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

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.