Limit load analysis of localized wall-thinning for steam generator tubes
During the past 40 years,a large number of operating PWPs have experienced degradation due to local wall-thinning of Steam generator (SG) tubes,which was caused by corrosion or squeezing of tubes at support plate or tubesheet intersections or other reasons. This paper introduced the study of experiment and numerical analyses for plastic limit loads of local wall-thinning SG tubes. The effect of the dimension of local wall-thinning on plastic limit load was analyzed. Major progresses achieved in this study include:(1)Experiment equipment which could test not only bursting pressure but also plastic limit load was built. Rectangle-like and arc-like flaw were respectively made on SG tubes. Different size local wall-thinning SG tubes of these two kinds of shape were test by using the equipmen;(2)Characterization method for local wall-thinning defect was provided based on experimental and finite element method.
SG tubes Limit load Local wall-thinning Finite element method Burst pressure
Hu Hui Peining Li
MOE Key Lab of Safety Science of Pressurized System,East China University of Science and Technology,Shanghai 200237,China
国际会议
Fracture Mechanics and Applications 2008(国际断裂力学2008年年会)(FM2008)
杭州
英文
307-312
2008-10-31（万方平台首次上网日期，不代表论文的发表时间）