Threshold stability curves for a nonlinear rotor-bearing system

Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F49777513%3A23520%2F19%3A43953216" target="_blank" >RIV/49777513:23520/19:43953216 - isvavai.cz</a>
Result on the web
<a href="https://www.sciencedirect.com/science/article/pii/S0022460X18307168?via%3Dihub" target="_blank" >https://www.sciencedirect.com/science/article/pii/S0022460X18307168?via%3Dihub</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.1016/j.jsv.2018.10.042" target="_blank" >10.1016/j.jsv.2018.10.042</a>

Result language
angličtina
Original language name
Threshold stability curves for a nonlinear rotor-bearing system
Original language description
Design parameters of fluid film bearings affect the stability of rotor-bearing systems, which can be characterized using so called threshold speed and a threshold curve (depending on a shaft speed and a chosen design parameter). The paper brings a detailed study of the shape of the threshold curve for a rigid rotor supported on a plain bearing. A novel comparison of stability threshold curves obtained employing various approaches to the hydrodynamic force modelling for all relevant bearing parameters is presented. Hydrodynamics forces are solved using four approaches: the infinitely short (IS) approximation, the infinitely short approximation extended by multiplicative correction polynomials for finite-length journal bearings (IScor), the finite differences method and the finite elements method. The influence of run-up time and acceleration is also investigated. All obtained threshold curves are compared to the analytical expressions for the threshold curves calculated for the IS approximation.
Czech name
—
Czech description
—

Type
J<sub>imp</sub> - Article in a specialist periodical, which is included in the Web of Science database
CEP classification
—
OECD FORD branch
20302 - Applied mechanics

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

Similar results(10)