Journal of Advanced Marine Engineering and Technology

The Korean Society of Marine Engineering (한국마린엔지니어링학회)
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A Study on the Measurement and Analysis of Bearing Reaction Forces of Marine Propulsion Shafting System using Strain-Gauge

스트레인 게이지를 이용한 선박용 추진 축계의 베어링 반력 측정에 관한 연구

  • 김철우 (STX엔진(주)엔진기술연구소 엔진연구1팀) ;
  • 이용진 (ABS선급) ;
  • 조권회 (한국해양대학교 해사대학 기관시스템공학부) ;
  • 김의간 (한국해양대학교 공과대학 기계정보공학부)
  • Published : 2008.01.31
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Abstract

Bearing damages by shaft misalignment have frequently been happened in marine ships. Specially. after stern tube bearing damage and failure for large crude oil carriers have been reported several times. However. the bearing reaction of the after stern tube bearing cannot be measured by jack-up test due to the hull structure condition. Therefore, when the jack-up test is used for the bearing reaction measurements, the bearing reaction for the after stern tube bearing obtained from the theoretical calculation method have to be used. In this paper, the shaft alignment on the large oil crude carrier is theoretically calculated and the differences between the calculated and actual installed bearing reaction values are compared. The bearing reactions for forward stern tube bearing and intermediate bearing are calculated by the simple formula using the strain gauge bending moments obtained from the measurements. Their reliability is confirmed by comparing the bearing reactions from jack-up test and the bearing reaction for after stern tube bearing is calculated by the same test. Also, the bearing reactions on the after stern tube bearing, forward stern tube bearing and intermediate shaft bearing under all operating conditions are calculated by using the bending moments obtained from the measurements and it is confirmed that the differences of the bearing reaction for all operating conditions are caused from hull deflection. The results of this study should prove useful for the future projects of the alignment calculation including the hull deflection effectiveness.

Keywords

References

  1. Kosib R. E. and Francis J. J. and Woolacott RA., New England Section, SNAME, 1959/1
  2. Antkowiak E. T., Development Report R-11, Boston Naval Shipyard, 1957/10
  3. Anderson H. C. and Zrodowski J. J., Trans. SNAME, Vol.67, 1959, P.449
  4. Michell R., Naval Engineers Journal, 1959/2 P.153
  5. American Bureau of Shipping, 'Guidance Notes on Propulsion Shafting Alignment', April 2004
  6. Holger Mumm, 'The Need for MoreConsidered Design Approach toEngine-Hull Interaction'Germanisher Lloyd
  7. H. J. Jeon, 'Ship Propulsion Transmission Equipment' 1986, Taehwa Publishing Company
  8. M. N. Keshava Rao and M. V. Dharaneepathy, Computer-Aided Alignment of Ship PropulsionShafts by Strain Gage Methods', MarineTechnology, Vol. 28. No. 2. March 1991, pp. 84-90
  9. Grant. R. B, 'Shaft Alignment Methods with Strain Gages and Load Cells', Marine Technology, Vol. 17, No.1, January 1980, pp. 8-15
  10. Perry C.C. and Lissner, H.R, 'The Strain Gauge Primer, MeGraw-Hill, New York, 1962
  11. Forrest, A. W. and Labasky, R.F., 'Shaft Alignment Using Strain Gages', Marine Technology, Vol. 18. No.3.July 1981, pp. 276-284
  12. K. S. Kim, W. S. Jang, 'A Study on Shaft Alignment of the Rotating Machinery by Using Strain Gages', Journal of the Korean Society of Precision Engineering Marine Technology, Vol. 18. No.5. May 2002
  13. 전효중,선박동력전달장치,태화출판사, 1986
  14. Det noske Veritas, Shaft Alignment Calculation User's Manual, NV 5060, 1981/5, p.260
  15. 문덕홍, 전효중, 삼연모멘트정리의 계산에 의한 박용추진축계배치 계산에 관한 연구, 한국박용기관학회지, 第5卷 第1號, 1981/8, p20-27
  16. 전효중∙박진길∙최재성,한국박용기관학회지, 第2卷 第1號, 1978/8, p.3.
  17. S.S. Na, I.C. Kim, K.S. Kim, T.Y. Kim, 한국공작기계학회, 99년도 축계학술대회 논문집 pp.63-68

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