Fatigue Analysis of Welding Joints of ASTM A36 Low Carbon Steel by Using Finite Element Method

Abstract

In this study, fatigue was analyzed for several types of weld joints, including the Butt joints, pipe-flange Butt joint, Lap and Tee joint. These weldments were studied under increasing loads by using CATIA software for modeling and using the ABAQUS environment to analyze the resulting stresses. Where the study included arc welding process, welded parts and weld bead metal are from the same material (ASTM A36 carbon low steel). In the end the results of fatigue analysis showed the maximum stress was reached in Butt joint (250Mpa) and in pipe-flange Butt joint(544.2Mpa), while the maximum stress on Lap joint (58.23Mpa) and the maximum stress on a Tee joint (250Mpa).