首页|Analysis of Nonlinear Heat Transfer and Residual Stresses during Multi-pass Welding of Penetration Assembly
Analysis of Nonlinear Heat Transfer and Residual Stresses during Multi-pass Welding of Penetration Assembly
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Welding residual plastic strains and stresses cause errors during the assembly and reduce the strength of the structure. Based on an elastic-plastic-model, a three-dimensional finite element numerical simulation of multi-pass butt welding of a representative penetration assembly is carried out in this paper. The nonlinear transient temperature field and the real-time dynamic stresses field during multi-pass butt welding with girth welds are obtained. In the end, the residual stresses of the complicated stainless steel penetration structure are calculated by f EM software ANS YS.
elastic-plastic-modeldouble ellipsoid heat sourcetemperature fieldresidual strain and stresspenetration assembly
Hong LI、Li LI
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College of Aerospace and Civil Engineering, Harbin Engineering University, Harbin 150001, China
College of Materials Science and Chemical Engineering, Harbin Engineering University, Harbin 150001, China
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