Numerical simulation of residual stress and deformation on laser welding of “grooved-coat structure
Based on finite element analysis software MARC，the 3D numerical simulation on laser welding of “grooved-coat structure was conducted. This research work concerned the application of hybrid heat source model of laser welding, the simplifications of the mechanical and thermal boundary conditions, the discussions on the compute results of temperature field and residual stress field, and the comparison between the shape and size of computed weld pool and the experimental results. The results of the comparisons show that the finite element model is reasonable. The effects of the welding sequences on the welding residual stresses and deformation of structure were investigated. The results show that different welding sequence can get the same distortion pattern, but the amount of deformation is distinguishing, and the distribution of the residual stress is different from each other. The deformation and the residual stress obtained with symmetrical welding from outer to inner is the lowest.
Laser welding Numerical simulation Residual stress Distortion
Dongyang YAN Aiping WU Haojun JIAO Liqing NING Liangang ZHOU
Key Laboratory for Advanced Materials Processing Technology of Ministry of Education, Department of Aerospace Research Institute of Materials and Processing Technology, Beijing 100076
国际会议
郑州
英文
2007-10-23（万方平台首次上网日期，不代表论文的发表时间）