Simulation of Multi-Pass Gas Metal Arc Welding of Structural Steel Plates

摘要

A finite element model for simulation and analysis of Multi-pass Welding process is developed using general purpose finite element software package Ansys. This new model consist of one in which the finite element grows continuously in order to accommodate metal transfer during welding. The heat transfer during welding process is carried along with growing element. Temperature dependent thermo-mechanical properties, effect of latent heat and the convective and radiative boundary conditions were included in the model. Comparison of numerical results thus obtained with experimental values shows good agreement. It is therefore demonstrated that FEA can be applied to understand multi-pass welding process and hence to be a useful tool for future process analysis and control with the view of optimising the desirable properties and microstructure.