current activities at the must-sim facility neeshub site visit to uiuc july 23, 2010
DESCRIPTION
Current Activities at the MUST-SIM Facility NEEShub Site Visit to UIUC July 23, 2010 Dan Kuchma, Greg Pluta, Thomas Frankie, and Aditya Bhagath Illinois NEES Facility Department of Civil and Environmental Engineering University of Illinois. Content of Presentation. CABER Project - PowerPoint PPT PresentationTRANSCRIPT
Current Activities at the MUST-SIM Facility
NEEShub Site Visit to UIUC
July 23, 2010
Dan Kuchma, Greg Pluta,
Thomas Frankie, and Aditya Bhagath
Illinois NEES Facility
Department of Civil and Environmental Engineering
University of Illinois
Content of Presentation
CABER Project– 3-Pier Simulation– Test Structure– Hybrid Testing
EOT Efforts– Shear-Torsion Interaction– Data-Rich Video Production– Access Portal
Limitations of Hybrid Simulation
Only relatively simple systems to date– Structures and earthquakes are 3D
Loading is generally simplified– True actions are complex 6DOF load and boundary
conditions
Earthquake Excitation
gx
Simple Bridge Model
27.215 m 23.700 m 32.260 m 30.795 m
6.085 m6.575 m 6.085 m
Courtesy of National Taiwan University
NEES CABER Project
Curved Bridge with 3 Piers– 2 Large Scale Piers– 1 Small Scale Pier
Considerations– Curved/skewed– Uneven spans/heights– Soil/foundation interaction– Multi-directional motions
gx gx
Details of Structure
To be tested using
LARGE scale LBCBs
To be tested using
LARGE scale LBCBs
To be tested using
SMALL scale LBCBs
28.5
ft
37.5
ft
22.5
ft
Abut 1 Abut 2
75 ft
100 ft
Bent 1
Bent 2
Bent 3
75 ft
150 ft
75 ft
R = 660ftBox Girder section
Cap beam section
Data Acquisition
Traditional – 244 Channels– 152 Strain Gages– 56 Linear Potentiometers– 24 String Potentiometers– 12 LVDTs
Krypton– 50 LEDS
Cameras– 5 High Resolution Still Cameras– 1 High Resolution Video Camera– 1 Telepresence Camera
Control Instrumentation
Specimen Fabrication
Small Scale Specimen Validation
Finite Element Analysis
Z
Y
X
Z
Y
X
ZY
X
Loading on Structure
Sequence of Imposed Records– Level 1 (cracking)– Level 2 (yielding)– Level 3 (design level)– Level 4 (failure)
0 1 2 3 4 5P erio d (sec )
0
0 .5
1
1 .5
2
2 .5
3
Spe
ctra
l Acc
eler
atio
n (i
n)
0 1 0 2 0 3 0 4 0T im e (sec )
-1
-0 .5
0
0 .5
1
Acc
eler
atio
n (g
)
Hybrid Simulation
Computational component
{u}{u}
{F}{F}
Measure forces
gxSimulation Coordinator
Experimental component
FzFzMyMy
MyMyFyFy
FxFxMxMx
Target Disp.
Measured
forces
Calc Forces
EOT Efforts
Creation of Modular Videos Shear-Torsion Interaction selected as test case Portal to Access Videos, Data, and Activities Education Outreach and Training
– K-12– Freshmen Level– Senior/Grad Level– Researchers– Practitioners
Experimental Test Case
Tests on 5 small piers
Test No.
Shear Component
(%)
Torsional Component
(%)
1 100 0
2 75 25
3 50 50
4 25 75
5 0 100
Experimental Results
Displaying Response
Interaction Effects
Video Production Sequence
Script written over several iterations– Detailed subsections– Detailed directions for video editing
Visual components– Test videos created in Matlab– Powerpoint images and animations– CAD drawings– Internet images
Review and voice over by professional speaker Video created in Adobe Premiere in 1080p
Steps
Video Production Sequence
Matlab-Generated Video
Video Production Sequence
Video Created in Adobe Premiere
Online Portal
Potential Framework
NEES researchers create first draft of video scripts and images, animations, and clips and then submit to NEEScomm for review and comments
NEEScomm arranges for voice over and produces videos
Learning modules formed from videos and test data Videos, metadata, and activities are provided in the
Portal format
Next Steps
Continue iterations to refine current video; produce video components for reaching a variety of audiences
Create teaching module(s) with video segments and access to structural details and test data
Revise and update interface of Portal Explore frameworks for creating videos/modules: Listen and respond to feedback
Closure
"In the examination of physical problems I begin by making a few experiments, because it is my desire to state the problem after I have had the experience of it . . . we must commence with experience, and strive by means of it to discover truth.“
Leonardo da Vinci 1452 – 1519
Questions?