Vibration isolation - exploring the foundations

Auteurs-es

  • H.M. Williamson Hugh Williamson Associates, Ottawa, Canada
  • J.C.S. Lai Hugh Williamson Associates, Ottawa, Canada
  • J. Dai Hugh Williamson Associates, Ottawa, Canada
  • C. Norwood Hugh Williamson Associates, Ottawa, Canada
  • Y. Li Hugh Williamson Associates, Ottawa, Canada

Mots-clés :

Mathematical models, Supports, Point mobility, Surface mobility

Résumé

The interaction between a large isolator and a supporting structure is examined. Large area contact can result in a mobility which is significantly different from measured or predicted point mobility. Surface mobility measurements can help avoid situations where poor isolation occurs in important frequency ranges due to high surface mobility in the foundation. The models used show that surface mobility is approximately equal to point mobility when the dimensions of the contact region are small compared to the governing wavelength in the supporting structure. Mobility changes significantly once the contact dimensions are of the order of, or larger than, the governing wavelength in the supporting structure.

Fichiers supplémentaires

Publié-e

1998-09-01

Comment citer

1.
Williamson H, Lai J, Dai J, Norwood C, Li Y. Vibration isolation - exploring the foundations. Canadian Acoustics [Internet]. 1 sept. 1998 [cité 21 nov. 2024];26(3):40-1. Disponible à: https://jcaa.caa-aca.ca/index.php/jcaa/article/view/1147

Numéro

Vol. 26 No. 3 (1998)

Rubrique

Actes du congrès de la Semaine canadienne d'acoustique

Licence

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