Influence Coefficients of Stress Intensity Factors for Curved Tubing With a Semi-Elliptical Crack

被引：0

作者：

Plante, Kirsten ^{[1
]}

Tan, Choon-Lai ^{[1
]}

机构：

[1] Carleton Univ, Dept Mech & Aerosp Engn, Ottawa, ON K1S 5B6, Canada

来源：

JOURNAL OF PRESSURE VESSEL TECHNOLOGY-TRANSACTIONS OF THE ASME | 2012年 / 134卷 / 05期

关键词：

SURFACE CRACKS; LOAD; PRESSURE; ELBOWS; FLAWS;

D O I：

10.1115/1.4006857

中图分类号：

TH [机械、仪表工业];

学科分类号：

0802 ;

摘要：

The boundary element method is employed to determine polynomial influence coefficients of stress intensity factors, K-I, for a semi-elliptical crack in internally pressurized thick-walled curved tubing. Numerical results of these coefficients are obtained for a wide range of geometric parameters; they are the bend radius ratio, cross-sectional radius ratio, angular extent of the bend, and relative crack depth. The use of influence coefficients allows K-I solutions to be determined for different load cases without repetitive 3D stress analysis of the cracked body. This is demonstrated for the case of autofrettage where the effects on K-I of the residual stresses arising from it are presented. [DOI: 10.1115/1.4006857]

引用

页数：6

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