核-壳散射体的声共振分布
Acoustic Resonance Distribution for Core-Shell Scatterers
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中文总结 AI 辅助
本研究通过探究流体核-壳球的内部声能，得到两个预测关系以快速识别目标共振响应的材料与几何组合，相关框架经文献系统验证可用于共振核-壳单元的筛选定制。
中文摘要 AI 辅助
声学超材料可通过其组成单元中的能量局域化、共振行为等机制展现出非常规的有效性质。本研究探究流体核-壳球的内部声能，绘制共振如何从材料对比度与壳层几何的相互作用中产生。所得相图揭示了不同阻抗对比度区域内有序的共振分布。基于该结构，我们得到两个简洁的预测关系：一个用于判断共振是否存在，另一个用于描述连续共振峰的频谱重现性。二者结合可快速识别与目标共振响应相关的材料及几何组合。该框架已通过文献中的代表性系统验证，能复现其观测行为。这些结果为全波数值模拟前筛选和定制共振核-壳单元提供了基于物理的途径。
英文摘要
Acoustic metamaterials can exhibit unusual effective properties through mechanisms such as energy localization and resonant behavior in their constituent building blocks. Here, we investigate the internal acoustic energy of fluid core-shell spheres and map how resonances emerge from the interplay between material contrasts and shell geometry. The resulting phase diagram reveals an organized resonant landscape across distinct impedance-contrast regimes. From this structure, we obtain two compact predictive relations: one for resonance existence and another for spectral recurrence of successive peaks. Together, they enable the rapid identification of material and geometric combinations associated with targeted resonance responses. The framework is further tested against representative systems from the literature, reproducing their observed behavior. These results provide a physics-based route for screening and tailoring resonant core-shell building blocks before full-wave numerical simulations.
