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Similitude laws for the sound radiation of flat orthotropic flexural panels
Journal of Sound and Vibration ( IF 4.7 ) Pub Date : 2020-12-01 , DOI: 10.1016/j.jsv.2020.115636
Alain Berry , Olivier Robin , Francesco Franco , Sergio De Rosa , Giuseppe Petrone

Abstract Similitude laws in vibro-acoustics are potentially interesting to extrapolate measurements performed on small structures to the response of larger structures. This paper examines similitude laws for the vibroacoustic response of flat orthotropic flexural rectangular panels radiating sound in a semi-infinite light fluid medium. The scaling parameters considered are the panel size and thickness, its material properties (mass density, elastic moduli) and the properties of the acoustic medium (mass density, sound speed). It is shown that, while no general similarity laws exist for the near-field acoustic radiation, such laws exist for the case of far-field acoustic radiation. Acoustic directivity measurements performed on various isotropic panels confirm the vibroacoustic scaling laws derived theoretically.

中文翻译:

平面正交各向异性弯曲板声辐射的相似定律

摘要 振动声学中的相似定律对于将在小结构上进行的测量外推到较大结构的响应具有潜在的意义。本文研究了平面正交各向异性弯曲矩形面板在半无限轻流体介质中辐射声音的振动声学响应的相似规律。考虑的缩放参数是面板尺寸和厚度、其材料特性(质量密度、弹性模量)和声学介质的特性(质量密度、声速)。结果表明,虽然对于近场声辐射不存在一般的相似性规律,但对于远场声辐射的情况存在这样的规律。在各种各向同性面板上进行的声学方向性测量证实了理论上推导出的振动声学标度定律。
更新日期:2020-12-01
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