An approach on the prediction of sound transmission loss for a finite sandwich panel with honeycomb core is described in the paper. The sandwich panel is treated as orthotropic and the apparent bending stiffness in two principal directions is estimated by means of simple tests on beam elements cut from the sandwich panel. Utilizing orthotropic panel theory, together with the obtained bending stiffness in two directions, the sound transmission loss of simply-supported sandwich panel is predicted by the modal expansion method. Simulation results indicated that dimension, orthotropy, and loss factor may play important roles on sound transmission loss of sandwich panel. The predicted transmission loss is compared with measured data and the agreement is reasonable. This approach may provide an efficient tool to predict the sound transmission loss of finite sandwich panels.
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Institute of Acoustics,
Chinese Academy of Sciences,
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December 2013
Research-Article
Prediction of Sound Transmission Loss for Finite Sandwich Panels Based on a Test Procedure on Beam Elements
Bilong Liu,
Bilong Liu
1
e-mail: liubl@mail.ioa.ac.cn
1Corresponding author.
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Ke Liu
Institute of Acoustics,
Chinese Academy of Sciences,
Ke Liu
Key Laboratory of Noise and Vibration Research
,Institute of Acoustics,
Chinese Academy of Sciences,
Beijing 100190
, China
Search for other works by this author on:
Bilong Liu
e-mail: liubl@mail.ioa.ac.cn
Ke Liu
Key Laboratory of Noise and Vibration Research
,Institute of Acoustics,
Chinese Academy of Sciences,
Beijing 100190
, China
1Corresponding author.
Contributed by the Design Engineering Division of ASME for publication in the Journal of Vibration and Acoustics. Manuscript received September 4, 2012; final manuscript received January 7, 2013; published online June 19, 2013. Assoc. Editor: Thomas J. Royston.
J. Vib. Acoust. Dec 2013, 135(6): 061005 (9 pages)
Published Online: June 19, 2013
Article history
Received:
September 4, 2012
Revision Received:
January 7, 2013
Citation
Qian, Z., Chang, D., Liu, B., and Liu, K. (June 19, 2013). "Prediction of Sound Transmission Loss for Finite Sandwich Panels Based on a Test Procedure on Beam Elements." ASME. J. Vib. Acoust. December 2013; 135(6): 061005. https://doi.org/10.1115/1.4023842
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