Numerical simulation on temperature and stress fields of CLAM steel TIG weld
1. School of Material Science and Engineering, Jiangsu University, Zhenjiang, Jiangsu 212013, China; 2. Physics Department, University of Science and Technology of Beijing, Beijing 100083, China)
Abstract： ANSYS thermal-structural coupling technology, Parametric Design Language, life-death element technique, and double ellipsoid heat source were applied togegher in the numerical simulation of temperature and stress fields on single layer welding and the single-sided double layer welding of CLAM steel TIG weld joints. Without considering phase change and only considering the effects of residual stress field, the stress field based on temperature field data was calculated. The results of simulation with that of experiment were compared. The numerical results of residual stress distribution are almost consistent with the experimental ones. On middle section of the surface, longitudinal stress is tensile stress near the weld zone, reaches the maximum in the fusion area, and turn to compressive stress away from weld zone. The transverse stress is small tensile stress. Residual stress of single-sided doublelayer welding specimen is lower than that of single layer welding specimen.
2011, Vol. 32 
