Approximate prediction methods for notch stresses and strains under elastic-plastic and creep conditions

Abstract

This paper describes general techniques for predicting notch stresses and strains under elastic-plastic and creep conditions. A linear interpolation method, usually used in creep analysis, is adapted for use in predicting elastic-plastic stresses and strains and the Neuber and the Molski-Glinka methods, usually used in elastic-plastic analyses, are adapted to predict peak creep stresses at notches in components. The accuracy of the methods is assessed by comparing predictions based on them with results obtained from elastic-plastic and creep finite element analyses.