Cross-Section Optimization for Axial and Bending Crushes Using Dual Phase Steels

Guofei Chen; Ming F. Shi; Tau Tyan

doi:10.4271/2008-01-1125

2008-04-14

Cross-Section Optimization for Axial and Bending Crushes Using Dual Phase Steels 2008-01-1125

To achieve optimal axial and bending crush performance using dual phase steels for components designed for crash energy absorption and/or intrusion resistance applications, the cross sections of the components need to be optimized. In this study, Altair HyperMorph™ and HyperStudy^® optimization software were used in defining the shape design variables and the optimization problem setup, and non-linear finite element code LS-DYNA^® software was used in crush simulations. Correlated crash simulation models were utilized and the square cross-section was selected as the baseline. The optimized cross-sections for bending and axial crush performance resulted in significant mass and cost savings, particularly with the application of dual phase steels.

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Cross-Section Optimization for Axial and Bending Crushes Using Dual Phase Steels 2008-01-1125

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