Application of the magnetorheological squeeze film dampers for reducing energy losses in supports of rotors of rotating machines

Result code in IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F61388998%3A_____%2F17%3A00484157" target="_blank" >RIV/61388998:_____/17:00484157 - isvavai.cz</a>

Alternative codes found

RIV/61989100:27230/17:10237781 RIV/61989100:27740/17:10237781

Result on the web

<a href="http://dx.doi.org/10.1115/DETC2017-67433" target="_blank" >http://dx.doi.org/10.1115/DETC2017-67433</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1115/DETC2017-67433" target="_blank" >10.1115/DETC2017-67433</a>

Result language

angličtina

Original language name

Application of the magnetorheological squeeze film dampers for reducing energy losses in supports of rotors of rotating machines

Original language description

Unbalance of rotating parts is the main source of excitation of lateral oscillations of rotors, of increase of time varying forces transmitted to the rotor stationary part, and of energy losses generated in the support elements. The technological solution, which makes it possible to reduce these undesirable effects, consists in adding damping devices to the rotor supports. A simple dynamical analysis shows that to achieve their optimum performance their damping effect must be adaptable to the current operating speed. This is enabled by magnetorheological squeeze film dampers, the damping effect of which is controlled by the change of magnetic flux passing through the lubricating layer. The developed mathematical model of the magnetorheological squeeze film damper is based on assumptions of the classical theory of lubrication and on representing the magnetorheological oil by a bilinear material. The results of the carried out computational simulations show that the appropriate control of the damping force makes it possible to minimize the energy losses in a wide range of operating speeds. The development of a new mathematical model of the magnetorheological squeeze film damper, the extension of computational procedures, in which this model has been implemented, the confirmation that the magnetorheological dampers make it possible to reduce energy losses in the rotor supports, and learning more on influence of controllable dampers on behavior of rotor systems are the principal contributions of the presented paper. The carried out research highlights the possibility of reducing the energy losses by means of employing magnetorheological squeeze film dampers, which represents a new field ofntheir prospective application.n

Czech name

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Czech description

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Type

D - Article in proceedings

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

2017

Confidentiality

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

Article name in the collection

Proceedings of the ASME Design Engineering Technical Conference

ISBN

978-07-918-5822-6

ISSN

—

e-ISSN

—

Number of pages

7

Pages from-to

1-7

Publisher name

American Society of Mechanical Engineers (ASME)

Place of publication

Washington

Event location

Cleveland, Ohio

Event date

Aug 6, 2017

Type of event by nationality

WRD - Celosvětová akce

UT code for WoS article

000423244600032