Calculation of natural frequency and mode shapes for a high speed bevel gear

• Autorzy: Michalska A. , Marciniec A.
• Języki publikacji: EN

Abstrakty

EN

The aim of this article is to analyze free vibrations of the tower shaft that drives the accessory gearbox used in a turbofan aircraft engine. The engine is used to power a midsize business jet. The problem was solved in two ways: by a frequency response measurement test and by employing the dynamic FEA (Finite Element Analysis) that can predict the modal shapes quite accurately (Ramil et al., 2004 and Li et al., 2004). The analysis conducted on an accurate model shows that results were very close to those achieved during the frequency response measurement test. However, working with such a complex model is time-consuming, impossible for preliminary analysis and, as demonstrated in this article, unnecessary. The purpose of this study was to work out a method that would minimize the total time necessary to conduct the analysis while maintaining the good level of accuracy.

Słowa kluczowe

EN

FEM; natural frequencies; dynamics; turbofan aircraft engine

PL

dynamika; metoda elementów skończonych; koło zębate

• Wydawca: Oficyna Wydawnicza Uniwersytetu Zielonogórskiego
• Czasopismo: International Journal of Applied Mechanics and Engineering
• Rocznik: 2008
• Tom: Vol. 13, no 2
• Strony: 415--426
• Opis fizyczny: Bibliogr. 4 poz., rys., tab., wykr.

Twórcy

autor

Michalska A.

autor

Marciniec A.

• FTE "PAP Rzeszow" S.A. ul. Hetmanska 120, 35-078 Rzeszow, POLAND,

Bibliografia

• Ferraris G., Maisonneuvet V. and Lalanne M. (1996): Prediction of the dynamic behaviour of non-symmetric coaxial co-opcounter-rotating rotors. - Journal of Sound and Vibration, vol.195, pp.649-666.
• Li R., Yang Ch., Lin T., Chen X. and Wang L. (2004): Finite element simulation of the dynamical behavior of a speed-increase gearbox. - Journal of Materials Processing Technology, vol.150, pp.170-174.
• Lipka J. (1967): Strength of running mechanical component. - WNT Warszawa.
• Ramil P. Tanna and Teik C. Lim (2004): Modal frequency deviations in estimating ring gear modes using smooth ring solutions. - Journal of Sound and Vibration, vol.269, No.3, pp.1099-1110.