Analysis of the effect of micro-crack on the plastic strain ahead of main crack in aluminium alloy 2024 T3

被引：12

作者：

Bouiadjra, B. Bachir ^{[1
]}

Benguediab, M. ^{[1
]}

Elmeguenni, M. ^{[1
]}

Belhouari, M. ^{[1
]}

Serier, B. ^{[1
]}

Aziz, M. Nait Abdel ^{[2
]}

机构：

[1] Univ Djillali Liabes Sidi Bel Abbes, Dept Mech Engn, Cite Ben Mhidi 22000, Sidi Bel Abbes, Algeria

[2] Univ Sci & Technol Lille, Ecole Univ Ingn Lille, EUDIL, F-59045 Lille, France

来源：

COMPUTATIONAL MATERIALS SCIENCE | 2008年 / 42卷 / 01期

关键词：

main crack; micro-crack; plastic zone; plastic strain; finite element method;

D O I：

10.1016/j.commatsci.2007.06.012

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

In this study the finite element method is used to analyze the effect of presence of micro-crack near a main crack on the variation of the shape and the size of the plastic zone ahead of the main crack for small scale plasticity in aluminium alloy 2024 T3. The effects of the horizontal and the vertical distances between the two cracks on the plastic zone are analyzed. The effect of micro-crack inclination is also highlighted. The obtained results show that the presence of the micro-crack can provoke the division of the plastic zone ahead of the main crack in two parts. It is also shown that the effect of the micro-crack disappears when the relative distance between the two cracks exceeds 10%. (C) 2007 Elsevier B.V. All rights reserved.

引用

页码：100 / 106

页数：7

共 15 条

[1]

Benguediab M., 2001, Journal of Materials Science and Technology, V9, P134

[2]

*CORN U, 1998, FRANC2D L VERS 1 5 U

[3] Interface crack interacting with a microvoid in the near-tip process zone [J].

Han J.-J. ;

Chen Y.-H. .

International Journal of Fracture, 2000, 102 (03) :223-244

[4]

HOM CL, 1980, INT J FRACTURE, V44, P103

[5] Interactions between inclusions and various types of cracks [J].

Hwu, CB ;

Liang, YK ;

Yen, WJ .

INTERNATIONAL JOURNAL OF FRACTURE, 1995, 73 (04) :301-323

[6] The tip plastic strain energy applied to ductile fracture initiation under mixed-mode loading [J].

Kuang, JH ;

Chen, YC .

ENGINEERING FRACTURE MECHANICS, 1997, 58 (1-2) :61-70

[7] FATIGUE CRACK INITIATION AND MICROCRACK GROWTH IN 2024-T4 AND 2124-T4 ALUMINUM-ALLOYS [J].

KUNG, CY ;

FINE, ME .

METALLURGICAL TRANSACTIONS A-PHYSICAL METALLURGY AND MATERIALS SCIENCE, 1979, 10 (05) :603-610

[8] A COMPARISON BETWEEN ANALYTICAL AND FINITE-ELEMENT ANALYSIS OF MAIN CRACK-MICROCRACK INTERACTION [J].

MEGUID, SA ;

GAULTIER, PE ;

GONG, SX .

ENGINEERING FRACTURE MECHANICS, 1991, 38 (06) :451-465

[9]

NEWMAN JC, 1992, 107662 NASA TM

[10]

PATTON EM, 1990, INT J FRACTURE, V46, P71

← 1 2 →