Effect of internal pressure on plastic loads of 90° elbows with circumferential part-through surface cracks under in-plane bending

被引：17

作者：

Hong, Seok-Pyo ^{[1
]}

Kim, Jong-Hyun ^{[1
]}

Kim, Yun-Jae ^{[1
]}

Budden, P. J. ^{[2
]}

机构：

[1] Korea Univ, Dept Mech Engn, Sungbuk Ku, Seoul 136701, South Korea

[2] British Energy, Assessment Technol Grp, Gloucester GL4 3RS, England

来源：

ENGINEERING FRACTURE MECHANICS | 2010年 / 77卷 / 04期

关键词：

Circumferential crack; Combined pressure and in-plane bending; Elbow; Finite element limit analysis; Plastic load; PIPE BENDS; FINITE-ELEMENT; PIPING ELBOWS; LIMIT LOADS; COLLAPSE; MOMENT;

D O I：

10.1016/j.engfracmech.2009.11.013

中图分类号：

O3 [力学];

学科分类号：

08 ; 0801 ;

摘要：

This paper quantifies the effect of internal pressure on plastic loads for elbows with circumferential through-wall and constant-depth part-through surface cracks under in-plane bending. Results are based on FE limit analyses using elastic-perfectly plastic materials and the non-linear geometry option. It is found that, for larger values of r/t, the pressure effect on plastic loads is more pronounced and plastic loads for combined loading cases could be much higher than those for pure bending cases. Full FE data of plastic loads are tabulated, and effects of crack geometries on interaction curves are discussed. (C) 2009 Elsevier Ltd. All rights reserved.

引用

页码：577 / 596

页数：20

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