A finite element simulation was performed of the multi-pass welding residual stress of Hastelloy-C276 alloy pipes using ABAQUS software based on the welding characteristics of Hastelloy C276 alloy.

• 针对哈氏合金C276焊接特点,运用有限元分析软件ABAQUS,对哈氏合金C276管道多道焊残余应力进行了有限元模拟。利用单元生死技术,模拟焊缝金属的形成;利用FORTRAN语言编写子程序DFLUX,实现了移动的高斯分布热源;