| Buckling behavior of nanowires predicted by a new surface energy density model | |
Yao Y(姚寅) ; Chen SH(陈少华); Chen, SH (reprint author), Chinese Acad Sci, Inst Mech, LNM, Beijing 100190, Peoples R China.
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| Source Publication | ACTA MECHANICA
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| 2016 | |
| Volume | 227Issue:7Pages:1799-1811 |
| ISSN | 0001-5970 |
| Abstract | The axial buckling behavior of nanowires is investigated with a new continuum theory, in which the surface effect of nanomaterials is characterized by the surface energy density. Only the surface energy density of bulk materials and the surface relaxation parameter are involved, instead of the surface elastic constants in the classical surface elasticity theory. Two kinds of nanowires with different boundary conditions are discussed. It is demonstrated that the new continuum theory can predict the buckling behavior of nanowires very well. Similar to the prediction of the classical elasticity theory, the critical compressive load of axial buckling of nanowires predicted by the new continuum theory increases with an increasing characteristic length, such as the diameter or height of nanowires. With the same aspect ratio, a nanowire with a rectangular cross section possesses a larger critical buckling load than that with a circular one. However, the surface effect could enhance the critical buckling load not only for a fixed-fixed nanowire but also for a cantilevered one in contrast to the classical elastic model. All the results predicted by the new continuum theory agree well with predictions by the surface elasticity models. The present research not only verifies the validation of the new continuum theory, but also gives a much more convenient characterization of buckling behaviors of nanowires. This should be helpful for the design of nanodevices based on nanomaterials, for example, nanobeams in NEMS or high-precision instruments. |
| DOI | 10.1007/s00707-016-1597-2 |
| URL | 查看原文 |
| Indexed By | SCI ; EI |
| Language | 英语 |
| WOS ID | WOS:000378775700001 |
| WOS Research Area | Mechanics |
| WOS Subject | Mechanics |
| Funding Organization | The work reported here is supported by NSFC by Grants #11372317, #11125211, #11402270, the Nanoproject (2012CB937500) and the CAS/SAFEA International Partnership Program for Creative Research Teams. |
| Department | LNM仿生材料与固体的微尺度力学 |
| Classification | 二类 |
| Ranking | True |
| Citation statistics | |
| Document Type | 期刊论文 |
| Identifier | http://dspace.imech.ac.cn/handle/311007/59510 |
| Collection | 非线性力学国家重点实验室 |
| Corresponding Author | Chen, SH (reprint author), Chinese Acad Sci, Inst Mech, LNM, Beijing 100190, Peoples R China. |
| Recommended Citation GB/T 7714 | Yao Y,Chen SH,Chen, SH . Buckling behavior of nanowires predicted by a new surface energy density model[J]. ACTA MECHANICA,2016,227(7):1799-1811. |
| APA | 姚寅,陈少华,&Chen, SH .(2016).Buckling behavior of nanowires predicted by a new surface energy density model.ACTA MECHANICA,227(7),1799-1811. |
| MLA | 姚寅,et al."Buckling behavior of nanowires predicted by a new surface energy density model".ACTA MECHANICA 227.7(2016):1799-1811. |
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| a2016-010.pdf（1598KB） | 期刊论文 | 作者接受稿 | 开放获取 | CC BY-NC-SA | View Download | |
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