A new mathematical model of a short magnetorheological squeeze film damper for rotordynamic applications based on a bilinear oil representation – derivation of the governing equations

Result code in IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F61388998%3A_____%2F17%3A00484160" target="_blank" >RIV/61388998:_____/17:00484160 - isvavai.cz</a>

Alternative codes found

RIV/61989100:27230/17:10237766 RIV/61989100:27740/17:10237766

Result on the web

<a href="http://dx.doi.org/10.1016/j.apm.2017.07.040" target="_blank" >http://dx.doi.org/10.1016/j.apm.2017.07.040</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1016/j.apm.2017.07.040" target="_blank" >10.1016/j.apm.2017.07.040</a>

Result language

angličtina

Original language name

A new mathematical model of a short magnetorheological squeeze film damper for rotordynamic applications based on a bilinear oil representation – derivation of the governing equations

Original language description

A technological solution frequently used to suppress vibrations in rotating machines consists in adding damping devices to the rotor supports. To achieve their optimum performance, their damping effect must be adaptable to the current operating conditions. This is offered by magnetorheological squeeze film dampers. Magnetorheological oils are usually modelled as Bingham or Herschel-Bulkley fluids with discontinuous stress versus shear rate curves. However, the flow curves of real magnetorheological oils consist of two almost linear parts of different slopes so that their character is closer to a bilinear theoretical material. Magnetorheological dampers are usually implemented in the mathematical models of rotor systems by force couplings, which produce highly nonlinear equations of motion governing their oscillations, and in some cases with a discontinuous flow curve, have solution convergence problems. This paper proposes the use of a bilinear material to model the magnetorheological fluid with a continuous flow curve reducing the nonlinear nature of the governing equations. The expected assets are reaching a more plausible description of the physical behaviour of rotor systems and increase in the stability of the computational procedures for analysis of their lateral vibrations.n

Czech name

—

Czech description

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Type

J_imp - Article in a specialist periodical, which is included in the Web of Science database

CEP classification

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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

2017

Confidentiality

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Name of the periodical

Applied Mathematical Modelling

ISSN

0307-904X

e-ISSN

—

Volume of the periodical

52

Issue of the periodical within the volume

December

Country of publishing house

NL - THE KINGDOM OF THE NETHERLANDS

Number of pages

18

Pages from-to

558-575

UT code for WoS article

000415780400035

EID of the result in the Scopus database

2-s2.0-85032384349