微孔和大孔穿孔板声传输损失的正常入射

Q2 Physics and Astronomy

Advances in Acoustics and Vibration Pub Date : 2014-04-17 DOI:10.1155/2014/534569

A. Putra, A. Y. Ismail

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引用次数: 10

摘要

本文研究了穿孔板的传声损失，探讨了在正入射声载荷作用下，孔直径对穿孔板隔声性能的影响。孔径分为微(亚毫米)和宏(毫米)两种。一般情况下，随着射孔比的增大，传输损耗减小。然而，在保持射孔比不变的情况下，由于孔阻抗中电阻部分的影响，微孔射孔随着孔径的减小传输损耗增大，与大孔射孔的结果相反。在高频处，两者表现出相似的趋势，其中孔内流体行为为惯性。给出了简单的工程解析公式。用实测数据验证了模型的正确性。

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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Normal Incidence Of Sound Transmission Loss From Perforated Plates With Micro And Macro Size Holes

his paper studies the sound transmission loss of perforated panels and investigates the efect of the hole diameter on the sound insulation performance under normal incidence of acoustic loading. he hole diameters are distinguished into micro (submillimeter) and macro (millimeter) sizes. In general, the transmission loss reduces as the perforation ratio is increased. However, by retaining the perforation ratio, it is found that the transmission loss increases as the hole diameter is reduced for a perforate with micro holes due to the efect of resistive part in the hole impedance, which is contrary to the results for those with the macro holes. Both show similar trend at high frequency where the luid behavior inside the hole is inertial. Simple analytical formulae for engineering purpose are provided. Validation of the models with measurement data also gives good agreement.

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来源期刊

Advances in Acoustics and Vibration ACOUSTICS-

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期刊介绍： The aim of Advances in Acoustics and Vibration is to act as a platform for dissemination of innovative and original research and development work in the area of acoustics and vibration. The target audience of the journal comprises both researchers and practitioners. Articles with innovative works of theoretical and/or experimental nature with research and/or application focus can be considered for publication in the journal. Articles submitted for publication in Advances in Acoustics and Vibration must neither have been published previously nor be under consideration elsewhere. Subject areas include (but are not limited to): Active, semi-active, passive and combined active-passive noise and vibration control Acoustic signal processing Aero-acoustics and aviation noise Architectural acoustics Audio acoustics, mechanisms of human hearing, musical acoustics Community and environmental acoustics and vibration Computational acoustics, numerical techniques Condition monitoring, health diagnostics, vibration testing, non-destructive testing Human response to sound and vibration, Occupational noise exposure and control Industrial, machinery, transportation noise and vibration Low, mid, and high frequency noise and vibration Materials for noise and vibration control Measurement and actuation techniques, sensors, actuators Modal analysis, statistical energy analysis, wavelet analysis, inverse methods Non-linear acoustics and vibration Sound and vibration sources, source localisation, sound propagation Underwater and ship acoustics Vibro-acoustics and shock.