, J.-‐S. Chen will lead a newly established Center for Extreme Events Research (CEER). The center’s missions are to provide damage assessment of infrastructure and bio-‐systems subjected to extreme events for effective protection and vulnerability reduction, and to provide estimation of damage and vulnerability after extreme events for disaster mitigation and recovery.
Prof. J.-‐S. Chen, UCSD, the inaugural holder of the William Prager Endowed Chair and Director of the newly established Center for Extreme Events Research (CEER) in the Department of Structural Engineering at UC, San Diego.