Numerical and experimental investigation of the hysteresis phenomenon associated with instability of rotor-bearing systems
Identifikátory výsledku
Kód výsledku v 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>
Výsledek na webu
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DOI - Digital Object Identifier
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Alternativní jazyky
Jazyk výsledku
angličtina
Název v původním jazyce
Numerical and experimental investigation of the hysteresis phenomenon associated with instability of rotor-bearing systems
Popis výsledku v původním jazyce
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.
Název v anglickém jazyce
Numerical and experimental investigation of the hysteresis phenomenon associated with instability of rotor-bearing systems
Popis výsledku anglicky
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.
Klasifikace
Druh
O - Ostatní výsledky
CEP obor
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OECD FORD obor
20302 - Applied mechanics
Návaznosti výsledku
Projekt
<a href="/cs/project/GA17-15915S" target="_blank" >GA17-15915S: Nelineární dynamika rotujících systémů s uvažováním nestabilit v olejovém filmu s důrazem na lokální jevy</a><br>
Návaznosti
P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)
Ostatní
Rok uplatnění
2019
Kód důvěrnosti údajů
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů