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An extended strain energy density failure criterion by differentiating volumetric and distortional deformation
Wei YJ(魏宇杰); Wei, YJ; Chinese Acad Sci, Inst Mech, State Key Lab Nonlinear Mech, Beijing 100190, Peoples R China.
Source PublicationINTERNATIONAL JOURNAL OF SOLIDS AND STRUCTURES
2012-05-01
Volume49Issue:9Pages:1117-1126
ISSN0020-7683
AbstractWe extend Sih's strain energy density criterion (Si h, 1974) for crack kinks and material failure by weighting differently the volumetric and distortional parts in the extended strain energy density factor. The work is inspired by the factor that failure by microscopic shearing governed by distortion and microscopic separation controlled by hydrostatic tension represent distinct deformation processes, and should be treated differently as we count their influences to material failure. With the weight parameter introduced to the extended strain energy density factor criterion, we explain satisfactorily several critical experiments which reported crack kink in samples subjected to mixed-mode loading. The extended strain energy density idea is also used to derive a generalized pressure-dependent yielding criterion, which supplies a theoretical basis for those novel strength criteria for materials like bulk metallic glasses. Corresponding methods to determine the two material parameters, the critical strain energy density factor and the weight parameter quantifying the relative contribution by distortion over volumetric deformation, are discussed.
KeywordStrain Energy Density Fracture Criterion Crack Kink Pressure-dependent Yielding Distortional And Volumetric Stress Intensity Factors Crack-growth Fracture-mechanics Plane Situations Tip Expansion Ductile Kinking Paths Form
Subject Area疲劳与断裂力学
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Indexed BySCI ; EI
Language英语
WOS IDWOS:000302836300006
Funding OrganizationSupports from CAS Hundred Talent Project, KJCX2-EW-L03, 973 Project (2011CB711103), and NSFC grant (11021262) are acknowledged.
DepartmentLNM微结构计算力学(筹)
Classification一类/力学重要期刊
Citation statistics
Cited Times:11[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://dspace.imech.ac.cn/handle/311007/46668
Collection非线性力学国家重点实验室
Corresponding AuthorWei, YJ; Chinese Acad Sci, Inst Mech, State Key Lab Nonlinear Mech, Beijing 100190, Peoples R China.
Recommended Citation
GB/T 7714
Wei YJ,Wei, YJ,Chinese Acad Sci, Inst Mech, State Key Lab Nonlinear Mech, Beijing 100190, Peoples R China.. An extended strain energy density failure criterion by differentiating volumetric and distortional deformation[J]. INTERNATIONAL JOURNAL OF SOLIDS AND STRUCTURES,2012,49(9):1117-1126.
APA 魏宇杰,Wei, YJ,&Chinese Acad Sci, Inst Mech, State Key Lab Nonlinear Mech, Beijing 100190, Peoples R China..(2012).An extended strain energy density failure criterion by differentiating volumetric and distortional deformation.INTERNATIONAL JOURNAL OF SOLIDS AND STRUCTURES,49(9),1117-1126.
MLA 魏宇杰,et al."An extended strain energy density failure criterion by differentiating volumetric and distortional deformation".INTERNATIONAL JOURNAL OF SOLIDS AND STRUCTURES 49.9(2012):1117-1126.
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