Based on the coupled acoustic scattering of two neighboring fluid-filled thin elastic shells suspending in an unbounded viscous liquid, an analytical method has been developed to calculate the acoustic radiation force (ARF) of the shells. Two physical effects are taken into account:elastic radiation scattering and the multiple interactions of shells. Numerical results have revealed that the magnitude of ARF could be enhanced by the sound radiation from the elastic shell undergoing forced vibrations and two resonant peaks could be observed on the ARF function curves. The feature of the lower peak is determined by the interactions and acoustic response of the back shell. The attractive forces could be obtained in the low kR 1 band for the cases of radii ratio R 2/R 1>1, while the magnitude of ARF at the lower peak may be influenced to some extent by acoustic shielding phenomenon for the cases of radii ratio R 2/R 1<1. Accordingly, the interactions of particles cannot be ignored. The results may provide a theoretical basis for precision manipulation of multiple particle systems.

中文翻译：

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液体中薄弹性壳上的声辐射力

基于悬浮在无界粘性液体中的两个相邻的充满流体的薄弹性壳的耦合声散射，开发了一种分析方法来计算壳的声辐射力 (ARF)。考虑了两种物理效应：弹性辐射散射和壳的多重相互作用。数值结果表明，弹性壳受迫振动的声辐射可以增强 ARF 的大小，并且在 ARF 函数曲线上可以观察到两个共振峰。下峰的特征由后壳的相互作用和声学响应决定。对于半径比 R 2/R 1>1 的情况，可以在低 kR 1 波段获得吸引力，而在半径比R 2/R 1 <1的情况下，ARF在较低峰值处的大小可能受到声屏蔽现象的一定程度的影响。因此，不能忽略粒子的相互作用。研究结果可为多粒子系统的精密操控提供理论依据。