橋梁の耐震(4)

[I-301] Numerical Study on Yield Surface of Steel Plate based on Multi-axis Behavior

〇Akira Kasai¹, Yukinobu Nagata², Hitoshi Moriyama¹ (1.Kumamoto University, 2.Nippon Steel)

Keywords:Multiaxial Behavior, Yield Surface, Constitutive Law, Yield Function of Toresca, Yield Function of von Mises

This study is focused on grasping characteristics of steel plate under various loadings in biaxial stress state.
The biaxial loading tests using a cruciform specimen and an I-shape sheet specimen are experimental methods which can obtain loading surfaces for grasping elasto-plastic behavior of materials in biaxial stress state. In comparison between experimental results and analysis results, some problems were found, which should be solved for applying to forming simulation of steel pipes.