Elastic criterion for shear-banding instability in amorphous solids

doi:10.1103/PhysRevE.105.045003

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	Elastic criterion for shear-banding instability in amorphous solids
	Wang XJ(王晓娟)1,2,3; Lu YZ 2; Lu X2 ; Huo JT 4; Wang YJ(王云江)1,3 ; Wang WH5 ; Dai LH(戴兰宏)1,3 ; Jiang MQ(蒋敏强)1,3
通讯作者	Lu, Y. Z.(luyz@djtu.edu.cn)
发表期刊	PHYSICAL REVIEW E
	2022-04-25
卷号	105 期号:4 页码:9
ISSN	2470-0045
摘要	In amorphous solids, plastic flow is prone to localization into shear bands via an avalanche of sheartransformation (ST) rearrangements of constituent atoms or particles. However, such banding instability still remains a lack of direct experimental evidence. Using a real 3D colloidal glass under shear as proof of principle, we study STs??? avalanches into shear banding that is controlled by strain rates. We demonstrate that, accompanying the emergent shear banding, the elastic response fields of the system, typical of a quadrupole for shear and a centrosymmetry for dilatation, lose the Eshelby-type spatial symmetry; instead, a strong correlation appears preferentially along the banding direction. By quantifying the fields??? spatial decay, we identify an elastic criterion for the shear-banding instability, that is, the strongly correlated length of dilatation is smaller than the full length of shear correlation. Specifically, ST-induced free volume has to be confined within the elastic shear domain of ST so that those STs can self-organize to trigger shear banding. This physical picture is directly visualized by tracing the real-space evolution of local dilatation and ST particles. The present work unites the two classical mechanisms: free volume and STs, for the fundamental understanding of shear banding in amorphous solids.
DOI	10.1103/PhysRevE.105.045003
收录类别	SCI ; EI
语种	英语
WOS记录号	WOS:000796375200012
关键词[WOS]	INHOMOGENEOUS FLOW ; DEFORMATION ; ORIGIN ; FIELD
WOS研究方向	Physics
WOS类目	Physics, Fluids & Plasmas ; Physics, Mathematical
资助项目	National Natural Science Foundation of China (NSFC)[11988102] ; NSFC National Outstanding Youth Science Fund Project[12125206] ; NSFC[51971047] ; NSFC[11972345] ; NSFC[11790292]
项目资助者	National Natural Science Foundation of China (NSFC) ; NSFC National Outstanding Youth Science Fund Project ; NSFC
论文分区	一类
力学所作者排名	1
RpAuthor	Lu, Y. Z.
引用统计	被引频次：7[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/311007/89421
专题	非线性力学国家重点实验室
作者单位	1.Chinese Acad Sci, Inst Mech, State Key Lab Nonlinear Mech, Beijing 100190, Peoples R China; 2.Dalian Jiaotong Univ, Sch Mat Sci & Engn, Dalian 116028, Peoples R China; 3.Univ Chinese Acad Sci, Sch Engn Sci, Beijing 100049, Peoples R China; 4.Chinese Acad Sci, Ningbo Inst Mat Technol & Engn, Ningbo 315201, Peoples R China; 5.Chinese Acad Sci, Inst Phys, Beijing 100190, Peoples R China
推荐引用方式 GB/T 7714	Wang XJ,Lu YZ,Lu X,et al. Elastic criterion for shear-banding instability in amorphous solids[J]. PHYSICAL REVIEW E,2022,105,4,:9.
APA	王晓娟.,Lu YZ.,Lu X.,Huo JT.,王云江.,...&蒋敏强.(2022).Elastic criterion for shear-banding instability in amorphous solids.PHYSICAL REVIEW E,105(4),9.
MLA	王晓娟,et al."Elastic criterion for shear-banding instability in amorphous solids".PHYSICAL REVIEW E 105.4(2022):9.

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