NOISE PREDICTION AND PREVENTION IN SHIPS

The prediction and prevention of structure-borne sound on board merchant ships are discussed. Results of full-scale and model-scale experiments have indicated that the main power flow in the vertical direction in a ship structure is determined by the propagation of flexural waves in the plate elements. Based on these results a prediction model is developed. It is found that the velocity level of a deck is a function of the input power at the source, wave-numbers, masses, losses and dimensions of the plate elements in the structure. The attenuation of structure-borne sound is also a function of frequency. Predicted and measured structure-borne sound levels are compared. The effects of damping layers and resiliently mounted superstructures and accommodation systems are also discussed.

  • Supplemental Notes:
    • Presented at the Ship Vibration Symposium sponsored by The Ship Structure Committee and The Society of Naval Architects and Marine Engineers, Arlington, Virginia, October 16-17, 1978.
  • Corporate Authors:

    Society of Naval Architects and Marine Engineers

    601 Pavonia Avenue
    Jersey City, NJ  USA  07306-2907
  • Authors:
    • Nilsson, A C
  • Publication Date: 1978

Media Info

  • Features: References;
  • Pagination: 18 p.

Subject/Index Terms

Filing Info

  • Accession Number: 00183168
  • Record Type: Publication
  • Source Agency: Society of Naval Architects and Marine Engineers
  • Report/Paper Numbers: Proceeding
  • Files: TRIS
  • Created Date: Oct 31 1978 12:00AM