suc brasil 2012 : importing models to sesam genie
DESCRIPTION
Presented at SUC by Ole Jan Nekstad from DNV, about houw to import finite element of CAD data to Sesam GeniETRANSCRIPT
Ole Jan NekstadProduct Director - Sesam
3 December 2012
SesamTM
40 years of success
Importing FE/CAD data to Sesam GeniE
© Det Norske Veritas AS. All rights reserved.
Convert model to Sesam GeniE format
3 December 2012
Why change to Sesam – What’s in it for the customer
• Transaparency and sustainability
• Regulatory requirements
• Standards compliance
2
ReduceCost
Return on Asset
ManagedRisk
Business Value
• Optimised performance
• Reduced downtime
• Extended lifetime
• Design and engineering efficiency
• Lower building cost
• Lower operational cost
© Det Norske Veritas AS. All rights reserved.
Convert model to Sesam GeniE format
3 December 2012
3
Which purposes can a model serve when imported into Sesam?
© Det Norske Veritas AS. All rights reserved.
Convert model to Sesam GeniE format
3 December 2012
Our tools – your solutions – your decisions
4
In-place analysis (wave, pile-soil)Deflections, stresses, code-check, fatigue, earthquake
Transportation, liftingDeflections, stresses, code-check, fatigue
Transportation, launchingDeflections, stresses, code-check, fatigue
Non-linear analysis,collapse, accidents,re-qualifications, life extensions
Data import
© Det Norske Veritas AS. All rights reserved.
Convert model to Sesam GeniE format
3 December 2012
Re-use structural analysis model during life time
5
Sesam Synergi Structure
SacsSTAAD.ProANSYSRhinoDXF
Sesam for
� Design
� Modification
� Life extension
Synergi Structure for
� Inspection planning, execution and follow up
� Condition monitoring
� Trending
© Det Norske Veritas AS. All rights reserved.
Convert model to Sesam GeniE format
3 December 2012
Import to Sesam GeniE - data formats supported
� Finite element data (CAE)- FEM format- Sacs format- StruCad3D- StaadPro- Ansys
� CAD data (lines)- DXF- Rhino- SAT- PDMS (sdnf)- PDS (sdnf)
� CAD data (surfaces)- SAT- Rhino (prototype)- S3D (prototype)
6
© Det Norske Veritas AS. All rights reserved.
Convert model to Sesam GeniE format
3 December 2012
7
Importing old Sesam format- Structure- Loads- Wave load conditions- Soil data
© Det Norske Veritas AS. All rights reserved.
Convert model to Sesam GeniE format
3 December 2012
Importing old Sesam format to GeniE
� Primarily for converting re-analysis models of jackets, in some cases import of surface models- Preframe, Prefem, Patran-Pre
� For frame and plate structures- Basically all structure, sections and materials. The
numbering system for beams may be maintained- Manually defined loads such as point, line, pressure,
acceleration loads- Wave load data such as hydrodynamic properties,
current, wave and load conditions- Soil data
8
© Det Norske Veritas AS. All rights reserved.
Convert model to Sesam GeniE format
3 December 2012
9
Importing Sacs format- Structure- Loads- Wave load conditions- Load combinations- Pile- Soil
© Det Norske Veritas AS. All rights reserved.
Convert model to Sesam GeniE format
3 December 2012
Importing a Sacs model into Sesam GeniE
� The procedure today- Import structure, sections, materials (automatic)- Import wishbone connections (automatic)- Import wave load data (automatic)- Import load combinations (automatic)- Import pile data (automatic)- Import soil data (automatic)- Add blanket and equipment loads
� Once the model has been imported and verified it can be used for all types of analyses in Sesam
10
© Det Norske Veritas AS. All rights reserved.
Convert model to Sesam GeniE format
3 December 2012
What are we developing wrt. Sacs import
� Import of tapered elements – Q3/2013- Will be converted to segmented members- Today – converted to smallest section
� Import of blanket loads – Q3/2013- Equipments and footprints in Sesam GeniE to be used- Today manual conversion of data – an easy task
� Import of equipments – Q3/2013- Equipments and footprints in Sesam GeniE to be used- Today manual conversion of data – an easy task
� Import of wind load data – Q3/2013- Beams and equipments
14
© Det Norske Veritas AS. All rights reserved.
Convert model to Sesam GeniE format
3 December 2012
Demo - 2
� Importing a module- 300 load combinations
� All data is imported and no manual work is needed
16
© Det Norske Veritas AS. All rights reserved.
