作者
Jinwoo Lee, Daeyong Kim, Young-Seon Lee, Hyuk Jong Bong, Frederic Barlat, Myoung-Gyu Lee
发表日期
2015/4/1
期刊
Computer Methods in Applied Mechanics and Engineering
卷号
286
页码范围
63-86
出版商
ELSEVIER
简介
A stress integration algorithm is provided for a novel homogeneous-yield-function-based anisotropic hardening (HAH) model. The new model is an extension of the original HAH model that describes cross-hardening or softening of a sheet metal under an orthogonal strain path change. A semi-explicit integration scheme for the stress update is utilized to efficiently handle the gradient of the distorted yield surface during complex strain path changes, as originally proposed by Lee et al.(2012). Validations of the algorithm developed were conducted by comparing the predicted stress–strain curves of dual-phase (DP) 780 and extra-deep-drawing-quality (EDDQ) steels with experimental stress–strain responses observed under cross-loading conditions. Finally, the accuracy of the proposed finite element (FE) formulations was assessed by r-value prediction and preparation of iso-error maps.
引用总数
20152016201720182019202020212022202320241664557731
学术搜索中的文章
J Lee, D Kim, YS Lee, HJ Bong, F Barlat, MG Lee - Computer Methods in Applied Mechanics and …, 2015