|About this Abstract
||NUMISHEET 2021: The 12th International Conference on Numerical Simulation of 3D Sheet Metal Forming Processes
||Simplified Identification Method of Yield Function Using Circumscribing Polygon of Yield Surface and Its Application for Deep-drawing Process
||Hideo Takizawa, Shohei Kodama
|On-Site Speaker (Planned)
In this study, a method to identify the yield surface by three types of simple material tests is proposed. The uniaxial tensile test, hydraulic bulge test, and plane strain tensile test are used in this method. A polygon circumscribing the equal plastic work contour can be defined by assuming the associated flow rule. The parameters of anisotropic yield function are identified as a smooth curve inscribed in this polygon. The yield surface of the cold-rolled steel sheet is identified by the proposed method and modeled with the Yld2000-2d yield function.
The yield function identified by the proposed method is applied to a deep-drawing of a cylindrical cup. The results of finite element analysis are compared with the experimental results. The analyzed ear height of the deep-drawn cup agrees with the experimental results qualitatively.
||Definite: At-meeting proceedings