High Performance Engine Analysis using HyperWorks and PERMAS 08.11.2011 INTES GmbH, Schulze-Delitzsch-Str. 16, D-70565 Stuttgart www.intes.de 1 Michael Klein, INTES GmbH High Performance Engine Analysis Our guideline: • High performance for industrial usage • High performance for every day usage • No extra effort to use high performance Required for high performance engine analysis: AGENDA/CONTENTS Company – background in high performance computing Required for high performance engine analysis: • Preprocessor interface with support of all features • High accuracy: only with more precise modeling and correct simplifications the benefit from finer meshes is a more accurate result • High performance features that result in shorter run times for a wide range of analysis • Efficiency in postprocessing INTES GmbH, Schulze-Delitzsch-Str. 16, D-70565 Stuttgart www.intes.de 2 HyperMesh-PERMAS interface Bolt pretension Process modeling/loadhistory Contact New gasket-element solver PERMAS-HyperView interface Conclusion 08.11.2011
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High Performance Engine Analysis using HyperWorks and PERMAS
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High Performance Engine Analysis using HyperWorks and PERMAS
� Bolt pretension Process modeling/loadhistoryContact
� New gasket-element solver
� PERMAS-HyperView interface� Conclusion
08.11.2011
Company
INTES• Privately held and independent Finite Element(FE) Technology company
• Founded in 1984 as spin-off of Stuttgart University• Offering own FE analysis software PERMAS,software development, and engineering services
• Based on long-term experience in thedevelopment of numerical FE methods
PERMAS FEA Software
Thermo-mechanical analysis:• Linear and non-linear static analysis• Contact analysis• Linear and non-linear heat transfer (steady-state and transient)
Vibroacoustic analysis:• Dynamic analysis (in time and frequency domain)• Fluid-structure acoustics• Spectral and random response analysis
Interfaces:• HyperMesh-PERMAS Interface since 2005 (developed by Altair)• PERMAS-HyperView Interface since 2005 (developed by INTES)• PERMAS-MotionSolve Interface (developed by INTES) 3
• High performance− Large models− Fast solvers− Parallelization
• Special algorithms− Contact Analysis− Gasket Analysis− Eigenvalues with MLDR− Fluid-structure coupling
• Productivity tools− Automatic part coupling and
incompatible meshes− Substructuring and submodelling− Direct interfaces
PERMAS FEA SoftwareGeneral purpose software to perform complex FE calculations in engineering
(transient) heat transfer analysis (result transfer)
contact analysis
nonlinear load history
integration analysis (static with subsequent dynamic analysis)
static analysis
Bolt Pretension
For bolt pretension a simplification in modeling is required, because bolt with all details like the thread raises analysis duration drastically.Simplification should always represent the mechanical behavior simpler, but correct.Example: classical and widely used pretension based on a surface inside the bolt.
Advantages:� Simple input� Exact definition of pretension force
Disadvantages:� Shortening of bolt in simulation instead of elongation in reality� Wrong direction of radial forces in thread area (radial tear instead of radial spreading)
08.11.2011
Bolt Pretension Applied to Thread
New method with bolt pretension applied to thread area.
Advantages:� Simple input� Exact definition of pretension force� Pretension in thread area
PAXVILLE, 4 x Xeon MP Dual Core with 3,4 GHz, 26.000 MB memory, parallelization
2.578.885 nodes1.476.012 elements (tet10, penta6, penta15,
hexe8, hexe20, tria3, quad4, x2stiff3)
2.044 gasket elements2.751 multipoint constraints
7.669.010 dofs21.762 ca dofs
0
10
20
30
3.27
68.3
old137 GB
1.80
PERMASdisc space
0
0,5
1
7 steps : pretension, thermal load,firing with different pressure levels
new87 G
1.8
new CONTACT+CASO88 GB disc space
new GSKSOLV=CONTACT
87 GB disc space
new+CASO88 GB
GSKSOLV=
08.11.2011
Postprocessing - HyperView
Direct binary interface from PERMAS to HyperView• PERMAS writes H3D• No file conversion required• Fast read in• Smallest possible file size• All PERMAS results available
• High performance engine analysis is useful:– if you can use it in your every day work and– if you have tools for all steps of the process that support high
performance analysis.
• HyperWorks and PERMAS together support all steps of high performance engine analysis.