The objective of this study is to develop a more precise springback prediction technique by means of finite elements method for the optimization of forming process design. The approach includes a new material modeling method to calculate accurate residual stresses inherent in forming processes, and a new analytical method to calculate springback shape by releasing residual stresses in a sequence of releasing steps.This paper proposed the new analytical method in springback simulation for actual automotive components with complex shapes. A new algorism, Multi-Step-Springback method was developed to improve the accuracy of springback simulation. In order to determine the material parameter, compression-tension tests were carried out. The impact on springback results is shown. The effect of modeling a more complex material behavior is presented. The simulation using proposed material model shows good accuracy of springback prediction for hat-shape drawing, a typical cross-section for structural members.


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    Title :

    Springback Simulation for Automotive Body Components using High Strength Steels


    Additional title:

    Sae Technical Papers


    Contributors:
    Yoshitake, A. (author) / Gerlach, J. (author) / Blümel, K. (author) / Sato, K. (author) / Hira, T. (author)

    Conference:

    International Body Engineering Conference & Exposition ; 2003



    Publication date :

    2003-10-27




    Type of media :

    Conference paper


    Type of material :

    Print


    Language :

    English







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    Olsson,K. / Benedetto,A. / del Prete,A. et al. | Automotive engineering | 2000