Size effect in micro-scale cantilever beam bending

doi:10.1007/s00707-011-0461-7

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	Size effect in micro-scale cantilever beam bending
	Chen SH(陈少华); Feng B; Chen, SH (reprint author), Chinese Acad Sci, Inst Mech, LNM, Beijing 100190, Peoples R China
发表期刊	Acta Mechanica
	2011
卷号	219 期号:3-4 页码:291-307
ISSN	0001-5970
摘要	When the thickness of metallic cantilever beams reduces to the order of micron, a strong size effect of mechanical behavior has been found. In order to explain the size effect in a micro-cantilever beam, the couple-stress theory (Fleck and Hutchinson, J Mech Phys Solids 41:1825-1857, 1993) and the C-W strain gradient theory (Chen and Wang, Acta Mater 48:3997-4005, 2000) are used with the help of the Bernoulli-Euler beam model. The cantilever beam is considered as the linear elastic and rigid-plastic one, respectively. Analytical results of the cantilever beam deflection under strain gradient effects by applying these two kinds of theories are obtained, from which we find an explicit relationship between the intrinsic lengths introduced in the two kinds of theories. The theoretical results are further used to analyze the experimental observations, and predictions by both theories are further compared. The results in the present paper should be useful for the design of micro-cantilever beams in MEMS and NEMS.
关键词	Strain-gradient Plasticity Metal-matrix Composites Length Scale Parameter Couple Stress Theory Mechanical-properties Crystal Plasticity Single-crystals Lower-order Thin-films Indentation Hardness
学科领域	Mechanics
DOI	10.1007/s00707-011-0461-7
URL	查看原文
收录类别	SCI ; EI
语种	英语
WOS记录号	WOS:000291250400009
关键词[WOS]	STRAIN-GRADIENT PLASTICITY ; METAL-MATRIX COMPOSITES ; LENGTH SCALE PARAMETER ; COUPLE STRESS THEORY ; MECHANICAL-PROPERTIES ; CRYSTAL PLASTICITY ; SINGLE-CRYSTALS ; LOWER-ORDER ; THIN-FILMS ; INDENTATION HARDNESS
WOS研究方向	Mechanics
WOS类目	Mechanics
项目资助者	The work reported here is supported by NSFC through Grants #10972220, #10732050, and #11021262.
课题组名称	LNM仿生材料与固体的微尺度力学
论文分区	二类
引用统计	被引频次：53[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/311007/44921
专题	非线性力学国家重点实验室
通讯作者	Chen, SH (reprint author), Chinese Acad Sci, Inst Mech, LNM, Beijing 100190, Peoples R China
推荐引用方式 GB/T 7714	Chen SH,Feng B,Chen, SH . Size effect in micro-scale cantilever beam bending[J]. Acta Mechanica,2011,219,3-4,:291-307.
APA	陈少华,Feng B,&Chen, SH .(2011).Size effect in micro-scale cantilever beam bending.Acta Mechanica,219(3-4),291-307.
MLA	陈少华,et al."Size effect in micro-scale cantilever beam bending".Acta Mechanica 219.3-4(2011):291-307.

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