Isogeometric Method for Optimal Design of Shell Structures
Transcript of Isogeometric Method for Optimal Design of Shell Structures
Isogeometric Method for Optimal Design ofShell StructuresA Novative and Effective ApproachSarah Julisson
Optimal Shape Design: state of the art & today’s challenges
The standard process Shell structures
Parameterizedshape (CAD)
Mesh
FEAOptimizer
Optimal solution
NOKOK
Standard method indesign departments
Setting-up difficultiesReturn to CADSurface parametersMesh quality
Need expertise
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Novative approach: Isogeometric method
Main objectivesMaximize the design space explorationSimplify the optimization processImprove simulations quality
Standard approach:CAD / Meshing software / Solver / Optimizer
Parameterizedshape (CAD)
Mesh
FEAOptimizer
Optimal solution
NOKOK
Isogeometric approach:both integrated and innovative
Parameterized shape
Update mechanicalequations
Isogeometric analysis
Optimizer(Gradient based)
Optimal solution
NOKOK
[de Nazelle et al. 2012] Renault / ECL[Heinrich et al. 2011] Inria
[Reali et al. 2007] University of Pavia[Hughes et al. 2005] University of Texas at Austin
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First Applications
Optimization criteria
MassStiffness
Vibro-acousticFatigue
BucklingMaterial optimization (eg. composite)
Standard materials: Thermal screen Composite materials: Suspension wishbone
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