Finite Element Analysis of Weld Induced Residual Stresses in Two Dissimilar Pipes

In most industrial applications dissimilar metal joining is unavoidable. The joining of dissimilar metals is generally more challenging than that of similar metals because of differences in physical, chemical and mechanical properties of the base metals welded. In the present work Manual Metal Arc Welding of austenitic stainless steel to carbon steel were studied. The Schaeffler diagram were used in determining suitable filler metal for this process, and then the finite element analysis of residual stresses in butt welding of two dissimilar pipes is performed with the commercial software ANSYS, which includes moving heat source, material deposit, temperature dependant material properties, metal plasticity and elasticity, transient heat transfer and mechanical analysis. Welding simulation considered as a sequentially coupled thermo-mechanical analysis. The element birth and death technique was employed for simulation of filler metal deposition.

کلیدواژه ها:

dissimilar joint ، coupled field analysis ، birth and death ، Schaeffler diagram