弹性模量对薄板焊接变形仿真计算的影响

摘要

Four cases of Young's modulus were taken into thin plate welding simulation analysis to research the influ‐ence on welding deformation .Double ellipsoid thermal source and spot welding method were used in the analysis .The result showed that ,the effect just focused on the very small zone near weld bead .The bigger Young's modulus was ,the smaller welding deformation was .Predigesting that decreased Young's modulus was good for safety .%使用双椭球热源模型，采用点焊技术，对薄板焊接进行有限元仿真计算，针对屈服极限—温度曲线进行了方案设计，研究了弹性模量简化对薄板焊接变形的影响规律。结果表明：弹性模量的简化对焊接总体变形影响很小，对焊缝区域的局部变形有一定影响；随弹性模量取值增大，焊接变形减小；减小弹性模量取值的计算结果偏于安全。