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首页> 外文期刊>Journal of Physics, D. Applied Physics: A Europhysics Journal >Elasto-dynamic analysis of spinning nanodisks via a surface energy-based model
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Elasto-dynamic analysis of spinning nanodisks via a surface energy-based model

机译：基于表面能量的模型的纺丝纳米型纺丝的弹性动态分析

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Using the surface elasticity theory of Gurtin and Murdoch, in-plane vibrations of annular nanodisks due to their rotary motion are explored. By the imposition of non-classical boundary conditions on the innermost and outermost surfaces and employing Hamilton's principle, the unknown elasto-dynamic fields of the bulk zone are determined via the finite element method. The roles of both nanodisk geometry and surface effect on the natural frequencies are addressed. Subsequently, forced vibrations of spinning nanodisks with fixed-free and free-free boundary conditions are comprehensively examined. The obtained results show that the maximum dynamic elastic fields grow in a parabolic manner as the steady angular velocity increases. By increasing the outermost radius, the maximum dynamic elastic field is magnified and the influence of the surface effect on the results reduced. This work can be considered as a pivotal step towards optimal design and dynamic analysis of nanorotors with disk-like parts, which are one of the basic building blocks of the upcoming advanced nanotechnologies.
机译：利用Gurtin和Murdoch的表面弹性理论，探讨了由于其旋转运动引起的环形纳米型面内振动。通过在最内层和最外表面上施加非古典边界条件并采用汉密尔顿原理，通过有限元方法确定散装区的未知弹性动态场。纳米磁盘几何形状和表面效应对自然频率的作用是解决的。随后，综合地检查了具有无固定和无自由边界条件的纺丝纳米型的强制振动。所得结果表明，随着稳定角速度的增加，最大动态弹性场以抛物线方式生长。通过增加最外半径，最大动态弹性场被放大，并且表面效应对结果的影响降低。这项工作可以被认为是朝向具有磁盘状部件的纳米电泵的最佳设计和动态分析的关键步骤，这是即将到来的先进纳米技术的基本构建块之一。

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