A surface energy model and application to mechanical behavior analysis of single crystals at sub-micron scale

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	A surface energy model and application to mechanical behavior analysis of single crystals at sub-micron scale
	Chen XL(陈小亮); Ma HS(马寒松); Liang LH(梁立红); Wei YG(魏悦广); Wei YG
刊名	Computational Materials Science
	2009
通讯作者邮箱	Ywei@LNM.imech.ac.cn
卷号	46 期号:3 页码:723-727
关键词	Size Effect Surface Energy Elastic-Plastic Analysis Single Crystals Micron Scale Nanowires Plasticity Stress Gold
ISSN号	0927-0256
通讯作者	Wei YG
中文摘要	Size effects of mechanical behaviors of materials are referred to the variation of the mechanical behavior due to the sample sizes changing from macroscale to micro-/nanoscales. At the micro-/nanoscale, since sample has a relatively high specific surface area (SSA) (ratio of surface area to volume), the surface although it is often neglected at the macroscale, becomes prominent in governing the energy effect, although it is often neglected at the macroscale, becomes prominent in governing the mechanical behavior. In the present research, a continuum model considering the surface energy effect is developed through introducing the surface energy to total potential energy. Simultaneously, a corresponding finite element method is developed. The model is used to analyze the axial equilibrium strain problem for a Cu nanowire at the external loading-free state. As another application of the model, from dimensional analysis, the size effects of uniform compression tests on the microscale cylinder specimens for Ni and Au single crystals are analyzed and compared with experiments in literatures. (C) 2009 Elsevier B.V. All rights reserved.
类目[WOS]	Materials Science, Multidisciplinary
研究领域[WOS]	Materials Science
关键词[WOS]	MICRON SCALE ; NANOWIRES ; PLASTICITY ; STRESS ; GOLD
收录类别	SCI
语种	英语
WOS记录号	WOS:000270346300033
公开日期	2009-08-03 ; 2010-06-03
内容类型	期刊论文
源URL	[http://dspace.imech.ac.cn/handle/311007/33519]
专题	力学研究所_非线性力学国家重点实验室
通讯作者	Wei YG
推荐引用方式 GB/T 7714	Chen XL,Ma HS,Liang LH,et al. A surface energy model and application to mechanical behavior analysis of single crystals at sub-micron scale[J]. Computational Materials Science,2009,46(3):723-727.
APA	陈小亮,马寒松,梁立红,魏悦广,&Wei YG.(2009).A surface energy model and application to mechanical behavior analysis of single crystals at sub-micron scale.Computational Materials Science,46(3),723-727.
MLA	陈小亮,et al."A surface energy model and application to mechanical behavior analysis of single crystals at sub-micron scale".Computational Materials Science 46.3(2009):723-727.