IMECH-IR  > 非线性力学国家重点实验室
Cavitation instabilities in bulk metallic glasses
Huang X(黄鑫); Ling Z(凌中); Dai LH(戴兰宏); Dai, LH (reprint author), Chinese Acad Sci, Inst Mech, State Key Lab Nonlinear Mech, Beijing 100190, Peoples R China.
Source PublicationINTERNATIONAL JOURNAL OF SOLIDS AND STRUCTURES
2013-05-01
Volume50Issue:9Pages:1364-1372
ISSN0020-7683
AbstractTo reveal the mechanism of a void-dominated fracture process in bulk metallic glasses, a theoretical description of void growth undergoing remote hydrostatic tension is presented. Special attention is focused on cavitation instabilities and dynamics of a dynamic void growth process. The critical stress for cavitation instabilities is derived theoretically, which is validated by numerical simulations with a finite difference method. To characterize the dynamic void growth process, a dimensionless number is proposed, which embodies the competition of inertial effects, loading rate effects and viscous effects. It is found that inertial effects can induce vibration of the void growth rate at the rise stage of loading history and impede the growth at the steady stage. In addition, to study the void growth at the early stage of a void-dominated fracture process, quasistatic cases without inertial effects are examined. It is shown that the void growth rate strongly depends on the evolution of free volume concentration.
KeywordVoid Growth Metallic Glasses Dynamic Fracture Free Volume
Subject Area固体力学
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Indexed BySCI ; EI
Language英语
WOS IDWOS:000326858200015
Funding OrganizationNational Key Basic Research Program of China [2012CB937500]; NSFC [11272328, 11132011, 11021262, 11002144, 10872206]; National Natural Science Foundation of China-NSAF [10976100]
DepartmentLNM冲击动力学与新型材料力学性能
Classification一类/力学重要期刊
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Document Type期刊论文
Identifierhttp://dspace.imech.ac.cn/handle/311007/47581
Collection非线性力学国家重点实验室
Corresponding AuthorDai, LH (reprint author), Chinese Acad Sci, Inst Mech, State Key Lab Nonlinear Mech, Beijing 100190, Peoples R China.
Recommended Citation
GB/T 7714
Huang X,Ling Z,Dai LH,et al. Cavitation instabilities in bulk metallic glasses[J]. INTERNATIONAL JOURNAL OF SOLIDS AND STRUCTURES,2013,50(9):1364-1372.
APA 黄鑫,凌中,戴兰宏,&Dai, LH .(2013).Cavitation instabilities in bulk metallic glasses.INTERNATIONAL JOURNAL OF SOLIDS AND STRUCTURES,50(9),1364-1372.
MLA 黄鑫,et al."Cavitation instabilities in bulk metallic glasses".INTERNATIONAL JOURNAL OF SOLIDS AND STRUCTURES 50.9(2013):1364-1372.
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