Paper (In Japanese)
A FUNDAMENTAL STUDY ON THE EFFECTS OF STRESS TRIAXIALITY ON THE DYNAMIC MECHANICAL PROPERTIES OF SS400 STEEL
2020 Volume 76 Issue 2 Pages I_379-I_387
Details
2020 Volume 76 Issue 2 Pages I_379-I_387
The effects of the stress triaxiality on the dynamic mechanical characteristics of steel were 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 SS400 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 under high strain rate. Test results revealed that the dynamic strength properties of steel increased under dynamic loading, but the effect of stress triaxiality on the dynamic strength properties was not significant. The fracture strain of steel decreased with the increasing triaxial stress under high strain rate.
