Pull-in instability analyses for NEMS actuators with quartic shape approximation

被引：0
|
作者：
Junsheng DUAN [1 ]
Zongxue LI [2 ]
Jinyuan LIU [3 ]
机构：
[1] School of Sciences, Shanghai Institute of Technology
[2] College of Computer and Information, Inner Mongolia Medical University
[3] Department of Information Management, Party School of the Inner Mongolia Committee of the Communist Party of China
来源：
Applied Mathematics and Mechanics(English Edition) | 2016年 / 37卷 / 03期
基金：
上海市自然科学基金; 中国国家自然科学基金;
关键词：
micro-electromechanical system(MEMS); nano-electromechanical system(NEMS); Casimir force; pull-in instability; quartic shape function;
D O I：
暂无
中图分类号：
TH-39 [机电一体化]; TH703 [结构];
学科分类号：
080202 ; 0804 ; 080401 ; 080805 ; 0811 ; 081102 ;
摘要：
The pull-in instability of a cantilever nano-actuator model incorporating the effects of the surface, the fringing field, and the Casimir attraction force is investigated.A new quartic polynomial is proposed as the shape function of the beam during the deflection, satisfying all of the four boundary values. The Gaussian quadrature rule is used to treat the involved integrations, and the design parameters are preserved in the evaluated formulas. The analytic expressions are derived for the tip deflection and pull-in parameters of the cantilever beam. The micro-electromechanical system(MEMS)cantilever actuators and freestanding nano-actuators are considered as two special cases.It is proved that the proposed method is convenient for the analyses of the effects of the surface, the Casimir force, and the fringing field on the pull-in parameters.
引用
收藏
页码：303 / 314
页数：12
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