Size effect in micro-scale cantilever beam bending

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	Size effect in micro-scale cantilever beam bending
	Chen SH(陈少华); Feng B
刊名	Acta Mechanica
	2011
通讯作者邮箱	chenshaohua72@hotmail.com
卷号	219 期号:3-4 页码:291-307
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
ISSN号	0001-5970
通讯作者	Chen, SH (reprint author), Chinese Acad Sci, Inst Mech, LNM, Beijing 100190, Peoples R China
产权排序	[Chen, SH; Feng, B] Chinese Acad Sci, Inst Mech, LNM, Beijing 100190, Peoples R China
中文摘要	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.
学科主题	Mechanics
分类号	二类
类目[WOS]	Mechanics
研究领域[WOS]	Mechanics
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
收录类别	SCI ; EI
资助信息	The work reported here is supported by NSFC through Grants #10972220, #10732050, and #11021262.
原文出处	http://dx.doi.org/10.1007/s00707-011-0461-7
语种	英语
WOS记录号	WOS:000291250400009
公开日期	2012-04-01
内容类型	期刊论文
源URL	[http://dspace.imech.ac.cn/handle/311007/44921]
专题	力学研究所_非线性力学国家重点实验室
推荐引用方式 GB/T 7714	Chen SH,Feng B. Size effect in micro-scale cantilever beam bending[J]. Acta Mechanica,2011,219(3-4):291-307.
APA	陈少华,&Feng B.(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.