摘要
运用大型有限元计算软件ABAQUS ,对 3 16L不锈钢平板多道焊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对流、辐射散热的影响。运用内生热的加载方法模拟焊接热源 ,运用单元激活技术模拟多道焊焊接过程。获得了三维多道焊焊接温度场和残余应力场 。
Temperature and stress field of 316L stainless steel is simulated by FEM using ABAQUS codes. The 3-D solid elements are used in FEM model, and temperature depended material properties are considered as well as the convection and radiation as boundary conditions. Internal heat generation loading method is applied to simulate heat source, and model change ability to simulate multi-pass weld. The temperature field and residual stress field of 3-D multi-pass weld are obtained, and the results are discusses.
出处
《机械强度》
CAS
CSCD
北大核心
2004年第2期218-222,共5页
Journal of Mechanical Strength
基金
江苏省自然科学基金资助项目 (BK2 0 0 1 0 98)~~
关键词
多道焊
有限元
数值模拟
温度场
残余应力场
不锈钢
焊接接头
Multi-pass welding
Simulation by finite element method
Temperature field
Residual stress field
