Plane stress yield function described by 3rd-degree spline curve and its application

10th International Conference and Workshop on Numerical Simulation of 3D Sheet Metal Forming Processes

Aamaishi, Toshiro^1 ; Tsutamori, Hideo^2 ; Iizuka, Eiji^3 ; Sato, Kentaro^3 ; Ogihara, Yuki^3 ; Matsui, Yohei^2

JSOL Corporation, Tosabori Daibiru Building, 2-2-4 Tosabori, Nishi-ku, Osaka

550-001, Japan^1

Department of Mechanical Engineering, Daido University, 10-3, Takiharu-cho, Minami-ku Nagoya

457-8530, Japan^2

Steel Research Laboratory, JFE Steel Corporation, 1 Kokan-cho, Fukuyama

260-0835, Japan^3

关键词: A-plane;    ITS applications;    Material anisotropy;    Plane stress;    R value;    Spline curve;    Yield function;   

Others  :  https://iopscience.iop.org/article/10.1088/1742-6596/734/3/032067/pdf
DOI  :  10.1088/1742-6596/734/3/032067

来源: IOP

【 摘 要 】

In this study, a plane stress yield function which is described by 3rd-degree spline curve is proposed. This yield function can predict a material anisotropy with flexibility and consider evolution of anisotropy in terms of both r values and stresses. As an application, hole expanding simulation results are shown to discuss accuracy of the proposed yield function.