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.
- 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.
Society of Naval Architects and Marine Engineers601 Pavonia Avenue
Jersey City, NJ USA 07306-2907
- Nilsson, A C
- Publication Date: 1978
- Features: References;
- Pagination: 18 p.
- TRT Terms: Damping (Physics); Measurement; Noise; Noise control; Noise sources; Sound transmission; Structural analysis; Vibration; Vibration control
- Uncontrolled Terms: Noise measurement
- Old TRIS Terms: Sound radiation; Structural vibration; Structure-borne noise; Vibration prevention
- Subject Areas: Environment; Marine Transportation;
- 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