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Numerical Evaluation of Crashworthiness of Automotive Sheets

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Abstract:

Crash simulations were performed for automotive sheets. To understand the influence of crystal structures in sheet materials on crashworthiness, the effect of the yield function shape was studied by adopting the recently developed non-quadratic anisotropic yield surface, Yld2004-18p. The effect of the back-stress was also investigated by comparing simulation results obtained for the isotropic, kinematic and combined isotropic-kinematic hardening laws based on the modified Chaboche model. In addition, the effects of anisotropy and sheet thickness on crashworthiness were evaluated.

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Periodical:

Key Engineering Materials (Volumes 345-346)

Pages:

1537-1540

DOI:

https://doi.org/10.4028/www.scientific.net/KEM.345-346.1537

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Online since:

August 2007

Authors:

Han Sun Ryou, Myoung Gyu Lee, Chong Min Kim, Kwan Soo Chung

Keywords:

Combined Isotropic-Kinematic Hardening, Constitutive Law, Crashworthiness, Non Quadratic Anisotropic Yield Functions

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© 2007 Trans Tech Publications Ltd. All Rights Reserved

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