Calculation of surface energy associated with formation of multiple kinked cracks

J. H. Chang; W. H. Wu

doi:10.1016/j.compstruc.2007.05.029

Calculation of surface energy associated with formation of multiple kinked cracks

J. H. Chang, W. H. Wu

Research output: Contribution to journal › Article › peer-review

1 Scopus citations

Abstract

An energy parameter termed M_c is proposed for calculation of the surface energy associated with formation of multiple kinked cracks in 2-D anisotropic elastic solids. The formulation is based on a path-independent contour integral. The surface energy can be exactly evaluated by M_c when the cracked solids are homogeneously-stressed (i.e., the material characteristic), and effectively approximated when the solids are nonhomogeneously-stressed (i.e., the structural characteristic). It is thus suggested that M_c be possibly used as a fracture parameter that quantitatively measures the degradation of material (e.g. in micromechanics) and/or structural integrity due to irreversible evolution of multiple kinked cracks.

Original language	English
Pages (from-to)	1729-1739
Number of pages	11
Journal	Computers and Structures
Volume	85
Issue number	23-24
DOIs	https://doi.org/10.1016/j.compstruc.2007.05.029
State	Published - Dec 2007

Keywords

M-integral
Material characteristic
Multiple kinked cracks
Path-independence
Structural characteristic
Surface energy

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10.1016/j.compstruc.2007.05.029

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title = "Calculation of surface energy associated with formation of multiple kinked cracks",

abstract = "An energy parameter termed Mc is proposed for calculation of the surface energy associated with formation of multiple kinked cracks in 2-D anisotropic elastic solids. The formulation is based on a path-independent contour integral. The surface energy can be exactly evaluated by Mc when the cracked solids are homogeneously-stressed (i.e., the material characteristic), and effectively approximated when the solids are nonhomogeneously-stressed (i.e., the structural characteristic). It is thus suggested that Mc be possibly used as a fracture parameter that quantitatively measures the degradation of material (e.g. in micromechanics) and/or structural integrity due to irreversible evolution of multiple kinked cracks.",

keywords = "M-integral, Material characteristic, Multiple kinked cracks, Path-independence, Structural characteristic, Surface energy",

author = "Chang, {J. H.} and Wu, {W. H.}",

note = "Funding Information: This work has been partially supported by National Science Council Grant No. NSC 94-2211-E-008-018 to National Central University. ",

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TY - JOUR

T1 - Calculation of surface energy associated with formation of multiple kinked cracks

AU - Chang, J. H.

AU - Wu, W. H.

N1 - Funding Information: This work has been partially supported by National Science Council Grant No. NSC 94-2211-E-008-018 to National Central University.

PY - 2007/12

Y1 - 2007/12

N2 - An energy parameter termed Mc is proposed for calculation of the surface energy associated with formation of multiple kinked cracks in 2-D anisotropic elastic solids. The formulation is based on a path-independent contour integral. The surface energy can be exactly evaluated by Mc when the cracked solids are homogeneously-stressed (i.e., the material characteristic), and effectively approximated when the solids are nonhomogeneously-stressed (i.e., the structural characteristic). It is thus suggested that Mc be possibly used as a fracture parameter that quantitatively measures the degradation of material (e.g. in micromechanics) and/or structural integrity due to irreversible evolution of multiple kinked cracks.

AB - An energy parameter termed Mc is proposed for calculation of the surface energy associated with formation of multiple kinked cracks in 2-D anisotropic elastic solids. The formulation is based on a path-independent contour integral. The surface energy can be exactly evaluated by Mc when the cracked solids are homogeneously-stressed (i.e., the material characteristic), and effectively approximated when the solids are nonhomogeneously-stressed (i.e., the structural characteristic). It is thus suggested that Mc be possibly used as a fracture parameter that quantitatively measures the degradation of material (e.g. in micromechanics) and/or structural integrity due to irreversible evolution of multiple kinked cracks.

KW - M-integral

KW - Material characteristic

KW - Multiple kinked cracks

KW - Path-independence

KW - Structural characteristic

KW - Surface energy

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U2 - 10.1016/j.compstruc.2007.05.029

DO - 10.1016/j.compstruc.2007.05.029

M3 - 期刊論文

AN - SCOPUS:35848949536

SN - 0045-7949

VL - 85

SP - 1729

EP - 1739

JO - Computers and Structures

JF - Computers and Structures

IS - 23-24

ER -

Calculation of surface energy associated with formation of multiple kinked cracks

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Keywords

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