Three-dimensional finite element modeling of hydroacoustic diaphragms: Structural reinforcement effect of acoustic characters

The design of the piston driven diaphragm is critical for underwater acoustic sound generators. The reinforcement beams can be used to alter the acoustic performance of the diaphragm. A 3 D finite element (FE) model was established to study the effect of different sized reinforcement beams using the...

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Bibliographic Details
Published inInstrumentation science & technology Vol. 50; no. 5; pp. 520 - 529
Main Authors Na, Qi, Feng, Guosheng, Tian, Tixian
Format Journal Article
LanguageEnglish
Published Abingdon Taylor & Francis 03.09.2022
Taylor & Francis Ltd
Subjects
Diaphragm
Diaphragms (mechanics)
dynamic response of fluid and structure
finite element
Finite element method
Hydroacoustic diaphragm
hydroacoustic projectors
Mathematical models
Performance evaluation
piston driven diaphragm
Pressure
Reinforcement
Resonant frequencies
Sound
Sound generators
Sound pressure
Three dimensional models
Underwater
Underwater acoustics
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Summary:The design of the piston driven diaphragm is critical for underwater acoustic sound generators. The reinforcement beams can be used to alter the acoustic performance of the diaphragm. A 3 D finite element (FE) model was established to study the effect of different sized reinforcement beams using the pressure acoustic and solid mechanical models. The underwater sound pressure level (SPL) and eigenfrequencies were analyzed to evaluate the acoustic performance of the diaphragms. The results show that the large reinforcement beam sizes change the eigenfrequencies and the sound pressure.
ISSN:1073-9149
1525-6030
DOI:10.1080/10739149.2022.2043902