THERMOELASTIC DAMPING IN A MICRO-BEAM RESONATOR TUNABLE WITH PIEZOELECTRIC LAYERS

查看全文 作　　者：Armin Saeedi [1]Vahdat;Ghader [2]Rezazadeh;Goodarz [1]Ahmadi

机构地区：[1]Department of Mechanical & Aeronautical Engineering,Clarkson University;[2]Mechanical Engineering Department,Urmia University

出　　处：《Acta Mechanica Solida Sinica》索引2012年第25卷第1期,共9页

摘　　要：In this paper,thermoelastic damping (TED) in a micro-beam resonator with a pair of piezoelectric layers bonded on its upper and lower surfaces is investigated.Equation of motion is derived and the thermoelasticity equation is governed using two dimensional non-Fourier heat conduction model based on continuum theory frame.Applying Galerkin discretization method and complex-frequency approach to solve the equations of coupled thermoelasticity,we study TED of a clamped-clamped micro-beam resonator.The presented results demonstrate that thickness of the piezoelectric layers and application of DC voltage to them can affect the TED ratio and the critical thickness value of the resonator. 关键词：弹性阻尼谐振器压电层微束 GALERKIN 可调临界厚度热传导模型

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THERMOELASTIC DAMPING IN A MICRO-BEAM RESONATOR TUNABLE WITH PIEZOELECTRIC LAYERS

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