Vibration and sound radiation of a double-plate system

Authors

  • A. Berry GAUS, Genie Mecanique, Sherbrooke Univ., Que., Canada
  • F. Laville GAUS, Genie Mecanique, Sherbrooke Univ., Que., Canada
  • J. Nicolas GAUS, Genie Mecanique, Sherbrooke Univ., Que., Canada
  • D. Stredulinsky

Keywords:

acoustic impedance, acoustic radiators, ships, variational techniques, vibrations, ship structures, sound radiation, double-plate system, mechanical impedances, variational method, arbitrary boundary conditions, point-masses, stiffeners, four-pole network approach, effect of structural changes

Abstract

The authors deal with the vibrations of a combined system and the sound radiation of the bottom plate when the top plate becomes excited by a point force in low- and mid-frequency ranges. In order to reduce the size of the linear system to be solved, the structure is divided into six sub-structures which are the two plates and the four suspensions and for which mechanical impedances must be determined. The mechanical impedances of both plates were obtained from a variational method general enough to include arbitrary boundary conditions, point-masses and stiffeners on either plate. The mechanical impedances of the suspensions were calculated with a four-pole network approach. The model is used to investigate the efficiency of suspensions and the effect of structural changes on either plate in order to minimize the radiated power

Published

1991-09-01

How to Cite

1.
Berry A, Laville F, Nicolas J, Stredulinsky D. Vibration and sound radiation of a double-plate system. Canadian Acoustics [Internet]. 1991Sep.1 [cited 2020Oct.22];19(4):69-70. Available from: https://jcaa.caa-aca.ca/index.php/jcaa/article/view/673

Issue

Section

Proceedings of the Acoustics Week in Canada

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