Numerical computation of the damping and stiffness coefficients of the classical and magnetorheological squeeze film damper

Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00216305%3A26210%2F18%3APU127505" target="_blank" >RIV/00216305:26210/18:PU127505 - isvavai.cz</a>
Result on the web
<a href="http://dx.doi.org/10.1051/matecconf/201815708001" target="_blank" >http://dx.doi.org/10.1051/matecconf/201815708001</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.1051/matecconf/201815708001" target="_blank" >10.1051/matecconf/201815708001</a>

Result language
angličtina
Original language name
Numerical computation of the damping and stiffness coefficients of the classical and magnetorheological squeeze film damper
Original language description
Technological solution, frequently used to suppress vibrations in rotating machines, consists in adding damping devices between the rotor and its frame. This is enabled by dampers working on the principle of a squeezing thin classical or magnetorheological fluid film. The Navier-Stokes equations, Reynolds equation, and modified Navier-Stokes equations are used to determine the pressure distribution in the thin fluid film. The damping and stiffness coefficients are computed by the developed procedure presented in this paper. The proposed computational approach is based on the perturbation of the synchronous circular whirling motion. The carriedout computational simulations show that the investigated mathematical models of the squeeze film damper and magnetorheological squeeze film damper allowed computation of the damping and stiffness coefficients. It has been found that the stiffness coefficients computed by the proposed mathematical models may be different.
Czech name
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Czech description
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Type
J<sub>SC</sub> - Article in a specialist periodical, which is included in the SCOPUS database
CEP classification
—
OECD FORD branch
20301 - Mechanical engineering

Project
Result was created during the realization of more than one project. More information in the Projects tab.
Continuities
P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)

Publication year
2018
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

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