Convert model to Sesam GeniE format
3 December 2012
Demo - 5
� A jacket where piles and soil are imported
19
© Det Norske Veritas AS. All rights reserved.
Convert model to Sesam GeniE format
3 December 2012
20
Importing StruCad format- Structure- Loads
© Det Norske Veritas AS. All rights reserved.
Convert model to Sesam GeniE format
3 December 2012
Importing StruCad data
� Capabilities structure, sections, materials and manually defined loads- Includes beams and plates
� Limitations- Load combinations- Hydrodynamic properties and wave loads- Pile and soil data
21
© Det Norske Veritas AS. All rights reserved.
Convert model to Sesam GeniE format
3 December 2012
24
Importing StaadPro format- Structure- Loads
© Det Norske Veritas AS. All rights reserved.
Convert model to Sesam GeniE format
3 December 2012
Importing StaadPro data
� Capabilities structure and manually defined loads and load combinations- Includes beams, plates, eccentricities,
boundary conditions
� Limitations- Sections not defined in StaadPro (reference
to database)- A separate utility tool creating a GeniE js-file
25
© Det Norske Veritas AS. All rights reserved.
Convert model to Sesam GeniE format
3 December 2012
A typical example
� A small topside- All converted and analysis can be run at once- 78 basic load cases, 73 load combinations
26
© Det Norske Veritas AS. All rights reserved.
Convert model to Sesam GeniE format
3 December 2012
28
Importing Ansys format- Structure- Loads
© Det Norske Veritas AS. All rights reserved.
Convert model to Sesam GeniE format
3 December 2012
Importing Ansys data
� The Ansys file is converted to a FEM file for import to GeniE- Structure, sections, materials and manually defined
loads
� Limitations- Linear dependencies and second order elements- Surface and line loads on shells. Temperature
loads
29
© Det Norske Veritas AS. All rights reserved.
Convert model to Sesam GeniE format
3 December 2012
Example
� Midship frame
30
© Det Norske Veritas AS. All rights reserved.
Convert model to Sesam GeniE format
3 December 2012
31
Import lines from CAD- DXF- Rhino- SAT- PDMS (sdnf)- PDS (sdnf)
© Det Norske Veritas AS. All rights reserved.
Convert model to Sesam GeniE format
3 December 2012
Import DXF
� Points, lines and poly-lines
© Det Norske Veritas AS. All rights reserved.
Convert model to Sesam GeniE format
3 December 2012
Import DXF – a typical barge
� Poly-lines used in skinning
33
© Det Norske Veritas AS. All rights reserved.
Convert model to Sesam GeniE format
3 December 2012
Import DXF – a typical FPSO
� Curves form the basis of surface generations – cover, skinning, curve-net interpolation
34
© Det Norske Veritas AS. All rights reserved.
Convert model to Sesam GeniE format
3 December 2012
Import from Rhino
� Requires that customer has Rhino and installs a plug-in Rhino4ToGeniE.rhp developed by us
© Det Norske Veritas AS. All rights reserved.
Convert model to Sesam GeniE format
3 December 2012
Import from Rhino
� The plug-in will produce a js-file for import to GeniE
© Det Norske Veritas AS. All rights reserved.
Convert model to Sesam GeniE format
3 December 2012
Import lines from Rhino
� Example of importing selected lines from Rhino
37
© Det Norske Veritas AS. All rights reserved.
Convert model to Sesam GeniE format
3 December 2012
Import lines from Rhino
� A real case example- The lines are exported from Rhino and surfaces are made by cover, flat-region, skinning and
curve-net interpolation- There are few surfaces leading to a model that is applicable for establishing both a panel
model and a structural analysis model
38
Rhino model
© Det Norske Veritas AS. All rights reserved.
Convert model to Sesam GeniE format
3 December 2012
Import lines from Rhino
� Details of the hull
39
Rhino model GeniE lines
GeniE mesh GeniE surface
© Det Norske Veritas AS. All rights reserved.
Convert model to Sesam GeniE format
3 December 2012
Import lines from Rhino
� Details of interior
40
Rhino model
GeniE mesh
GeniE lines
GeniE surface
© Det Norske Veritas AS. All rights reserved.
