抄録
We study the load history effect on the plastic collapse load on the austenitic stainless steel piping subjected to combined axial force and torsion. Three loading patterns considers as follows: a) Torsion load followed by Axial force load, b) Axial force load followed by torsion load, c) Simultaneous load Axial force and torsion load. The present paper describes a method for evaluating the collapse load from the axial direction stress -displacement and shearing stress- rotation charts. The plastic collapse load evaluated by two-elastic-slope method of a notched austenitic stainless steel piping follows von Mises yield surface regardless of load history.
