Investigation of Thermoelastic Damping in the Longitudinal Vibration of a MicroBeam

سال انتشار: 1393
نوع سند: مقاله ژورنالی
زبان: انگلیسی
مشاهده: 498

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شناسه ملی سند علمی:

JR_IJE-28-2_019

تاریخ نمایه سازی: 13 مرداد 1394

چکیده مقاله:

In the design of high Quality factor (Q) micro or nano beam resonators, different dissipation mechanismsmay have damaging effects on the quality factor. One of the major dissipation mechanisms is thethermoelastic damping (TED) that needs an accurate consideration for prediction. In this paper, TED ofthe longitudinal vibration of a homogeneous micro beam with both ends clamped have been investigated.A Galerkin method has been used to analyze TED for the first mode of vibration of the micro beam. Thenthe quality factor and longitudinal vibrations frequency are obtained. Changing of quality factor versusgeometrical properties and ambient temperature for different materials are plotted.

کلیدواژه ها:

Quality FactorThermoelastic DampingLongitudinal VibrationsCoupled EquationsGalerkin MethodNatural Frequency

نویسندگان

M Maroofi,

Mechanical Engineering Department, Urmia University, Urmia, Iran

S Najafi

Mechanical Engineering Department, Urmia University, Urmia, Iran

R Shabani

Mechanical Engineering Department, Urmia University, Urmia, Iran

G Rezazadeh

Mechanical Engineering Department, Urmia University, Urmia, Iran