Efficient finite element modeling of radiation forces on elastic particles of arbitrary size and geometry
Efficient finite element modeling of radiation forces on elastic particles of arbitrary size and geometry
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DOI：
10.1121/1.4794393
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发表时间：
2013-04-01
影响因子：
2.4
通讯作者：
Hill, Martyn
中科院分区：
文献类型：
--
作者：
Glynne-Jones, Peter;Mishra, Puja P.;Hill, Martyn
本文提出了一种基于有限元的方法，用于计算任意形状的弹性和流体颗粒上的声辐射力。对于未来的应用来说，重要的是，这一发展将允许对生物细胞等复杂结构上的声学力进行建模，以及它们与其他物体之间的相互作用。该模型是基于一个非粘性近似，允许从一个有效的，数值的，线性散射模型的结果提供的二阶力的基础。对于轴对称结构，模拟时间为几秒的量级。该模型进行了验证，对现有的分析解决方案的范围（典型的精度优于0.1%），包括圆柱体，弹性球的显着尺寸相比，声波波长，和球状颗粒。(C)2013年美国声学学会。
A finite element based method is presented for calculating the acoustic radiation force on arbitrarily shaped elastic and fluid particles. Importantly for future applications, this development will permit the modeling of acoustic forces on complex structures such as biological cells, and the interactions between them and other bodies. The model is based on a non-viscous approximation, allowing the results from an efficient, numerical, linear scattering model to provide the basis for the secondorder forces. Simulation times are of the order of a few seconds for an axi-symmetric structure. The model is verified against a range of existing analytical solutions (typical accuracy better than 0.1%), including those for cylinders, elastic spheres that are of significant size compared to the acoustic wavelength, and spheroidal particles. (C) 2013 Acoustical Society of America.