EVALUATION OF THE COMPUTATIONAL SIMULATIONS OF NONLINEAR VIBRATION OF ROTORS SUPPORTED BY HYDRODYNAMIC BEARINGS
The result's identifiers
Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F61989100%3A27230%2F10%3A86076225" target="_blank" >RIV/61989100:27230/10:86076225 - isvavai.cz</a>
Alternative codes found
RIV/61989100:27690/10:86076225
Result on the web
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DOI - Digital Object Identifier
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Alternative languages
Result language
angličtina
Original language name
EVALUATION OF THE COMPUTATIONAL SIMULATIONS OF NONLINEAR VIBRATION OF ROTORS SUPPORTED BY HYDRODYNAMIC BEARINGS
Original language description
The article deals with the influence of hydrodynamic bearings on the response of rotor systems excited by their imbalance. In the developed computational model the bearings are considered as cylindrical, short and cavitated (pí-film). The hydraulic forces are determined by integration of the pressure distribution in the oil film which is described by the Reynolds equation. To evaluate character of the rotor vibration forms of orbits, phase trajectories, steady-state time series of kinematic parameters of the centres of the bearings and the discs and their frequency spectra, Poincaré maps and bifurcation diagrams are used. The results of the carried out computational simulations show that due to nonlinear stiffness and damping parameters of the hydrodynamic bearings the imbalance force can excite not only periodic but also quasi-periodic or even chaotic oscillations and that their character and stability depends on the speed of the rotor rotation.
Czech name
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Czech description
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Classification
Type
J<sub>x</sub> - Unclassified - Peer-reviewed scientific article (Jimp, Jsc and Jost)
CEP classification
JR - Other machinery industry
OECD FORD branch
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Result continuities
Project
<a href="/en/project/GAP101%2F10%2F0209" target="_blank" >GAP101/10/0209: Research and modelling of the effect of control of yielding stress of magnetorheological liquid in a thin lubricating film on vibration of rotors</a><br>
Continuities
P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)<br>Z - Vyzkumny zamer (s odkazem do CEZ)
Others
Publication year
2010
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů
Data specific for result type
Name of the periodical
Transactions of the VŠB - Technical University of Ostrava, Mechanical Series
ISSN
1210-0471
e-ISSN
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Volume of the periodical
LVI
Issue of the periodical within the volume
2
Country of publishing house
CZ - CZECH REPUBLIC
Number of pages
8
Pages from-to
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UT code for WoS article
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EID of the result in the Scopus database
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