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铁道科学与工程学报

JOURNAL OF RAILWAY SCIENCE AND ENGINEERING

Vol. 16    No. 6    December 2006

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Optimized constitutive equation of material property based on inverse modeling for aluminum alloy hydroforming simulation
LANG Li-hui(郎利辉)1, LI Tao(李 涛)1, ZHOU Xian-bin(周贤宾)1
B. E. KRISTENSEN2, J. DANCKERT2, K. B. NIELSEN2

1. School of Mechanical Engineering and Automation, Beihang University, 
Beijing 100083, China; 
2. Department of Production, Aalborg University, Aalborg DK-9220, Denmark

Abstract: By using aluminum alloys, the properties of the material in sheet hydroforming were obtained based on the identification of parameters for constitutive models by inverse modeling in which the friction coefficients were also considered in 2D and 3D simulations. With consideration of identified simulation parameters by inverse modeling, some key process parameters including tool dimensions and pre-bulging on the forming processes in sheet hydroforming were investigated and optimized. Based on the optimized parameters, the sheet hydroforming process can be analyzed more accurately to improve the robust design. It proves that the results from simulation based on the identified parameters are in good agreement with those from experiments.

 

Key words: hydromechanical deep drawing; inverse modeling; aluminum alloy; simulation

ISSN 1672-7029
CN 43-1423/U

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