(I021)Elastic anisotropy of dual-phase steels and its implications for springback

摘要

Springback of metal sheets after plastic forming such as stamping is a major process defect, that impairs the subsequent assembly and use of the component. Springback is associated with unloading from a plastic state, which is generally non-linear and rather complex to predict [1]. However, beyond the behavior that complex unloading models can predict, springback is primarily influenced by the elastic modulus of the material. The adoption of modern lightweighting materials by the transportation industry, such as Advanced High-Strength Steels accentuates springback issues, as these materials attain high stresses during forming. The purpose of this brief paper is to give an overview of the authors’ work on measuring and modeling the elastic anisotropy of 5 automotive steels.