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Free vibrations and stability of high-speed rotating carbon nanotubes partially resting on Winkler foundations

机译:部分位于Winkler基础上的高速旋转碳纳米管的自由振动和稳定性

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In the present study, free vibrations and stability of rotating single walled carbon nanotubes (SWCNT) is investigated by nonlocal theory of elasticity; while the CNT is partially resting on an elastic foundation. The governing equations of motion are presented by using Love's shell assumptions. An exact series expansion method of solution is employed and very accurate results are obtained. Some parameter studies including the effects of rotating speed, foundation stiffness, slenderness ratio and nonlocal parameter on the natural frequency and stability margins of the current model are studied. The studies show that rotation rates and foundation elasticity can contribute significantly in the dynamic characteristics of rotating MEMS devices. (C) 2015 Elsevier Ltd. All rights reserved.
机译:在本研究中,通过非局部弹性理论研究了旋转单壁碳纳米管(SWCNT)的自由振动和稳定性。而CNT则部分位于弹性基础上。使用Love的壳层假设来表示运动的控制方程。采用了精确的解级数展开方法,并获得了非常准确的结果。研究了一些参数研究,包括转速,地基刚度,细长比和非局部参数对当前模型的固有频率和稳定性裕度的影响。研究表明,旋转速率和基础弹性可以极大地影响旋转MEMS器件的动态特性。 (C)2015 Elsevier Ltd.保留所有权利。

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