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Research Bulletin by RS

Regarding the barred speed ranges concretization as a result of the ship shafting torsional vibration calculation
Authors: V.K. Rumb, M.Yu. Ivanov

 

Abstract

The article presents the results of the research carried out by State Maritime Technical University (SPbSMTU) for decreasing the width of the barred speed ranges, prescribed by the results of torsional vibration calculation of the ship shafting and installations. It is shown that using the proposed method based on the close-to-resonance torsional vibration levels assessment the barred speed range width can be reduced compared with the one required by RS Rules, which has a positive effect on the operational characteristics of the ship. This work corresponds to the research on the topic carried out by IACS Machinery Panel, and in this regard may become the basis material for improving the MAKO URs, which specify the requirements for torsional vibration calculations of the ship shafting and evaluation of their results.

Keywords: shafting, resonance vibration, barred speed range, permissible stresses, fatigue strength.

 

References

1. Rumb V.K. Prochnost' i dolgovechnost' sudovykh mashin i mekhanizmov: uchebnoe posobie [Strength and durability of marine machinery and equipment: Educational manual]. St. Petersburg, SPbGMTU Publ., 2014, 237 p.

2. Rossiyskiy morskoy registr sudokhodstva. Pravila klassifikatsii i postroyki morskikh sudov, chasf VII [Russian Maritime Register of Shipping. Rules for classification and construction of sea-going ships, Part W]. St. Petersburg, 2017, 36 p. Terskikh VP. Krutil'nye kolebaniya valoprovodov silovykh ustanovok. Tom 1, 2, 3, 4 [Torsional vibration of shafting of power plants. Volume 1, 2, 3, 4]. Leningrad, Sudostroenie Publ., 1970, 205 p.

3. Istomin P.A. Krutil'nye kolebaniya v sudovykh DVS: uchebnoe posobie [Torsional vibration of marine I.C.E.: Educational manual]. Leningrad, Sudostroenie Publ., 1968, 304 p.

4. D'yakonov V.P. Spravochnik po algoritmam k programmam na yazyke beysik dlya personal'nykh EVM. Spravochnik [Reference manual in BASIC for Personnel Computers. Reference Manual]. Moscow, Nauka Publ., 1987, 240 p.


About authors

Rumb Viktor - PhD, professor, St. Petersburg State Marine Technical University, 3, Lotsmanskaya st., 190121, St. Petersburg, Russia 

Ivanov Mikhail - FAI "Russian Maritime Register of Shipping", 8, Dvortsovaya naberezhnaya, 191186, St. Petersburg, Russia

 

Issue: 46/47 (2017)


For citation: V.K. Rumb, M.Yu. Ivanov. Regarding the barred speed ranges concretization as a result of the ship shafting torsional vibration calculation. Research Bulletin by Russian Maritime Register of Shipping. 2017, No. 46/47, pp. 78-82.


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UDC:  629.12-233/12
Pages:  78-82
Article (.pdf):  Download


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