Acoustic and vibration characteristics of finite-sized corrugated-core sandwich plate under flow-induced vibration

IF 2.1 3区物理与天体物理 Q2 ACOUSTICS

Wave Motion Pub Date : 2024-06-21 DOI:10.1016/j.wavemoti.2024.103376

Ye Li , YuMei Zhang , RuiQian Wang , Zhao Tang

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Abstract

This study presents a mathematical model of transmission loss (TL) for finite-sized corrugated-core sandwich panels subjected to aerodynamic pressure. The aerodynamic pressure is calculated using a cross-power spectral density function. The propagation of sound waves within a corrugated sandwich-panel structure is described using the wave propagation method. The corrugated-stiffened panel is equivalently represented using translational and rotational springs. Fluid‒structure coupling is considered by enforcing interface velocity continuity conditions at the fluid‒solid interface. A modal superposition method is used to establish the dynamic equations of the corrugated-core sandwich panel. The velocity response, radiated power, and TL of the corrugated-core sandwich panel are obtained by solving dynamic equations. A mathematical model is employed to investigate the acoustic characteristics of corrugated-core sandwich panels. Subsequently, the distinctions in the TL of a corrugated sandwich panel under acoustic and aerodynamic pressures (turbulence) are discussed. The influences of the flow velocity, corrugated-core sandwich-panel thickness, and corrugated-stiffener angle on the TL performance of the panel are investigated. This analysis contributes to a deeper understanding of the acoustic design of corrugated-core sandwich panels.

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有限尺寸波纹芯夹层板在流动诱导振动下的声学和振动特性

本研究介绍了有限尺寸波纹芯材夹芯板在空气动力压力作用下的传输损耗（TL）数学模型。空气动力压力是通过交叉功率谱密度函数计算得出的。使用波传播方法描述了声波在波纹夹芯板结构中的传播。采用平移和旋转弹簧等效表示波纹加固板。通过在流固界面强制执行界面速度连续性条件来考虑流固耦合。模态叠加法用于建立波纹芯夹芯板的动态方程。通过求解动态方程，可以得到波纹芯夹芯板的速度响应、辐射功率和 TL。采用数学模型研究了瓦楞芯夹芯板的声学特性。随后，讨论了波纹芯夹芯板在声压和气动压力（湍流）下的 TL 区别。研究了流速、波纹芯材夹芯板厚度和波纹加强筋角度对夹芯板 TL 性能的影响。该分析有助于加深对波纹芯夹芯板声学设计的理解。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Wave Motion 物理-力学

CiteScore

4.10

自引率

8.30%

发文量

118

审稿时长

3 months

期刊介绍： Wave Motion is devoted to the cross fertilization of ideas, and to stimulating interaction between workers in various research areas in which wave propagation phenomena play a dominant role. The description and analysis of wave propagation phenomena provides a unifying thread connecting diverse areas of engineering and the physical sciences such as acoustics, optics, geophysics, seismology, electromagnetic theory, solid and fluid mechanics. The journal publishes papers on analytical, numerical and experimental methods. Papers that address fundamentally new topics in wave phenomena or develop wave propagation methods for solving direct and inverse problems are of interest to the journal.