Experimental study of low-cycle fatigue of pipe elbows with local wall thinning and life estimation using finite element analysis

被引：38

作者：

Takahashi, Koji ^{[1
]}

Tsunoi, Satoshi ^{[1
]}

Hara, Takumi ^{[1
]}

Ueno, Tomohiro ^{[1
]}

Mikami, Akira ^{[1
]}

Takada, Hajime ^{[1
]}

Ando, Kotoji ^{[1
]}

Shiratori, Masaki ^{[1
]}

机构：

[1] Yokohama Natl Univ, Fac Engn, Yokohama, Kanagawa 2408501, Japan

来源：

INTERNATIONAL JOURNAL OF PRESSURE VESSELS AND PIPING | 2010年 / 87卷 / 05期

关键词：

Wall thinning; Elbow; Low-cycle fatigue; Carbon steel pipe; Finite element analysis; FRACTURE-BEHAVIOR;

D O I：

10.1016/j.ijpvp.2010.03.022

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

Low-cycle fatigue tests were conducted using elbow specimens with local wall thinning Local wall thinning was machined on the inside of the elbow in order to simulate metal loss from erosion corrosion The local wall thinning was located in three different areas known as the extrados, crown and intrados. The elbow specimens were subjected to cyclic in-plane bending under displacement control without internal pressure In addition, three-dimensional elastic-plastic analyses were also carried out using the finite element method As a result, the crack penetration area and the crack growth direction were successfully predicted by the analyses. The fatigue lives estimated by the analyses were close to those obtained by the experiments. (C) 2010 Elsevier Ltd. All rights reserved

引用

收藏

页码：211 / 219

页数：9

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