HYDROELASTIC ANALYSIS OF SOUND RADIATION FROM A STIFFENED SHELL OF REVOLUTION

Based on the modified Helmholtz integral equation and the structural finite element method, a matrix analytic method is presented for predicting the acoustic radiation and the dynamic responses of a submerged structure. An analytic formula is obtained by a series extension for evaluation of the singular integrals appeared in the boundary integral equation. The numerical predictions given by this method are compared with published theoretical and experimental results. Good agreements are obtained. The application is also made to a submerged ring-stiffened shell with engine foundation excited by multiple concentrated harmonic forces. The influence of the structural damping and the elbow plates of the engine foundation on the distributions of the acoustic pressure and the responses of the structure is briefly discussed.

• Supplemental Notes:
  • Shipbuilding of China, n 117, April 1992, p 53 [10 p, 8 ref, 4 tab, 11 fig]
• Authors:
  • Shen, Shuning
  • Li, Q
• Publication Date: 1992

Language

• Chinese

Subject/Index Terms

• TRT Terms: Dynamic loads; Hydroelasticity; Mathematical matrices; Sound transmission
• Uncontrolled Terms: Dynamic response
• Old TRIS Terms: Stiffened shells
• Subject Areas: Marine Transportation; Materials;

Filing Info

• Accession Number: 00703093
• Record Type: Publication
• Source Agency: British Maritime Technology
• Files: TRIS
• Created Date: Aug 14 1995 12:00AM