Detail publikace
Numerical computation of the damping and stiffness coefficients of the classical and magnetorheological squeeze film damper
FERFECKI, P. ZAPOMĚL, J. ŠOFER, M. POCHYLÝ, F. FIALOVÁ, S.
Anglický název
Numerical computation of the damping and stiffness coefficients of the classical and magnetorheological squeeze film damper
Typ
článek ve sborníku ve WoS nebo Scopus
Jazyk
en
Originální abstrakt
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.
Anglický abstrakt
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.
Klíčová slova anglicky
Squeeze film damper, Magnetorheological fluid, Hydraulic forces, Navier-Stokes equations, Reynolds equation
Vydáno
14.03.2018
Nakladatel
EDP Sciences
ISSN
2261-236X
Kniha
XXII SLOVAK-POLISH SCIENTIFIC CONFERENCE ON MACHINE MODELLING AND SIMULATIONS 2017
Ročník
157
Číslo
1
Strany od–do
080011–0800112
Počet stran
12
BIBTEX
@inproceedings{BUT146662,
author="Petr {Ferfecki} and Jaroslav {Zapoměl} and Michal {Šofer} and František {Pochylý} and Simona {Fialová},
title="Numerical computation of the damping and stiffness coefficients of the classical and magnetorheological squeeze film damper",
booktitle="XXII SLOVAK-POLISH SCIENTIFIC CONFERENCE ON MACHINE MODELLING AND SIMULATIONS 2017 ",
year="2018",
volume="157",
number="1",
month="March",
pages="080011--0800112",
publisher="EDP Sciences",
issn="2261-236X"
}