| 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
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| Source Publication | Computational Materials Science (IF:2.644[JCR-2018],2.668[5-Year]) |
| 2009 | |
| Volume | 46Issue:3Pages:723-727 |
| ISSN | 0927-0256 |
| Abstract | 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. |
| Keyword | Size Effect Surface Energy Elastic-plastic Analysis Single Crystals Micron Scale Nanowires Plasticity Stress Gold |
| DOI | 10.1016/j.commatsci.2009.03.014 |
| Indexed By | SCI |
| Language | 英语 |
| WOS ID | WOS:000270346300033 |
| WOS Keyword | MICRON SCALE ; NANOWIRES ; PLASTICITY ; STRESS ; GOLD |
| WOS Research Area | Materials Science |
| WOS Subject | Materials Science, Multidisciplinary |
| Citation statistics | |
| Document Type | 期刊论文 |
| Identifier | http://dspace.imech.ac.cn/handle/311007/33519 |
| Collection | 非线性力学国家重点实验室 |
| Corresponding Author | Wei YG |
| Recommended Citation 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. |
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