作者
Jisik Choi, Jinwoo Lee, Hyuk Jong Bong, Myoung-Gyu Lee, Frederic Barlat
发表日期
2018/10/15
期刊
International journal of solids and structures
卷号
151
页码范围
152-164
出版商
Pergamon
简介
In this study, a U-shaped channel formed using a double drawing process (double stage U-draw bending) was proposed to reduce the amount of springback in the AHSS sheets. The performance of the double stage U-draw bending process in reducing the amount of springback was compared with that of the conventional U-draw bending process. The process was simulated using a finite element (FE) analysis with two different types of anisotropic hardening models, namely, isotropic-kinematic and distortional models, to describe the Bauschinger effect and associated anisotropic hardening transients during the strain-path changes. Moreover, plastic anisotropy, captured by different yield functions, and the degradation of the elastic modulus were taken into account. In addition to the basic mechanical characterization tests conducted to identify the material coefficients, in-plane compression–tension experiments …
引用总数
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