Life Prediction of High temperature Welded Component by Skeletal Point Rupture Stress
At the present time, as the steam conditions and capability of the supercritical power unit increasing, the unit reliability is an important factor for the unit efficiency. High temperature, thick walled pipes are widely used in power plants and chemical plants. In this paper, life of the welded joint was predicted by the methods of skeletal point (SP) rupture stress rupture stress, which was calculated by finite element method (FEM). For the life prediction of welded component, the continuum damage mechanics was employed too. The life prediction of the welded joint by SP rupture stress was compared with the life prediction by the method of continuum damage mechanics (CDM). The research results showed that the two predicted methods were consistent. So, it can be concluded that the SP rupture stress can be used for predicting life of the high temperature welded component. The SP rupture stress method was used conveniently for the structure of power plant or other high temperature components.
Skeletal point (SP) rupture stress, Welded component, FEM life prediction
Guodong Zhang Yanfen Zhao Fei Xue Zhaoxi WANG Changyu Zhou
Suzhou Nuclear Power Research Institute , Suzhou 215004, PR China School of Mechanical and Power Eng Suzhou Nuclear Power Research Institute , Suzhou 215004, PR China Tsinghua University, Beijing 100084 China Suzhou Nuclear Power Research Institute , Suzhou 215004, P School of Mechanical and Power Engineering, Nanjing University of Technology, Nanjing 210009,PR Chin
国际会议
沈阳
英文
156-160
2010-07-28（万方平台首次上网日期，不代表论文的发表时间）