Numerical study on flanging and spring-back of stamped thick metal plate |
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Authors: | Hu Ping Liu Haipeng Liu Yuqi |
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Affiliation: | (1) Institute of Automobile Panel Forming Technique, Jilin University, 130025 Changchun, China |
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Abstract: | A quasi-three-dimensional shell element model, which can be effectively used to simulate the flanging and spring-back deformation, is introduced into the independently developed CAE software, KMAS. In this model, a double surface contact algorithm, which allows the gap between punch and die to change, and a spring-back treatment scheme based on finite element meshing are described. And then the flanging and spring-back deformations of the retractor's kickstand of a railcar made of stamped thick metal plate are numerically simulated. The simulation results of flanging deformation are compared with those of international commercial software, PAM-STAMP, and experimental ones. Finally, a predicting scheme of spring-back quantily for this problem is given. Project supported by the National Natural Science Foundation of China (No. 19832020) and the Ministry of Education of China. |
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Keywords: | quasi-three-dimensional shell element double surface contact algorithm flanging springback retractor's kickstand |
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