Pull-in behaviour of a micro switch actuated by the electrostatic under a uniform longitudinal magnetic field based on nonlocal couple stress theory | ||
| Journal of Computational Applied Mechanics | ||
| دوره 54، شماره 4، زمستان 2023، صفحه 577-587 اصل مقاله (624.27 K) | ||
| نوع مقاله: Research Paper | ||
| شناسه دیجیتال (DOI): 10.22059/jcamech.2023.364306.862 | ||
| نویسندگان | ||
| Mohsen Mahdavi Adeli1؛ Rouzbeh Mahmoudi2؛ Ahmad Soleimani* 3 | ||
| 1Department of Mechanical Engineering, Sousangerd Branch, Islamic Azad University, Sousangerd, Iran | ||
| 2Department of Mechanical Engineering, Yasouj University, Yasouj, Iran | ||
| 3Department of Mechanical Engineering, University of Jiroft, Jiroft, Iran | ||
| چکیده | ||
| 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. | ||
| کلیدواژهها | ||
| Pull-in؛ micro switch؛ nonlocal couple stress؛ magnetic field؛ Bernoulli-Euler | ||
| مراجع | ||
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آمار تعداد مشاهده مقاله: 575 تعداد دریافت فایل اصل مقاله: 2,661 |
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