在水中从肋骨硬化板进行单次和多次散射的分析溶液
Hesam Bakhtiary Yekta1, Andrew N Norris1
1Department of Mechanical & Aerospace Engineering, Rutgers University, Piscataway, New Jersey 08854, USA.
声波与水中的肋骨硬板 (柔性层) 相互作用,显示出独特的传输特性. 这些柔性层在特定频率上表现出完美的声传输,这是由于带有流体的板状波.
科学领域:
- 声学 声学 在声学上
- 材料科学 材料科学 材料科学
- 流体动力学 流体动力学
背景情况:
- 周期结构可以表现出独特的声学特性.
- 了解波浪与复杂边界的相互作用在声学中至关重要.
研究的目的:
- 分析声平面波浪与一种称为flex-layer的新型肋骨硬化结构的相互作用.
- 为了解释柔性层的低频和有限频的声学行为.
- 扩展模型以分析多个柔性层.
主要方法:
- 开发了用于反射和传输系数的闭式分析解决方案.
- 模拟了准静态行为作为相当的同质流体层.
- 研究了肋骨之间的带有液体载荷的板状波.
主要成果:
- 柔性层的低频响应主要由曲刚度主导,模仿可压缩的流体层.
- 完美的声学传输发生在离散的更高频率,由于特定的波浪现象.
- 分析模型准确地解释了观察到的声学行为.
结论:
- 柔性层在低频和高频时表现出不同的声学行为,由分析模型解释.
- 这种相互作用是由曲刚度和带有流体的板状波浪所控制的.
- 将模型扩展到多个层,揭示了新的低频和高频现象.
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