Effect of anisotropy parameters on the initiation of plastic yielding in thin hollow disks subject to thermomechanical loading

Abstract

A thin elastic-plastic annular disk subject to thermomechanical loading is considered. It is assumed that plastic yielding is controlled by Hill's quadratic orthotropic yield criterion. A distinguished feature of the boundary value problem considered is that there are two loading parameters. One of these parameters is temperature and the other is pressure over the inner radius of the disk. It is shown that the initiation of plastic yielding may occur either at the inner radius or at the outer radius of the disk depending on the value of anisotropy parameters. © 2013 Springer Science+Business Media New York.