An analysis of possible assessment of hazards to ship shaft line, resulting from impulse load

• Autorzy: Grzadziela A.
• Języki publikacji: EN

Abstrakty

EN

This paper presents a proposal of identification of a degree of hazard to ship shaft line due to impulse load caused by underwater explosion. A theoretical analysis was made of influence of changes in co-axiality of shafts on second-kind critical velocities resulting from elastic deformations of hull structure in vicinity of shaft bearing foundations. Results are presented of pilotage tests of underwater explosion performed on training water area. A preliminary mathematical model of underwater explosion is given with taking into account mass of explosives and distance from the tested object. The drawn conclusions show a way of identification of hazard to shaft line by using spectral analysis and time - runs of vibration signals recorded at shaft bearings

• Wydawca: -
• Czasopismo: Polish Maritime Research
• Rocznik: 2007
• Tom: 14
• Numer: 3
• Opis fizyczny: p.12-20,fig.,ref.

Twórcy

autor

Grzadziela A.

• Mechanic-Electric Faculty, Polish Naval University, Smidowicza 69, 81-103 Gdynia, Poland

Bibliografia

• 1. Cempel Cz., Tomaszewski F. (Ed.): Diagnostics of machines. General principles. Examples of applications (in Polish), Publ. MCNEM, Radom 1992
• 2. Cole R. H.: Underwater Explosions. Princeton University Press, Princeton 1948
• 3. Cudny K., Powierża Z.: Selected problems of shock resistance of ships (in Polish) Publ. Polish Naval University, Gdynia 1987.
• 4. Dąbrowski Z.: Machine shafts (in Polish), State Scientific Publishing House (PWN), Warszawa 1999
• 5. Dietrych I, Kocańda S. Korewa W: Essentials of machine building (in Polish). Scientific Technical Publishing House (WNT), Warszawa 1974
• 6. Gosiewski Z., Muszyńska A.: Dynamics of rotary machines (in Polish), Publ. High School on Engineering (WSI), Koszalin 1992
• 7. Kaliski S.: Vibrations and waves in solids (in Polish), State Scientific Publishing House (PWN), Warszawa 1966
• 8. Klatka N.: Construction of passive defense devices, Part Ia and Ib (in Polish), Publ. WSMW 1985
• 9. Rich H. L., Effects of underwater explosions on shipboard equipment, Bureau of Ships Journal, vol. 8, no. 4, 1959
• 10. www.martec.com