Structural and Acoustic Response of A Finite Stiffened Submarine Hull

• Published in: China ocean engineering Vol. 30; no. 6; pp. 898 - 915
• Main Author: 王献忠 江晨半 许瑞阳
• Format: Journal Article
• Language: English
• Published: Nanjing Chinese Ocean Engineering Society 01.12.2016; Springer Nature B.V; Departments of Naval Architecture, Ocean and Structural Engineering, School of Transportation, Wuhan University of Technology, Wuhan 430063, China%Departments of Naval Architecture, Ocean and Structural Engineering, School of Transportation, Wuhan University of Technology, Wuhan 430063, China; Key Laboratory of High Performance Ship Technology(Wuhan University of Technology), Ministry of Education, Wuhan 430063, China
• Subjects: Acoustics; Coastal Sciences; Conical shells; Cylindrical shells; Dynamic models; Engineering; Fluid- and Aerodynamics; Marine & Freshwater Sciences; Methods; Numerical and Computational Physics; Oceanography; Offshore Engineering; Shells; Shells of revolution; Simulation; Sound pressure; Spherical shells; Stiffeners; Stiffness; Submarines; Thickness; Transfer matrices; transfer matrix method; conical-cylindrical-spherical shells; acoustic radiation; wave superposition method
• ISSN: 0890-5487; 2191-8945
• DOI: 10.1007/s13344-016-0058-y

After borrowing the idea of precise integration method, a precise integration transfer matrix method （PITMM） is proposed by modifying traditional transfer matrix method. The submarine hull can be modeled as joined conical- cylindrical-spherical shells. By considering the effect of the ring-stiffeners, the field transfer matrixes of shells of revolution are obtained accurately by PITMM. After assembling the field transfer matrixes into an entire matrix, the dynamic model is established to solve the dynamic responses of the joined shell. By describing the sound pressure in fluid by modified wave superposition method （MWSM） and collocating points along the meridian line of the joined shell, finally the structural and acoustic responses of a finite stiffened submarine hull can be predicted by coupled PITMM and MWSM. The effectiveness of the present method has been verified by comparing the structural and acoustic responses of the spherical shell with existing results. Furthermore, the effects of the model truncation, stiffness and thickness on the structural and acoustic responses of the submarine hull are studied.