Model of the gas journal bearing dynamics with a exibly supported foil.
Ładowanie...
Data
2015
Tytuł czasopisma
ISSN czasopisma
Tytuł tomu
Wydawca
Politechnika Łódzka. Wydział Mechaniczny. Katedra Automatyki, Biomechaniki i Mechatroniki.
Abstrakt
The work is devoted to an analysis of the journal bearing dynamics
employing a numerical model which takes into account factors related to
motion and friction of non{rotating elements of the sleeve. This model yields
the basis for simulations carried out in order to determine correctly dynamic
characteristics of an oil{free machine rotating system at the early stage of
its design and during its operation. On the basis of those simulations, the
thickness of gas lm was determined as well as the pressure distribution in
the bearing and its lift capacity. Moreover, the numerical program led to an
analysis of proper vibrations and forced vibrations of the system under consideration.
It was possible to obtain attenuation of the force and to visualize
a journal trajectory for the dynamic harmonic input function. The FFT (Fast
Fourier Transform) analysis of vibrations was implemented. In the spectrum,
only a frequency of the input function was observed, whereas and a lack of
subsynchronous frequencies pointed to the stable operation of the bearing.
Opis
Słowa kluczowe
systems theory - conference, dynamical systems - conference, dynamika, łożyska gazowe, tarcie
Cytowanie
Dynamical systems : mathematical and numerical approaches ; s. 523-532