Abstract
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.
