摘要：This paper presents a numerical approach for 3D simulation of welding processes. The main objective of this simulation is the determination of temperatures and stresses during and after the process. Temperature distribution define the heat affected zone where material properties are affected. Stress calculation is necessary because high residual stresses may promote brittle fractures, fatigue, or stress corrosion in regions near the weld. The finite element method has been used to perform 1) a thermal analysis involving non-isothermal phase change and 2) a mechanical elasto-plastic analysis. Comparisons between analytical and numerical results for a non-isothermal solidification test case are presented.
其他摘要：This paper presents a numerical approach for 3D simulation of welding processes. The main objective of this simulation is the determination of temperatures and stresses during and after the process. Temperature distribution define the heat affected zone where material properties are affected. Stress calculation is necessary because high residual stresses may promote brittle fractures, fatigue, or stress corrosion in regions near the weld. The finite element method has been used to perform 1) a thermal analysis involving non-isothermal phase change and 2) a mechanical elasto-plastic analysis. Comparisons between analytical and numerical results for a non-isothermal solidification test case are presented.
