Creep analysis of the pipe with local thinning defect under pressure and moment at high temperature
High temperature pipe components are used widely in the piping system of power plants, petrochemical industry and nuclear power industry. At high temperature and high pressure environment, the pipe material is apt to creep, thermal fatigue, excessive thermal oxide, carburizing and the corrosion, which will cause the deterioration of material properties and reduce the life of the pipes. The research object of the paper is the 10CrMo910 steel pipe with local thinning defect, which was served at 560℃ under pressure and moment. The orthogonal experiment method was used to design the combined simulation cases for the pipe with local thinning defect at high temperature. The finite element model of a straight pipe with local thinning defect was built up. The creep behavior of pipe with local thinning defect at high temperature was calculated with finite element method by ABAQUS. The Mises stress and creep strain of the pipe models with different defects was obtained. The results demonstrated that the depth of defect has greatest influence on the creep behavior of pipe with local thinning defect under pressure and moment at high temperature.
Loacal thinning defect Load Creep High temperature
Changyu Zhou Jilin Xue Guodong Zhang
School of Mechanical and Power Engineering, Nanjing University of Technology, Nanjing 210009, China
国际会议
国际断裂力学2007年会(Fracture Mechanics and Applications 2007)
长沙
英文
207-211
2007-11-01（万方平台首次上网日期，不代表论文的发表时间）