Thermo-Elastic Dissipation of Microbeam Resonators in the Framework of Generalized Thermo-Elasticity Theory
作者： F. L. Guo
DOI: 10.1080/01495739.2013.818903
关键词: Beam (structure) 、 Aspect ratio (image) 、 Normal mode 、 Physics 、 Classical mechanics 、 Mechanics 、 Explicit formulae 、 Resonator 、 Dissipation 、 Phonon 、 Microbeam
摘要: Thermo-elastic dissipation of microbeam resonators is studied by the generalized thermo-elasticity theory Lord and Shulman's model. Explicit formulae thermo-elastic damping frequency shift have been derived. Influences beam height aspect ratio are examined. The thermal relaxation time determined Chester's formula, where phonon velocity replaced flexural wave in microbeam. Numerical results show that discrepancy between present non-Fourier classical ones increase with decrease resonator. For fixed ratios tends to from lower vibration modes higher modes.
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