PREVENTION OF ENGINE-ROOM VIBRATION. 1ST REPORT: AN ENGINE-ROOM DOUBLE BOTTOM

An account is given of a vibration analysis, using the finite-element method and plate theory, of an engine-room double bottom with the aim of establishing a simplified formula for design use. The formula thus evolved takes into consideration the effects of longitudinal irregularity of double-bottom rigidity, the effects of shear flexibility on bending vibration, the stiffness of ship side members, and the rigidity of the Diesel engine and its bed. The formula, which has been modified on the basis of measured results in actual ships, enables not only the fundamental but also the secondary natural frequencies of an engine-room double bottom to be examined with a calculation accuracy within about 10%.

• 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
  • Fujin, R
• Publication Date: 1976-11

Language

• Japanese

Media Info

• Features: References;
• Pagination: 11 p.
• Serial:
  • IHI Engineering Review
  • Volume: 16
  • ISSN: 0018-9820

Subject/Index Terms

• TRT Terms: Double bottoms; Engine rooms; Finite element method; Vibration; Vibration control
• Old TRIS Terms: Engine room vibration; Vibration prevention
• Subject Areas: Design; Marine Transportation;

Filing Info

• Accession Number: 00158001
• Record Type: Publication
• Source Agency: British Ship Research Association
• Files: TRIS
• Created Date: Aug 31 1977 12:00AM