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首页> 外文期刊>Journal of thermal stresses >THERMOELASTIC DAMPING AND FREQUENCY SHIFT IN MICRO/NANOSCALE ANISOTROPIC BEAMS
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THERMOELASTIC DAMPING AND FREQUENCY SHIFT IN MICRO/NANOSCALE ANISOTROPIC BEAMS

机译：微/纳米各向异性梁的热弹性阻尼和频率漂移

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摘要

The governing equations offlexural vibrations in a transversely isotropic thermoelastic beam are derived in closed form based on Euler-Bernoulli theory. The out-of- plane vibrations have been studied under different beam dimensions and boundary conditions. The analytical expressions for thermoelastic damping and frequency shift of vibrations are obtained. The damping and frequency shift of beam vibrations significantly depend on thermal relaxation time and surface conditions at resonance. The expressions for displacement and temperature fields in the beam resonator are obtained. Some numerical results with help of MAT LAB software have been computed and presented graphically for silicon material beams.
机译：基于欧拉-伯努利理论，以闭合形式导出了横观各向同性热弹性梁中挠曲振动的控制方程。在不同的光束尺寸和边界条件下，已经研究了平面外振动。得到了热弹性阻尼和振动频移的解析表达式。光束振动的阻尼和频移在很大程度上取决于共振时的热弛豫时间和表面条件。得到了射束谐振器中位移和温度场的表达式。借助MAT LAB软件，已计算出一些数值结果，并以图形方式显示了硅材料束。

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