Multiphysics welding simulation model

Abstract

The electron beam welding (EBW) process is extensively used for assembling titanium and other high strength components in the aircraft engine industry. For such applications, it is important to predict distortions and residual stresses after the welding process. In welding simulation, identifying the main physical phenomena is important to formulate reasonable hypothesis to capture the first order effect. A specific fluid flow model has been implemented in the in house CFD solver (ARGO). This model allows the simulation of the melt pool dynamics during welding by taking into account the influence of different convective terms. A single domain approach with an enthalpy-porosity formulation has been used. The influence of each term on the final melt pool shape has been studied.