Noise Reduction of Elastic Structure Paste Viscoelastic Material Based on Complex Radius Vector of Virtual Source

Yu Ming Wang; Yuan An He; De Jiang Shang

doi:10.4028/www.scientific.net/AMM.164.227

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HomeApplied Mechanics and MaterialsApplied Mechanics and Materials Vol. 164Noise Reduction of Elastic Structure Paste...

Noise Reduction of Elastic Structure Paste Viscoelastic Material Based on Complex Radius Vector of Virtual Source

Abstract:

It is hard to theoretically calculate the noise reduction characteristics for underwater complex structure of paste viscoelastic material. This paper introduces complex radius vector inside radiator based on the advantages of singular integral provided by traditional virtual source superposition method to calculate the radiated sound field from finite cylindrical shells. This method adapts truncation regularization filter to overcome the effect of background noise to enhance the calculation accuracy and then use impedance transmission theory to calculate the noise reduction characteristics of the cylindrical shells paste viscoelastic material. Numerical simulations show the calculation accuracy is greatly dependent on the size and position of the distributed virtual sources. There exists an optimal complex radius to minimize the error.

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Periodical:

Applied Mechanics and Materials (Volume 164)

Pages:

227-230

DOI:

https://doi.org/10.4028/www.scientific.net/AMM.164.227

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Online since:

April 2012

Authors:

Yu Ming Wang, Yuan An He, De Jiang Shang

Keywords:

Acoustic Impedance Transfer, Complex Radius Vector, Distributed Virtual Source, Underwater Noise Reduction, Viscoelastic Material

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