Department of Plasticity Technology, Shanghai Jiao Tong University
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DOI:
10.7502/j.issn.1674-3962.2016.04.03
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Abstract:
In the present work, the state-of-the-art in forming technologies of sheet metal components in energy industry was summarized. Especially, the current forming technologies of polar plate for fuel PEMFC, spacer grid in LWR fuel assembly and solar cell substrate were mainly addressed. The three dimensional forming simulation model of blanking process of one spacer grid stripe was built up based on ABAQUS/Explicit. The user material subroutine VUMAT was employed and the material model, anisotropic yield criterion and ductile fracture criteria in ABAQUS were implemented. Comparison of predicted blanking fracture section and experimental results shows that the FEM simulation results are in good agreement with the experimental ones. Through the secondary development of the subroutine in ABAQUS, the mapping of the historical residual damage from solid elements to shell element was realized. The bending process after blanking was simulated with this mapping method. The accuracy of the mapping method was verified by comparing simulation results with or without mapping to the experiment result.