Meta-Models application on bumper crash design optimization developed with modeFRONTIER

G. Bucilli, R. Wohlgethan (Enginsoft)

CHALLENGE - Bumpers design represent one of the key elements defining car safety performances. In the application presented, the bumper has been optimized for a frontal crash situation. During the analysis six parameters were used in order to improve the bumper configuration by reducing its mass and minimizing force on the Crash-Boxes. The optimization study starts with a three-step simulation process going from the geometry definition to the simulation of physical behavior.








SOLUTION - The optimization process was implemented through CATIA, Hypermesh and LS-Dyna all combined in the modeFRONTIER's workflow which permitted to save computational time. Moreover, by creating first a metamodel, it enabled to share and reuse the dynamic model, creating a database for future customers' requests. 

BENEFITS - Some of the major advantages of modeFRONTIER highlighted in this presentation are to be found in its capability to:

  • automatically manage file transfer and queuing and dynamically leverage all available hardware resources in a cluster 

  • make the integration task more efficient thanks to the direct integration node with CATIA that without any scripting effort automatically reads CATIA parameters, connects the optimization flow to the CAD model parameters, performs user defined actions / sequences through Macros and exports the modified model into specific output format

  • performs the RSM training in one step only and automatically spots the best fitting technique returning a ranking