LATERAL VIBRATION OF PROPELLER SHAFTING AND BOSSING

Taking the effect of oil-film stiffness into account, the lateral vibration of the propeller shafting and after hull steelwork was analysed by means of NASTRAN in a single-screw container ship built by I.H.I. This analysis served to clarify the combined effect of propeller shafting and bossing and the natural frequencies calculated to be in fairly good agreement with the measured values on the actual ship. On the basis of these results, the Authors has established a simplified formula for estimating the fundamental frequency of line shafting and bossing combined. The formula is accurate enough for practical use and the results obtained are within 5% of those due to F.E.M. The paper also presents an approximate formula for estimating bossing stiffness, which is considered to have considerable influence on the lateral vibration of line shafting in single and twin screw ships. Order from BSRA as No. 46,862.

• Availability:
  • Find a library where document is available. Order URL: http://worldcat.org/issn/00189820
• Corporate Authors:

  Ishikawajima-Harima Heavy Industries Co., Ltd.

  2-16, Toyosu 3 Chome, Koto-Ku
  Tokyo 135,   Japan 
• Authors:
  • Ochi, Y
  • Tanida, K
• Publication Date: 1977-5

Media Info

• Pagination: 9 p.
• Serial:
  • IHI Engineering Review
  • Volume: 7
  • ISSN: 0018-9820

Subject/Index Terms

• TRT Terms: Containerships; Design; Natural frequency; Propeller shafts; Propellers; Screw propellers; Shafts (Machinery); Vibration
• Uncontrolled Terms: Natural frequencies
• Old TRIS Terms: Propeller bosses; Propeller shaft vibration; Shaft vibration
• Subject Areas: Design; Marine Transportation;

Filing Info

• Accession Number: 00170039
• Record Type: Publication
• Source Agency: British Ship Research Association
• Files: TRIS
• Created Date: Feb 16 1978 12:00AM