Elastic-Plastic Analysis of Pipe with Internal Circumferential Crack in Bending

Abstract

An elastic-plastic analysis program using the finite element method and a J-integral post-processor using the virtual crack extension method are developed. The program accuracy is examined by two test problems: a plate with a hole in tension and a single -edge notched specimen in bending. This program solves the Battelle/NRC finite element analysis round-robin problem regarding an elastic-plastic analysis of a pipe with an internal circumferential crack in bending. An investigation is made into the effect of the finite element mesh on the results of the elastic-plastic analysis. It is found that a finer mesh gives greater J-integral and COD values, while the mesh does not affect the load-load point displacement curve.