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. | |
发表期刊 | ACTA MECHANICA |
2016 | |
卷号 | 227期号:7页码:1799-1811 |
ISSN | 0001-5970 |
摘要 | 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 |
收录类别 | SCI ; EI |
语种 | 英语 |
WOS记录号 | WOS:000378775700001 |
WOS研究方向 | Mechanics |
WOS类目 | Mechanics |
项目资助者 | 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. |
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 |
力学所作者排名 | True |
引用统计 | |
文献类型 | 期刊论文 |
条目标识符 | http://dspace.imech.ac.cn/handle/311007/59510 |
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 | 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. |
条目包含的文件 | ||||||
文件名称/大小 | 文献类型 | 版本类型 | 开放类型 | 使用许可 | ||
a2016-010.pdf(1598KB) | 期刊论文 | 作者接受稿 | 开放获取 | CC BY-NC-SA | 浏览 请求全文 |
除非特别说明,本系统中所有内容都受版权保护,并保留所有权利。
修改评论