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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.
2012-05-01
发表期刊INTERNATIONAL JOURNAL OF SOLIDS AND STRUCTURES
卷号49期号:9页码:1117-1126
ISSN0020-7683
摘要We 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.
关键词Strain 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
学科领域疲劳与断裂力学
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收录类别SCI ; EI
语种英语
WOS记录号WOS:000302836300006
项目资助者Supports from CAS Hundred Talent Project, KJCX2-EW-L03, 973 Project (2011CB711103), and NSFC grant (11021262) are acknowledged.
课题组名称LNM微结构计算力学(筹)
论文分区一类/力学重要期刊
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被引频次:10[WOS]   [WOS记录]     [WOS相关记录]
文献类型期刊论文
条目标识符http://dspace.imech.ac.cn/handle/311007/46668
专题非线性力学国家重点实验室
通讯作者Wei, YJ; Chinese Acad Sci, Inst Mech, State Key Lab Nonlinear Mech, Beijing 100190, Peoples R China.
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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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