Free vibrations analysis of shrouded bladed discs with one loose blade

• Autorzy: Rządkowski R. , Kwapisz L. , Drewczyński M. , Szczepanik R. , Rao J.S.
• Języki publikacji: EN

Abstrakty

EN

As a failure of rotor blades in a gas turbine was reported, the rotating-mode shapes of flexible shrouded bladed disc assemblies were calculated using a finite element approach. Rotational effects, such as centrifugal stiffening were accounted for, and all couplings between the flexible parts were allowed. The spin softening effects were neglected. A dynamic analysis of the shrouded bladed disc demonstrated that it was designed with a sufficient safety region of resonance. In case of one blade getting loose, it is vibrating in resonance.

Słowa kluczowe

EN

blade; shrouded bladed disc; free vibration

• Wydawca: Politechnika Gdańska
• Czasopismo: TASK Quarterly : scientific bulletin of Academic Computer Centre in Gdansk
• Rocznik: 2006
• Tom: Vol. 10, No 1
• Strony: 83--95
• Opis fizyczny: Bibliogr. 3 poz., 17 rys., 6 tab.

Twórcy

autor

Rządkowski R.

autor

Kwapisz L.

autor

Drewczyński M.

autor

Szczepanik R.

autor

Rao J.S.

• Institute of Fluid-Flow Machinery, Polish Academy of Sciences, Fiszera 14, 800-952 Gdansk, Poland,

Bibliografia

• [1] Rao J S, Singh A K, Ramakrishnan C V and Gupta K 2000 Proc. 5th ASME Annual Engin. Sys. Design and Anal., Montreux, pp. 750-770
• [2] Rao J S 1991 Turbomachine Elade Vibration, Whey, New York
• [3] Rządkowski R 1998 Dynamics of Rotor Steam Turbine Rotor Blading. Part Two: Bladed Discs, Series Maszyny Przepływowe 22, Ossolineum, Wrocław