Effect of Absorption Layer on Interior Sound Field of Sonar Dome

Using the finite element method （FEM） and boundary element method （BEM） and considering the sound absorption layer which is covered on the backing of the sonar dome, the interior field in the dome which is excited by the incident plane wave has been studied. This method is validated by comparing num...

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Bibliographic Details
Published inShanghai jiao tong da xue xue bao Vol. 15; no. 4; pp. 451 - 457
Main Author 程钊 陶猛 范军
Format Journal Article
LanguageEnglish
Published Heidelberg Shanghai Jiaotong University Press 01.08.2010
Subjects
Architecture
Computer Science
Electrical Engineering
Engineering
Life Sciences
Materials Science
O 427
sonar dome
absorption layer
structure acoustic coupling
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ISSN1007-1172
1995-8188
DOI10.1007/s12204-010-1032-0

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Summary:Using the finite element method （FEM） and boundary element method （BEM） and considering the sound absorption layer which is covered on the backing of the sonar dome, the interior field in the dome which is excited by the incident plane wave has been studied. This method is validated by comparing numerical results with that of classic elastic theory. Then the effect of parameters of the sound absorption layer on interior sound field has been analyzed. The numerical calculation results show that uniformity of interior sound pressure is improved when the backing is covered with a sound absorption layer. The thicker the layer is, or the higher the loss factor of layer is, the more uniform the sound field is.
Bibliography:31-1943/U
sonar dome, structure acoustic coupling, absorption layer
O427
ISSN:1007-1172
1995-8188
DOI:10.1007/s12204-010-1032-0