Generalization of Neuber’s Rule for the Assessment of Local Stresses and Strains in Stress Concentration Zones for a Wide Range of Applied Strains

Abstract

Neuber rule is widely used to estimate stress-strain behavior of notched components upon local yielding occurs. This method proved to be useful in predicting maximum local strains and stresses in case of limited plasticity. However, the accuracy of the method drops considerably when extensive plastic strains develop. The paper describes a modification of the Neuber rule that allows assessing elasto-plastic material response at the notch root to extreme loading regimes when maximum notch strains are close to fracture strain values