Convert model to Sesam GeniE format
3 December 2012
Some remarks on DXF and Rhino
� Early versions of DXF; lines and circles only – these lines need to be approximated with splines before making the surfaces
� Newer versions of DXF and Rhino use splines and NURBS – surface generation can be done on these
41
Example of many small lines approximated with splines
© Det Norske Veritas AS. All rights reserved.
Convert model to Sesam GeniE format
3 December 2012
The importance of having as few surfaces as possible
� Better user control of the mesh- Coarse element density, global strength analysis and panel modelling- Fine mesh density, detailed strength analysis
42
Coarse mesh Fine mesh
© Det Norske Veritas AS. All rights reserved.
Convert model to Sesam GeniE format
3 December 2012
Export lines to Rhino
� On-going development
43
© Det Norske Veritas AS. All rights reserved.
Convert model to Sesam GeniE format
3 December 2012
44
Import surfaces from CAD- SAT- Rhino – prototype- S3D – prototype
© Det Norske Veritas AS. All rights reserved.
Convert model to Sesam GeniE format
3 December 2012
Surfaces from SAT
� A surface made in a CAD system supporting the SAT format- Several surfaces removed for visibility
45
Label free edges
© Det Norske Veritas AS. All rights reserved.
Convert model to Sesam GeniE format
3 December 2012
Surfaces from Rhino – example 1
� A surface made in Rhino
47
© Det Norske Veritas AS. All rights reserved.
Convert model to Sesam GeniE format
3 December 2012
Surfaces from Rhino – example 1
� Imported to Sesam GeniE
48
© Det Norske Veritas AS. All rights reserved.
Convert model to Sesam GeniE format
3 December 2012
Surfaces from Rhino – example 2
� Another surface made in Rhino
49
© Det Norske Veritas AS. All rights reserved.
Convert model to Sesam GeniE format
3 December 2012
Surfaces from Rhino – example 2
� Imported to Sesam GeniE
50
© Det Norske Veritas AS. All rights reserved.
Convert model to Sesam GeniE format
3 December 2012
Surfaces to Rhino – example 3
� Curves created in Rhino
51
© Det Norske Veritas AS. All rights reserved.
Convert model to Sesam GeniE format
3 December 2012
Surfaces to Rhino – example 3
� Curves imported to Sesam GeniE
52
© Det Norske Veritas AS. All rights reserved.
Convert model to Sesam GeniE format
3 December 2012
Surfaces to Rhino – example 3
� Surfaces made in Sesam GeniE
53
© Det Norske Veritas AS. All rights reserved.
Convert model to Sesam GeniE format
3 December 2012
Surfaces to Rhino – example 3
� Surfaces exported from Sesam GeniE to Rhino- The hull is now mirrored as compared to the starting position in Rhino
54
© Det Norske Veritas AS. All rights reserved.
Convert model to Sesam GeniE format
3 December 2012
Model data from S3D
� Intergraph is making a prototype converter supporting the Sesam GeniE XML format- Better than pure geometry data transfer- Material, thickness, section properties part of the data conversion
55
S3D
© Det Norske Veritas AS. All rights reserved.
Convert model to Sesam GeniE format
3 December 2012
56
To summarize
© Det Norske Veritas AS. All rights reserved.
Convert model to Sesam GeniE format
3 December 2012
Import to Sesam GeniE - data formats supported
� Finite element data (CAE)- FEM format- Sacs format- StruCad3D- StaadPro- Ansys
� CAD data (lines)- DXF- Rhino- SAT- PDMS (sdnf)- PDS (sdnf)
� CAD data (surfaces)- SAT- Rhino (prototype)
57
© Det Norske Veritas AS. All rights reserved.
Convert model to Sesam GeniE format
3 December 2012
Crossing the bridge to Sesam
58
© Det Norske Veritas AS. All rights reserved.
Convert model to Sesam GeniE format
3 December 2012
Crossing the bridge gives access to a complete system
59
© Det Norske Veritas AS. All rights reserved.
Convert model to Sesam GeniE format
3 December 2012
Crossing the bridge to Sesam GeniE
� There are operators that are migrating their data to Sesam- A leading operator world wide has 200+ models to be converted
� Pilot projects with other leading operators on data migration- In total these have more than 500 data models to be converted
� A streamline conversion process will lead to economic gains for the operators- Quality of data transfer, support, assistance, software
functionality, long term commitments from DNVS
61
© Det Norske Veritas AS. All rights reserved.
Convert model to Sesam GeniE format
3 December 2012
62
Safeguarding life, property and the environment
www.dnv.com