FREE VIBRATION OF PIEZO-NANOWIRES USING TIMOSHENKO BEAM THEORY WITH CONSIDERATION OF SURFACE AND SMALL SCALE EFFECTS

被引：1
作者：
Oveisi, Atta [1 ]
机构：
[1] Iran Univ Sci & Technol, Sch Mech Engn, Tehran, Iran
来源：
ARCHIVE OF MECHANICAL ENGINEERING | 2014年 / 61卷 / 01期
关键词：
piezoceramic nanobeams; free vibrations; buckling; surface stress; non-local elasticity;
D O I：
10.2478/meceng-2014-0008
中图分类号：
TH [机械、仪表工业];
学科分类号：
0802 ;
摘要：
This paper investigates the influence of surface effects on free transverse vibration of piezoelectric nanowires (NWs). The dynamic model of the NW is tackled using nonlocal Timoshenko beam theory. By implementing this theory with consideration of both non-local effect and surface effect under simply support boundary condition, the natural frequencies of the NW are calculated. Also, a closed form solution is obtained in order to calculate fundamental buckling voltage. Finally, the effect of small scale effect on residual surface tension and critical electric potential is explored. The results can help to design piezo-NW based instruments.
引用
收藏
页码：139 / 152
页数：14
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