SMALL SCALE EFFECT ON THE DYNAMIC PULL-IN INSTABILITY OF TORSIONAL NANO-ACTUATORS USING 2-DOF MODEL

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MALIHI SOROOSH; TADI BENI YAGHOUB

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Journal: Modares Mechanical Engineering Year:2016 | Volume:16 | Issue:5 Page(s): 90-100

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Title

SMALL SCALE EFFECT ON THE DYNAMIC PULL-IN INSTABILITY OF TORSIONAL NANO-ACTUATORS USING 2-DOF MODEL

Author(s)

MALIHI SOROOSH | TADI BENI YAGHOUB | Issue Writer Certificate

Keywords

TORSIONAL ELECTROSTATIC MICROMIRRORQ1

DYNAMIC PULL-IN INSTABILITYQ1

MODIFIED COUPLE STRESS THEORYQ1

PHASE PORTRAITSQ1

STABLE AND UNSTABLE EQUILIBRIUM POINTSQ1

Abstract

Consideration of dynamic and static behavior of structures in nano and micro scale for analysis and prediction of their performance and accuracy has become more important. In this study, the effect of size and intermolecular van der Waals force on dynamic behavior of torsional nanomirror considering bending-torsion two degree of freedom model using the higher order MODIFIED COUPLE STRESS THEORY has been investigated. First, by considering the higher order MODIFIED COUPLE STRESS THEORY and intermolecular van der Waals force, equation of motion of system is developed, afterwards using Runge-Kutta method, this equations is solved and dynamic performance of nanomirror and its PHASE PORTRAITS have been obtained. Also, translational and torsional natural frequencies of system considering applied voltage are investigated. So pull-in instability parameters of system are considered and their dependency upon van der Waals force and size effects are determined. Results demonstrate that equilibrium points of system include center points and focus points and PHASE PORTRAITS related to these points exhibit periodic orbits and heteroclinic orbits. Moreover, size effect and modified couple stress model on amplitude and frequency of vibration of system have been investigated. Proposed model in this study is able to predict experimental results with higher precision than previous classic models and reduce the difference between past theories and empirical results.

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APA: Copy

MALIHI, SOROOSH, & TADI BENI, YAGHOUB. (2016). SMALL SCALE EFFECT ON THE DYNAMIC PULL-IN INSTABILITY OF TORSIONAL NANO-ACTUATORS USING 2-DOF MODEL. MODARES MECHANICAL ENGINEERING, 16(5), 90-100. SID. https://sid.ir/paper/177935/en

Vancouver: Copy

MALIHI SOROOSH, TADI BENI YAGHOUB. SMALL SCALE EFFECT ON THE DYNAMIC PULL-IN INSTABILITY OF TORSIONAL NANO-ACTUATORS USING 2-DOF MODEL. MODARES MECHANICAL ENGINEERING[Internet]. 2016;16(5):90-100. Available from: https://sid.ir/paper/177935/en

IEEE: Copy

SOROOSH MALIHI, and YAGHOUB TADI BENI, “SMALL SCALE EFFECT ON THE DYNAMIC PULL-IN INSTABILITY OF TORSIONAL NANO-ACTUATORS USING 2-DOF MODEL,” MODARES MECHANICAL ENGINEERING, vol. 16, no. 5, pp. 90–100, 2016, [Online]. Available: https://sid.ir/paper/177935/en

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