Dynamic analyses of ships shafts lines

• Autorzy: Grządziela A.
• Języki publikacji: EN

Abstrakty

EN

Ship propulsion plant usually works in a hard environment caused by static forces and permanent dynamic loads. Exceeding tolerable values of shaft alignments causes damage to radial and thrust bearings in a relatively short time. The modeling of dynamical reactions could bring information for the designer to recognize the level of hazard to a propulsion system. The paper presents a proposal of identification of the degree of hazard to ship shaft line due to forces of shaft misalignment. A theoretical analysis was made of the influence of changes in co-axiality of shafts resulting from the elastic deformations of a hull structure in the vicinity of the shaft bearing foundations. The main problem concerning naval vessels is the lack of dynamical requirements as regards the stiffness of the hull. The modelled signals were recognized within sensitive symptoms of two sub-models: a model of propulsion system and a model of shafts misalignment. Both sub-models allow testing forces and their responses in vibration spectrum using SIMULINK software.

Słowa kluczowe

EN

monitoring; vibration; marine propulsion system; shaft line

• Wydawca: Oficyna Wydawnicza Politechniki Wrocławskiej
• Czasopismo: Systems Science
• Rocznik: 2008
• Tom: Vol. 34, no 3
• Strony: 45--50
• Opis fizyczny: Bibliogr. 6 poz., rys., wykr.

Twórcy

autor

Grządziela A.

• Naval University of Gdynia, Śmidowicza 69, Gdynia, Poland

Bibliografia

• [1] Cempel Cz., Tomaszewski F., Diagnostics of machines. General principles. Examples of applications, (in Polish), Publ. MCNEM, Radom, 1992.
• [2] Cudny K., Powierza Z., Selected problems of shock resistance of ships, (in Polish), Publ. Polish Naval University, Gdynia, 1987, pp. 44-47.
• [3] Dąbrowski Z., Machine shafts, (in Polish), State Scientific Publishing House (PWN), Warszawa, 1999, pp. 96-121.
• [4] Dietrych I., Kocańda S., Korewa W., Essentials of machine building, (in Polish), Scientific Technical Publishing House (WNT), 1974.
• [5] Gosiewski Z., Muszyńska 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, pp. 210-220.