Detail publikačního výsledku

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.

Originální název

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

Anglický název

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

Druh

Stať ve sborníku v databázi WoS či Scopus

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

Squeeze film damper, Magnetorheological fluid, Hydraulic forces, Navier-Stokes equations, Reynolds equation

Klíčová slova v angličtině

Squeeze film damper, Magnetorheological fluid, Hydraulic forces, Navier-Stokes equations, Reynolds equation

Autoři

FERFECKI, P.; ZAPOMĚL, J.; ŠOFER, M.; POCHYLÝ, F.; FIALOVÁ, S.

Rok RIV

2019

Vydáno

14.03.2018

Nakladatel

EDP Sciences

Kniha

XXII SLOVAK-POLISH SCIENTIFIC CONFERENCE ON MACHINE MODELLING AND SIMULATIONS 2017

ISSN

2261-236X

Periodikum

MATEC web of conferences

Svazek

157

Číslo

1

Stát

Francouzská republika

Strany od

080011

Strany do

0800112

Strany počet

12

URL

https://www.matec-conferences.org/articles/matecconf/pdf/2018/16/matecconf_mms2018_08001.pdf

Plný text v Digitální knihovně

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="2274-7214",
  url="https://www.matec-conferences.org/articles/matecconf/pdf/2018/16/matecconf_mms2018_08001.pdf"
}

Dokumenty

Numerical_computation_of_the_damping_and_stiffness