A Thermal Conditional Approach of a Butt Weld at Different Temperature Conditions

Abstract

In this paper the project gives the information about the residual stresses induced in a butt weld joint due to welding. Experimentation was carried out on a plate made of low carbon steel having dimensions 0.115 x 0.048 x 0.006 meters. Manual Metal Arc Welding of carbon steel plates was studied. The finite element analysis of residual stresses in butt welding of two similar plates is performed with the ANSYS software. This analysis includes a finite element model for the thermal and mechanical welding simulation. It also includes a moving heat source, material deposit, temperature dependent material properties, metal plasticity and elasticity, transient heat transfer and mechanical analysis. The welding simulation was considered as a sequential coupled thermo-mechanical analysis and the element birth and death technique was employed for the simulation of filler metal deposition. The residual stress distribution and magnitude in the axial direction was obtained. A good agreement between the computation and experimental results is obtained. The variation of the temperature with time, and residual stresses are obtained. The variation of these are reported and discussed.