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A quasi-three-dimensional shell element model,which can be effectively used to simulate theflanging 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 edscribed.And then the flangingand spring-back deformations of the retractor’s kickstand of a railcar made of stamped thick metal plate arenumerically simulated.The simulation results of flanging deformation are compared with those of internationalcommercial software,PAM-STAMP.and experimental ones.Finally,a predicting scheme of spring-backquantily for this problem is given.
A quasi-three-dimensional shell element model, which can be effectively used to simulate the flight and spring-back deformation, is introduced into the separately developed CAE software, KMAS. 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 edscribed. And then the flanging and spring-back deformations of the retractor’s kickstand of a railcar made of stamped thick metal plate arenumerically 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-backquantily for this problem is given.