文献类型：期刊文献

英文题名：Evaluation of local thinned pressurized elbows

作者：Zhang, L; Wang, YP; Chen, J; Liu, CD

机构：[1]E China Univ Sci & Technol, Res Inst Proc Equipment & Pressure Vessel, Shanghai 200237, Peoples R China;[2]Det Norske Veritas AS, Oil Gas & Proc Ind, Shanghai 200336, Peoples R China

年份：2001

卷号：78

期号：10

起止页码：697

外文期刊名：INTERNATIONAL JOURNAL OF PRESSURE VESSELS AND PIPING

收录：;WOS:【SCI-EXPANDED(收录号:WOS:000173249000005)】；

语种：英文

外文关键词：collapse load; local thinned area; finite element method; analytical solution; elbow

摘要：Erosion, corrosion or mechanical damage may cause local thinned areas (LTA) in piping and degrade its integrity, Acceptability criteria for LTA are available for straight pipes, However, for elbows, there are few studies. In this paper, the finite element method (FEM) is used to calculate the collapse load of a local thinned pressurized elbow and to analyse the factors influencing the collapse load. Based on the solution of the collapse load of LTA straight pipe, the stress level in an elbow without defects, and finite element analysis results, an analytical solution of the collapse load of LTA pressurized elbow is presented. A method to assess the acceptability of LTA in an elbow is given and compared with FEM results. (C) 2001 Elsevier Science Ltd. All rights reserved.