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

共 34 条

[1] *AEA TECHN, 1989, ABACRACK 3 DIM SURF
[2] THE ASSESSMENT OF DEFECTS IN STRUCTURES OF STRAIN-HARDENING MATERIAL
AINSWORTH, RA
[J]. ENGINEERING FRACTURE MECHANICS, 1984, 19 (04) : 633 - 642
[3] Anderson T. L., 1995, FRACTURE MECH FUNDAM
[4] [Anonymous], 1931 EPRI NP
[5] [Anonymous], J POLYM RES
[6] BLEAKLEY MH, 1980, P 3 C FRACT ECF3, P155
[7] J-estimation for semi-elliptical surface cracks in wide plates under direct tension
Boothman, DP
Lee, MMK
Luxmoore, AR
Sumpter, JDG
[J]. FATIGUE & FRACTURE OF ENGINEERING MATERIALS & STRUCTURES, 1998, 21 (03) : 333 - 346
[8] A shallow crack assessment scheme for generalised material behaviour in bending
Boothman, DP
Lee, MMK
Luxmoore, AR
[J]. ENGINEERING FRACTURE MECHANICS, 1997, 57 (05) : 493 - 506
[9] BOOTHMAN DP, 1997, THESIS U WALES SWANS
[10] BOOTHMAN DP, IN PRESS J ESTIMATIO

← 1 2 3 4 →