材料・複雑現象の力学A

[S03A-04] A fundamental study on effects of stress triaxiality on dynamic mechanical properties of SS400 steel

*Shori Hamada¹, Masuhiro Beppu¹, Seiichiro Tsutsumi², Hiroyoshi Ichino¹ (1. National Defense Academy, 2. Osaka University)

Keywords:Steel plates, Dynamic mechanical properties, Stress triaxiality

The effects of the stress triaxiality on the dynamic mechanical characteristics of steel was not sufficiently investigated, even though the fracture strain of steel decreases with the increasing triaxial stress under static loading. In this study, dynamic tensile mechanical properties of steel were experimentally investigated by using a SS400 plate specimen with a notch to examine the effect of the stress triaxiality on the yield stress, tensile strength and fracture strain.