Dynamic analyses of ships shafts lines

• Autorzy: Grządziela A.
• Języki publikacji: EN

Abstrakty

EN

Ships' propulsion plant usually works in a hard environment caused by static forces and permanent dynamic loads. Exciding of tolerated values of shaft alignments causes a damage of radial and thrust bearings in relative short time. Modelling of dynamical reactions could bring information to the designer for recognizing the level of hazard for propulsion system. Knowledge of a character of dynamic loading which affects ship shaft line can make it possible to identify potential failures by means of on-line vibration measuring systems. This way elimination of costly and time-consuming overhauls on dock leads to lowering operational costs and increasing ship fighting merits. A paper presents a proposal of identification of a degree of hazard to ship shaft line due to forces of shafts misalignment. A theoretical analysis was made of influence of changes in co - axiality of shafts resulting from elastic deformations of hull structure in vicinity of shaft bearing foundations. The main problem of naval vessels is a lack of dynamical requirements of stiffness of the hull. Modelled signals were recognized within sensitive symptoms of two sub models: model of propulsion system and model of shaft's misalignment. Both sub models allow testing forces and their responses in vibration spectrum using SIMULINK software.

Słowa kluczowe

EN

transport; ship propulsions; dynamic analyse; propulsion system; Simulink software

• Wydawca: Łukasiewicz Research Network - Institute of Aviation ; European Science Society of Powertrain and Transport KONES Poland ; Wydawnictwo Instytutu Technicznego Wojsk Lotniczych
• Czasopismo: Journal of KONES
• Rocznik: 2008
• Tom: Vol. 15, No. 4
• Strony: 163--170
• Opis fizyczny: Bibliogr. 6 poz., rys.

Twórcy

autor

Grządziela A.

• Naval University of Gdynia Smidowicza Street 69, Gdynia, Poland tel.: [phone],

Bibliografia

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• [2] Cudny, K., Powierża, Z., Selected problems of shock resistance of ships (in Polish), Publ. Polish Naval University, pp. 44-47, Gdynia 1987.
• [3] Dąbrowski, Z., Machine shafts (in Polish), State Scientific Publishing House (PWN), pp. 96-121, Warszawa 1999.
• [4] Dietrych, I., Kocańda, S., Korewa, W., Essentials of machine building (in Polish), Scientific Technical Publishing House (WNT), 1974.
• [5] Gosiewski, Z., Muszynska, A., Dynamics of rotary machines (in Polish), Publ. High School on Engineering (WSI), Koszalin 1992.
• [6] Kaliski, S., Vibrations and waves in solids (in Polish), State Scientific Publishing House (PWN), Warszawa 1966.