Theoretical and experimental analysis of thermo-mechanical phenomena during electron beam welding process

The information about fusion zone geometry was subsequently used to define heat source. The numerical model based on Finite Element Method utilized heat source model to describe the evolution of temperature and stress field during and after welding process. The calculated temperature field was compared against the shape of the actual fusion zone. The PLS-FEM model predicted the shape of fusion zone with satisfying accuracy. The values of calculated residual stresses were compared with X-ray diffraction measurements.