多层焊对接接头焊接残余应力有限元分析  

Numerical Analysis on Residual Stress in Butt Joint by Multi-layer Welding

作　　者：付建科[1,2] 卢泽民[1,2] 雷小平[1,2] 李修能[2] 

机构地区：[1]三峡大学机械设计与维护省重点实验室,湖北宜昌443002 [2]三峡大学机械与材料学院,湖北宜昌443002

出　　处：《热加工工艺》2010年第23期147-149,152,共4页Hot Working Technology

基　　金：湖北省教育厅自然科学研究计划重点项目(2004D002);湖北省重点实验室开放基金资助项目(2010KJX02)

摘　　要：运用大型有限元计算软件ANSYS,结合弹塑性有限元理论对Q345锰钢对接接头的温度场和残余应力场进行模拟。有限元模型中选用三维实体单元,考虑材料物理性能随温度的变化和周边热交换。运用生死单元技术模拟焊缝金属的填充过程。得到了三维单层焊和两层焊焊接温度场和残余应力场,并对计算结果进行分析。The temperature field and residual stress field of Q345 manganese steel butt joint was simulated by ANSYS software combining with FEM theory.The 3D solid element was used to study the properties＇ changing with temperature and thermal exchange.The life and death technology was applied to simulate the weld metal filling process.The temperature field and residual stress field of 3D single-layer welding and multi-layer welding were obtained,and the calculation results were discussed.

关 键 词：两层焊 有限元模拟 温度场 残余应力场 

分 类 号：TG404[金属学及工艺—焊接]