Computational welding mechanics

Abstract

The authors are establishing a new Welding Mechanics as a Computational Science by developing new methods for evaluation of welding stress and strain in two and three dimensions with the aid of FEM[1]. The following three methods have been developed: (1) Thermal elasto-plastic analysis, (2) Experimental method for measurement of three dimensional residual stress using inherent strain (the source of residual stress) as parameter, and (3) Prediction method by elastic analysis using inherent strain which is stored in a data-base. These methods are outlined. Additionally welding residual stresses analyzed and measured are shown to demonstrate the usefulness of these methods.