Pull-In Phenomenon Investigation in Nonlinear Electromechanical Coupled System by Distributed Model Frequency Analysis Method

Sensors & Transducers

Fatemeh Abdolkarimzadeh¹  Ghader Rezazadeh¹  Ahmadali Tahmasebi-Moradi² 

[1] Mech. Eng. Dept. Urmia University, Urmia, Iran;Mech. Eng. Dept. Urmia University, Urmia, IranMech. Eng. Dept. Urmia University, Urmia, Iran;

关键词: MEMS;    Pull-In Phenomenon;    Perturbation;    Eigen frequency;    Stability;    Nonlinear;   

DOI  :  

来源: DOAJ

【 摘 要 】

In the present paper, a new approach for investigating pull-in phenomenon in nonlinear, electromechanical, multi-domain problems based on Eigen frequency analysis of perturbed motion about nominal equilibrium point has been developed. In order to study the stability of the system at the equilibrium position due to the applied voltage, the nonlinear equations of small flexural vibration about this position have been derived and linearized via Taylor expansion theory. The first Eigen frequency of the linearized perturbed motion has been calculated. It has been shown that the instability occurs when the Eigen frequency diverges to zero, while the pull-in phenomenon is divergence instability. To calculate the equilibrium position at given applied voltage a Step-by-Step linearization method has been used. The obtained results have been compared to other theoretical results, and good agreement is observed.

【 授权许可】

Unknown