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

[21]

MILNE I, 1986, R6 CEGB

[22]

MINAMI F, 1994, P 2 WORKSH CONSTR EF

[23]

NEVALAINEN M, 1995, UILUENG952001

[24]

NEWMAN JC, 1981, EMPIRICAL STRESS INT

[25] FAMILY OF CRACK-TIP FIELDS CHARACTERIZED BY A TRIAXIALITY PARAMETER .1. STRUCTURE OF FIELDS [J].

ODOWD, NP ;

SHIH, CF .

JOURNAL OF THE MECHANICS AND PHYSICS OF SOLIDS, 1991, 39 (08) :989-1015

[26]

PARKS DM, 1992, TOPICS FRACTURE FATI, pCH2

[27] RELATIONSHIP BETWEEN CRITICAL TENSILE STRESS AND FRACTURE TOUGHNESS IN MILD-STEEL [J].

RITCHIE, RO ;

KNOTT, JF ;

RICE, JR .

JOURNAL OF THE MECHANICS AND PHYSICS OF SOLIDS, 1973, 21 (06) :395-410

[28] EFFECT OF WELD METAL MISMATCH ON TOUGHNESS REQUIREMENTS - SOME SIMPLE ANALYTICAL CONSIDERATIONS USING THE ENGINEERING TREATMENT MODEL (ETM) [J].

SCHWALBE, KH .

INTERNATIONAL JOURNAL OF FRACTURE, 1992, 56 (03) :257-277

[29]

SHIH CF, 1992, FRACTURE MECH APPROA

[30]

SUMPTER JDG, 1992, SHALLOW CRACK FRACTU

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