Vibration and sound radiation of a double-plate system

Auteurs-es

  • 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

Mots-clés :

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

Résumé

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

Fichiers supplémentaires

Publié-e

1991-09-01

Comment citer

1.
Berry A, Laville F, Nicolas J, Stredulinsky D. Vibration and sound radiation of a double-plate system. Canadian Acoustics [Internet]. 1 sept. 1991 [cité 13 mai 2026];19(4):69-70. Disponible à: https://jcaa.caa-aca.ca/index.php/jcaa/article/view/673

Numéro

Vol. 19 No. 4 (1991)

Rubrique

Actes du congrès de la Semaine canadienne d'acoustique

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