Numerical and experimental investigation of the hysteresis phenomenon associated with instability of rotor-bearing systems

Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F49777513%3A23520%2F19%3A43954645" target="_blank" >RIV/49777513:23520/19:43954645 - isvavai.cz</a>
Result on the web
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DOI - Digital Object Identifier
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Result language
angličtina
Original language name
Numerical and experimental investigation of the hysteresis phenomenon associated with instability of rotor-bearing systems
Original language description
The threshold speed for the fluid-induced instability of a rotor supported on a journal bearing can be identified as the speed at which rotor's vibrations significantly increase during a run-up, or the speed at which rotor's vibrations significantly decrease during a run-down. The threshold speeds detected during the run-up and the run-down are not the same. This hysteresis phenomenon is investigated in this paper both experimentally and computationally. An in-house software with a solver based on the finite element method for rotor dynamics and a solver based on the finite difference method for hydrodynamic lubrication in the journal bearing is used.
Czech name
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Czech description
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Project
<a href="/en/project/GA17-15915S" target="_blank" >GA17-15915S: Nonlinear dynamics of rotating systems considering fluid film instabilities with the emphasis on local effects</a><br>
Continuities
P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)

Publication year
2019
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

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