Hydrophysics

Hydrophysics

Sonar Dome Acoustic Analysis by Using Statistical Energy Analysis (SEA) Method

Document Type : Original Article

Authors
Mohammad sadegh Ebrahimi 1
Abdureza Kabiri Atabadi 1
Mehdi Dadkhah 2
1 Faculty of Mechanics, Malek Ashtar University of Technology
2 Faculty of Mechanics, Malek Ashtar University of Technology, Iran
Abstract
Statistical Energy Analysis (SEA) is a suitable method for vibro acoustic analysis of engineering models in high frequencies considering other analytical method limitations such as Finite Element and Boundary Element Methods. This method is based on averaging of acoustical and vibrational flow in subsystems. In this research, first SEA is introduced briefly and then, analysis of vibrating plate with SEA and VA One code is investigated. After verification of VA One results, acoustic performance of sonar dome in diffusion load is studied and thickness and material effects of sonar dome on acoustic pressure in specific point is investigated. The results show that acoustic performance is improved with increasing thickness in high frequencies. Also the acoustic transparency of carbon/epoxy and graphite/epoxy is averagely better than other studied materials and aluminum has better performance compared to steel and titanium.
Keywords
Statistical Energy Analysis
Vibro-Acoustic Analysis
Modal density
VA One
Sonar Dome
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  • Receive Date 16 January 2021