Predicting Radiated Sound from a Submerged Ring-Stiffened Cylinder.

Abstract

Defence Research Establishment Atlantic (DREA) conducted experiments involving the measurement of radiated noise from a submerged ring-stiffened cylinder subjected to a harmonic load. These experiments were performed to provide validation data for structural acoustics computer codes being developed in-house and under contract. These codes are used to predict the vibrations of structures submerged in, or filled with, a dense fluid and also to predict the resulting radiated noise. This suite of codes, comprising the programs VAST, COUPLE, and BEMAP, was used to predict the natural frequencies and radiated noise, on- and off-resonance, from this cylinder. Comparisons are made between the predicted and measured natural frequencies and radiated noise levels and directivity. Overall, the programs were able to accurately predict both the structural resonances and the radiated noise patterns.

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Document Details

Document Type
Technical Report
Publication Date
Mar 01, 1997
Accession Number
ADA324044

Entities

People

  • Latyon E. Gilroy

Organizations

  • Defence Research and Development Canada

Tags

DTIC Thesaurus Topics

  • Frequency
  • Measurement
  • Noise
  • Radiated Noise
  • Resonance
  • Resonant Frequency
  • Ring Stiffened Cylinders
  • Stiffened Cylinders
  • Vibration

Fields of Study

  • Physics

Readers

  • Acoustics.
  • Computational Fluid Dynamics (CFD)
  • Structural Dynamics.