压力容器Issue(9)：19-25,7.DOI:10.3969/j.issn.1001-4837.2015.09.003
强度匹配对焊接管韧性断裂行为的影响
Effect of Strength Mismatch on Ductile Fracture Behavior of Welding Pipe
摘要
Abstract
This paper presents an investigation of the effect of strength mismatch on ductile fracture behav-ior for welding joints based on the elastic-plastic fracture theory and the complete Gurson model.The mod-ified boundary layer(MBL)model has been computed in the finite element analysis using ABAQUS soft-ware.At the same time,the influences of yield strength and material hardening are also considered.The results show that fracture toughness and crack growth resistance curves decrease with the increase of strength mismatch My at different strain hardening and yield strength.关键词
强度匹配/裂纹尖端开口位移/修正边界层模型/裂纹扩展阻力曲线Key words
strength mismatch/crack tip opening displacement(CTOD)/modified boundary layer(MBL) model/crack growth resistance curve分类
机械制造引用本文复制引用
李朋朋,徐杰,卓小敏,樊宇,孙智,胡一杰..强度匹配对焊接管韧性断裂行为的影响[J].压力容器,2015,(9):19-25,7.基金项目
国家自然科学基金资助项目（51301197）；江苏省自然科学基金资助项目 （）
