Finite element analysis on electron beam brazing temperature and stresses of stainless steel radiator

摘要

Based on thermal-elasto-plastic finite element theory, a two-dimensional finite element model for calculating electron beam brazing temperature and residual stress fields of stainless steel radiator are presented. The distributions of temperature and residual stress are studied. The results showed that temperature distribution on brazing surface is rather uniform, ranging from 1026℃ to 1090℃. The residual stresses are varied from initial compressive to tensile , and the variation of residual stress is very little in total zone of brazing surface.