摘要
为了有效控制白鹤滩水电站蜗壳与压力钢管封闭焊缝残余应力,采用基于热-力耦合分析的有限元软件MSC.Marc对封闭焊缝建立模型进行模拟。通过模拟两种不同焊接路径方案进行残余应力对比分析,给出优化建议。对优化方案进行了现场验证,结果表明优化方案效果明显,有效控制了白鹤滩蜗壳与压力钢管封闭焊缝的残余应力。
The model of closured weld was established by using the finite element software MSC.Marc based on the thermos-mechanical coupling analysis in order to control the residual stress between the spiral case and penstock in Baihetan Power Station.The optimization suggestions are put forward by the comparative analysis of two different schemes.The verification on-site of prioritization scheme is significantly effective in controlling the residual stress of closured weld between the spiral case and penstock in Baihetan power station.
作者
贾瑞燕
段伟赞
Jia Ruiyan;Duan Weizan(Harbin Electrical Machinery Company Limited,Harbin 150040,Heilongjiang,China)
出处
《机械制造文摘（焊接分册）》
2020年第4期6-10,共5页
Welding Digest of Machinery Manufacturing
关键词
蜗壳与压力钢管封闭焊缝
有限元分析
残余应力
closured weld between the spiral case and penstock
finite element analysis
residual stress
