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首页> 外文期刊>Applied Acoustics >Vibroacoustic response of stiffened thin plates to incident sound
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Vibroacoustic response of stiffened thin plates to incident sound

机译：加强薄板对入射声的植入响应

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摘要

A model was developed and applied for predicting the vibroacoustic response of stiffened plates excited by different incident sound fields. A relationship between the Joint Acceptance Function (JAF) and the modal radiation efficiency is derived. This allows for a direct calculation for both the vibration response and the sound transmission loss (TL) in the presence of a diffuse field whilst accounting for full vibroacoustic coupling. The response for different structural configurations, plane versus diffuse acoustic excitation and modelling approximations are highlighted, so presenting a systematic quantification of the factors influencing the vibroacoustic response. It is found that vibroacoustic coupling is enhanced by the presence of stiffeners, with the effects for different types of acoustic excitation and the contribution from the modal cross terms being most significant for the TL results. A coupled FE-BE numerical model of stiffened plate and other empirical formulae for unstiffened plate are subsequently used for the validation and verification of the proposed model. The results show that the computational cost of simulation can be significantly reduced with a small loss of accuracy when using the proposed model in comparison to the fully coupled FE-BE numerical model. (C) 2020 Elsevier Ltd. All rights reserved.
机译：开发了一种模型，用于预测不同入射声场激发的加强板的纵传响应。推导了关节验收功能（JAF）与模态辐射效率之间的关系。这允许在漫射领域的存在下，在弥漫的领域存在振动响应和声音传输损耗（TL），同时占纵向耦合。突出显示不同结构配置，平面与漫射声激励和建模近似的响应，因此提出了影响蛛旋回应的因素的系统量化。发现通过加强筋的存在增强了迁移偶联，具有不同类型的声激发的效果，以及从模态横向术语的贡献对于T1结果最显着。随后用于耦合的耦合Fe的硬化板和其他经验公式的数值模型，用于验证和验证所提出的模型。结果表明，当与完全耦合的FE的FE值数值模型相比，使用所提出的模型时，可以显着降低模拟计算成本。 （c）2020 elestvier有限公司保留所有权利。

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