An extended strain energy density failure criterion by differentiating volumetric and distortional deformation
文献类型：期刊论文
| 作者 | Wei YJ(魏宇杰) ; Wei, YJ
|
| 刊名 | INTERNATIONAL JOURNAL OF SOLIDS AND STRUCTURES
 |
| 出版日期 | 2012-05-01 |
| 卷号 | 49期号:9页码:1117-1126 |
| 通讯作者邮箱 | yujie_wei@lnm.imech.ac.cn |
| 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 |
| ISSN号 | 0020-7683 |
| 产权排序 | Chinese Acad Sci, Inst Mech, State Key Lab Nonlinear Mech, Beijing 100190, Peoples R China |
| 通讯作者 | Wei, YJ ; Chinese Acad Sci, Inst Mech, State Key Lab Nonlinear Mech, Beijing 100190, Peoples R China. |
| 中文摘要 | 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. |
| 学科主题 | 疲劳与断裂力学 |
| 分类号 | 一类/力学重要期刊 |
| 收录类别 | SCI ; EI |
| 资助信息 | Supports from CAS Hundred Talent Project, KJCX2-EW-L03, 973 Project (2011CB711103), and NSFC grant (11021262) are acknowledged. |
| 原文出处 | http://dx.doi.org/10.1016/j.ijsolstr.2012.01.015 |
| 语种 | 英语 |
| WOS记录号 | WOS:000302836300006 |
| 公开日期 | 2013-01-18 |
| 源URL | [http://dspace.imech.ac.cn/handle/311007/46668]  |
| 专题 | 力学研究所_非线性力学国家重点实验室 |
| 通讯作者 | Wei, YJ |
| 推荐引用方式 GB/T 7714 | Wei YJ,Wei, YJ. 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.(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. |
入库方式： OAI收割
来源：力学研究所
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