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FERFECKI, P. ZAPOMĚL, J. ŠOFER, M. POCHYLÝ, F. FIALOVÁ, S.
Original Title
Numerical computation of the damping and stiffness coefficients of the classical and magnetorheological squeeze film damper
Type
conference paper
Language
English
Original Abstract
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.
Keywords
Squeeze film damper, Magnetorheological fluid, Hydraulic forces, Navier-Stokes equations, Reynolds equation
Authors
FERFECKI, P.; ZAPOMĚL, J.; ŠOFER, M.; POCHYLÝ, F.; FIALOVÁ, S.
Released
14. 3. 2018
Publisher
EDP Sciences
ISBN
2261-236X
Periodical
MATEC Web of Conferences
Year of study
157
Number
1
State
French Republic
Pages from
080011
Pages to
0800112
Pages count
12
URL
https://www.matec-conferences.org/articles/matecconf/pdf/2018/16/matecconf_mms2018_08001.pdf
Full text in the Digital Library
http://hdl.handle.net/11012/196433
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", journal="MATEC Web of Conferences", volume="157", number="1", pages="080011--0800112", publisher="EDP Sciences", doi="10.1051/matecconf/201815708001", issn="2261-236X", url="https://www.matec-conferences.org/articles/matecconf/pdf/2018/16/matecconf_mms2018_08001.pdf" }