Exact solutions for forced vibration of completely free orthotropic rectangular nanoplates resting on viscoelastic foundation

Exact solutions for forced vibration of completely free orthotropic rectangular nanoplates resting on viscoelastic foundation
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粘弹性基础上完全自由正交各向异性矩形纳米板受迫振动的精确解

DOI:
10.1016/j.euromechsol.2018.06.007
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发表时间:
2019
期刊:
European Journal of Mechanics - A: Solids
影响因子:
--
通讯作者:
Xu Xinsheng
Xu Xinsheng
中科院分区:
其他
文献类型:
--
作者:
Fan Junhai;Rong Dalun;Zhou Zhenhuan;Xu Chenghui;Xu Xinsheng

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利用解析哈密顿方法,得到了粘弹性地基上完全自由正交各向异性矩形纳米板受迫振动的精确解。采用Eringen的非定域理论来考虑小尺寸效应。在本方法中,通过引入一个新的总未知向量,建立了正交各向异性矩形纳米板振动的哈密顿系统。振动分析归结为辛空间中的特征值问题。完全自由的纳米板的封闭形式的解决方案,通过使用引导支持的纳米板的解决方案和边界的叠加。数值算例包括比较研究,以说明所提出的方法的效率和精度。详细的参数研究和一些新的结果也提供。
Exact solutions for forced vibration of completely free orthotropic rectangular nanoplates resting on viscoelastic foundations are obtained by an analytical Hamiltonian-based method. Eringen's nonlocal theory is employed to take into account the small size effect. In the present method, a Hamiltonian system for the vibration of the orthotropic rectangular nanoplate is established by introducing a new total unknown vector. The vibration analysis is reduced to an eigenproblem in the symplectic space. Closed-form solutions of the completely free nanoplate are derived by using the solution of a guided supported nanoplate and a superposition of boundaries. Numerical examples including comparison studies are presented to illustrate the efficiency and accuracy of the proposed method. A detailed parametric study and some new results are provided also.
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