Application and comparison of different elastoplastic constitutive models for springback simulation of aluminum sheet forming

摘要

Springback is considered to be one of the most important problems in aluminum sheet stamp forming,leading to deviation from the designed target shape and assembly defects.In this study,a springback simulation model based on the benchmark of a Jaguar Land Rover aluminum panel is established.We embed several elastoplastic constitutive models(Barlat's 89,Barlat's YLD2000,Yoshida-Uemori(YU) + Barlat's 89,and YU +Barlat's YLD2000) in the finite element model,in order to discuss the influence of the constitutive model selection on springback prediction in aluminum sheet forming.