Numerical Analysis on Electron Beam Brazing Stresses Fields of Stainless Steel

摘要

Based on thermal-elasto-plastic finite element theory, a two-dimensional finite element model for calculating electron beam brazing temperature and residual stresses fields of stainless steel radiator is presented. The distributions of temperature and residua l stresses are studied. The results show that temperature distribution on brazing surface is rather uniform, ranging from 1026°C to 1090°C. The residual stresses are varied from initial compressive to tensile stresses, and the tensile stresses are changed into tensile stresses in the end; the variation of residual stress is very little in total zone of brazing surface.