CONSIDERATION OF PROPELLER DAMPING IN TORSIONAL VIBRATION OF RECENT PROPULSION SYSTEM

Propeller damping has decreased in recent vessels with the decrease of engine mass and propeller pitch ratio, adoption of aft engine for cargo efficiency, etc., accordingly its rate to the whole damping has also decreased. For the above reasons, traditional methods by Wilson et al. which consider propeller damping alone, estimate vibration amplitude and stress in excess. To get higher exactness the authors examined records and carried out calculations depending upon the energy theory which treats propeller damping. As a result of the examination an exact formula for the amplitude of one node vibration was developed.

• Corporate Authors:

  Society of Naval Architects of Japan

  23 Shiba-kotohiracho, Minato-ku
  Tokyo 135,   Japan 
• Authors:
  • Sugawara, T
  • Ochi, S
  • Inohara, Y
• Publication Date: 1970

Media Info

• Pagination: p. 237-246
• Serial:
  • Selected Papers, J of Soc of Naval Arch of Japan
  • Volume: 6
  • Publisher: Society of Naval Architects of Japan

Subject/Index Terms

• TRT Terms: Excitation; Propellers; Shafts (Machinery); Vibration
• Old TRIS Terms: Propeller excitation; Propeller vibration; Shaft vibration
• Subject Areas: Marine Transportation; Vehicles and Equipment;

Filing Info

• Accession Number: 00035203
• Record Type: Publication
• Source Agency: Society of Naval Architects of Japan
• Files: TRIS
• Created Date: Oct 27 1972 12:00AM