压力容器2016，Vol.33Issue(11)：24-32,9.DOI:10.3969/j.issn.1001-4837.2016.11.005
反应堆压力容器内环形件焊接过程数值分析
Finite Element Simulation on Welding Process of Nuclear Reactor Pressure Vessel′s Inner Ring
摘要
Abstract
The welding process of the inner ring of nuclear reactor pressure vessel was performed by finite element simulation and the distribution of welding residual stress was investigated. Compared with the 3D model,the 2D axisymmetric model can reflect the distribution of welding residual stress very well,and it can also improve the computational efficiency. Based on the axisymmetric model,the effect of the lumped-pass method and welding sequence on the residual stress were discussed. The results showed that lumped-pass method could both guarantee the accuracy and efficiency of the simulation. The stress was at a low level when the asymmetric groove and three times welding were conducted. These conclusions could pro-vide a reference for the design of the nuclear reactor pressure vessel.关键词
反应堆/残余应力/轴对称模型/焊道集中/焊接顺序Key words
reactor pressure vessel/residual stress/axisymmetric model/lumped-pass method/welding se-quence分类
机械制造引用本文复制引用
孙少南,于敦吉,邱阳,董元元,陈旭..反应堆压力容器内环形件焊接过程数值分析[J].压力容器,2016,33(11):24-32,9.基金项目
国家自然科学基金重点项目(51435012) （51435012）
