Transient sound radiation from a clamped circular plate with viscoelastic layers
作者:
Jae‐Jin Jeon,
Byung‐Ho Lee,
期刊:
The Journal of the Acoustical Society of America
(AIP Available online 1987)
卷期:
Volume 82,
issue 3
页码: 937-945
ISSN:0001-4966
年代: 1987
DOI:10.1121/1.395292
出版商: Acoustical Society of America
关键词: PLATES;CIRCULAR CONFIGURATION;TRANSIENTS;MECHANICAL VIBRATIONS;NORMAL−MODE ANALYSIS;EIGENVALUES;LAYERS;IMPACT PHENOMENA;VISCOELASTICITY;SOUND FIELDS
数据来源: AIP
摘要:
In this article, the transient sound radiation from a clamped circular plate with a viscoelastic layer excited by impact is studied analytically and experimentally. The composite plate vibrations are obtained by using the normal mode analysis and the eigenvalues are obtained by a Mindlin plate theory, including the rotary inertia and shear deformation. In impact, the contact force developed between the ball and the plate with attached layers is obtained by Hertz contact theory. The radiated sound pressure in the farfield is calculated by the Rayleigh integral. Prediction of the waveforms of sound radiating from the plate with attached layers and a method for reducing noise generation from the plate by impact force are also shown in this article. The analytical results can be applicable to multilayered plate and noncentral impacted cases. Using the results of this article, the thickness of an attached viscoelastic layer to reduce the noise to the desired level can be decided.
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