The effects of weld mismatch J-integrals and Q-values for semi-elliptical surface flaws

被引：18

作者：

Boothman, DP ^{[1
]}

Lee, MMK ^{[1
]}

Luxmoore, AR ^{[1
]}

机构：

[1] Univ Wales Swansea, Dept Civil Engn, Swansea SA2 8PP, W Glam, Wales

来源：

ENGINEERING FRACTURE MECHANICS | 1999年 / 64卷 / 04期

基金：

英国工程与自然科学研究理事会;

关键词：

mismatch; J-integrals; Q-values; welds; cracks;

D O I：

10.1016/S0013-7944(99)00091-0

中图分类号：

O3 [力学];

学科分类号：

08 ; 0801 ;

摘要：

Three-dimensional finite element analysis of shallow semi-elliptical surface flaws in the centre of rectangular welds was undertaken, and the effects of varying weld mismatch and weld width on integrals and Q-values were investigated. An interesting relationship between weld width and the applied load at failure, as predicted from a J-Q failure locus, was observed. The practicalities of modifying the J- and Q-estimation schemes developed for homogeneous plates to include mismatch effects were investigated using a limited parametric study. (C) 1999 Elsevier Science Ltd. All rights reserved.

引用

页码：433 / 458

页数：26

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