Finite Element Analysis on the Formation of Residual Stresses during Welding of Oil and Gas Pipe

Abstract

This study deals with the prediction of residual stress in oil and gas pipe welds using finite element (FE) method. Arc welding is widely used in industries such as piping, oil and gas pipeline, power plant station, etc.Non-uniform distribution of plastic and thermal strain is responsible for producing a large amount of residual stress and deformation in all welded structures, including pipelines. Numerical simulation can be used to predict residual stress in pipe welds; the aim of this paper is to find whether two-dimensional (