Pull-in behaviour of a micro switch actuated by the electrostatic under a uniform longitudinal magnetic field based on nonlocal couple stress theory
Publish Year: 1402
نوع سند: مقاله ژورنالی
زبان: English
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شناسه ملی سند علمی:
JR_JCAM-54-4_007
تاریخ نمایه سازی: 11 دی 1402
Abstract:
Today the micro electromechanical systems industry is widely developed. This article aims to study static pull-in instability of a clamped micro-switch which is exerted by an electric potential difference in presence of a longitudinal magnetic field. The size dependent nonlocal couple stress theory in framework of Bernoulli-Euler beam hypothesis is utilized to model a clamped micro-switch. The equilibrium equation of micro-beam in micro-switch is derived using the principle of virtual work. To obtain the dimensionless pull-in voltage of micro-switch, the equilibrium equation is solved by Galerkin method. The effect of longitudinal magnetic field and some geometric parameter of micro-beam on the pull-in voltage is studied, taking into account the effects of a set of size dependent factors with and without considering the fringing field. The results from developed model are validated by comparing them with benchmark results.
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Authors
Mohsen Mahdavi Adeli
Department of Mechanical Engineering, Sousangerd Branch, Islamic Azad University, Sousangerd, Iran
Rouzbeh Mahmoudi
Department of Mechanical Engineering, Yasouj University, Yasouj, Iran
Ahmad Soleimani
Department of Mechanical Engineering, University of Jiroft, Jiroft, Iran
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