Quantification of the influence of vertex singularities on fatigue crack behavior

被引：24

作者：

Hutar, P. ^{[1
]}

Nahlik, L. ^{[1
]}

Knesl, Z. ^{[1
]}

机构：

[1] Acad Sci Czech Republic, Inst Phys Mat, Brno 61662, Czech Republic

来源：

COMPUTATIONAL MATERIALS SCIENCE | 2009年 / 45卷 / 03期

关键词：

Vertex singularity; Generalized stress intensity factor; Stress singularity; Fatigue crack; V-notch; CORNER POINT SINGULARITIES; PROPAGATION; INTERFACE; STRESS;

D O I：

10.1016/j.commatsci.2008.08.009

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

The effect of vertex singularity oil fatigue crack behavior is presented in the article. The methodology based on generalized stress intensity factor and model of V-notch is used for reliable estimation of the fatigue crack growth rate in the area close to the free Surface, where the effect of the vertex singularity is dominant. It is shown that decrease of the crack Singularity exponent close to the vertex point leads to a decrease in the fatigue crack growth rate and contributes to a typical curved crack front observed experimentally for through crack. (C) 2008 Elsevier B.V. All rights reserved.

引用

页码：653 / 657

页数：5

共 14 条

[1] THE VARIATION OF THE STRESS SINGULARITY AT THE NOTCH TIP AS NOTCH ANGLE AND RADIUS OF CURVATURE [J].

AWAJI, H ;

YOKOBORI, AT ;

YOKOBORI, T .

COMPUTERS & STRUCTURES, 1986, 22 (01) :25-30

[2] SURFACE SINGULARITY AND CRACK-PROPAGATION [J].

BAZANT, ZP ;

ESTENSSORO, LF .

INTERNATIONAL JOURNAL OF SOLIDS AND STRUCTURES, 1979, 15 (05) :405-426

[3] STATE OF STRESS AT VERTEX OF A QUARTER-INFINITE CRACK IN A HALF-SPACE [J].

BENTHEM, JP .

INTERNATIONAL JOURNAL OF SOLIDS AND STRUCTURES, 1977, 13 (05) :479-492

[4] PLANE ELASTOSTATIC PROBLEM OF A LOADED CRACK TERMINATING AT A MATERIAL INTERFACE [J].

BOGY, DB .

JOURNAL OF APPLIED MECHANICS, 1971, 38 (04) :911-&

[5] The influence of the Poisson's ratio and corner point singularities in three-dimensional plasticity-induced fatigue crack closure: A numerical study [J].

de Matos, P. F. P. ;

Nowell, D. .

INTERNATIONAL JOURNAL OF FATIGUE, 2008, 30 (10-11) :1930-1943

[6] THEORY FOR FATIGUE CRACK-PROPAGATION [J].

DUGGAN, TV .

ENGINEERING FRACTURE MECHANICS, 1977, 9 (03) :735-747

[7] 3D fatigue crack propagation: Experimental studies [J].

Heyder, M ;

Kuhn, G .

INTERNATIONAL JOURNAL OF FATIGUE, 2006, 28 (5-6) :627-634

[8]

HUTAR P, 2008, 17 ECF

[9]

KLUSAK J, 2002, THESIS BUT BRNO CZEC

[10] Influence of interface on fatigue threshold values in elastic bimaterials [J].

Knésl, Z ;

Náhlík, L ;

Radon, JC .

COMPUTATIONAL MATERIALS SCIENCE, 2003, 28 (3-4) :620-627

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