Research on vibration and acoustic radiation characteristics of underwater vehicle superstructure with composite sandwich panel

摘要

Compared with traditional steel materials, sandwich panel has been widely applied in underwater vehicle structure because of the high specific strength, excellent acoustic performance and strong design ability. Based on the acoustical-solid coupling finite element method, the vibration and acoustic radiation characteristics of underwater vehicle superstructure are analyzed in this paper. On this basis, the effect rule of shell thickness parameters on the vibration and acoustic radiation characteristics of underwater vehicle superstructure is explored, and the acoustic optimization design plan of superstructure with sandwich panel is proposed, so as to provide reference for the acoustic design of superstructure.