DESIGN OF FAST MAGNETORHEOLOGICAL DAMPER USING SELECTIVE LASER MELTING TECHNOLOGY

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00216305%3A26210%2F18%3APU130231" target="_blank" >RIV/00216305:26210/18:PU130231 - isvavai.cz</a>

Výsledek na webu

<a href="http://www.engmech.cz/improc/2018/905.pdf" target="_blank" >http://www.engmech.cz/improc/2018/905.pdf</a>

DOI - Digital Object Identifier

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Jazyk výsledku

angličtina

Název v původním jazyce

DESIGN OF FAST MAGNETORHEOLOGICAL DAMPER USING SELECTIVE LASER MELTING TECHNOLOGY

Popis výsledku v původním jazyce

Abstract: This paper examines a potential of structured magnetic circuits for a construction of piston of magnetorheological (MR) damper with short response time, great force range and good mechanical properties. Using complex structures designed according to the magnetic FEM simulation can almost eliminate eddy-currents (and thus response time), reduce the weight of magnetic circuit with only a small drop in magnetic flux in the magnetic circuit. Due to the complexity of shapes of structured magnetic circuits, selective laser melting (SLM) technology is currently considered as the only possible technology. A shape optimization with respect to SLM limitations is therefore proposed. As a material for the magnetic circuit, nearly pure Fe was chosen. This material has very good magnetic properties but the drawback is a very good electric conductivity, which causes large generation of eddy currents during rapid changes of magnetic field. Suggested structured magnetic circuit is compared to a solid magnetic circuit by means of magnetic simulations. Simulations showed that the structured geometry of magnetic circuits can effectively reduce its weight (the weight of bobbin was reduced by up to 45 % and the weight of outer cylinder was reduced by up to 13 %) while time response is reduced more than 18 times and inductance drop is less than 20 %.

Název v anglickém jazyce

DESIGN OF FAST MAGNETORHEOLOGICAL DAMPER USING SELECTIVE LASER MELTING TECHNOLOGY

Popis výsledku anglicky

Abstract: This paper examines a potential of structured magnetic circuits for a construction of piston of magnetorheological (MR) damper with short response time, great force range and good mechanical properties. Using complex structures designed according to the magnetic FEM simulation can almost eliminate eddy-currents (and thus response time), reduce the weight of magnetic circuit with only a small drop in magnetic flux in the magnetic circuit. Due to the complexity of shapes of structured magnetic circuits, selective laser melting (SLM) technology is currently considered as the only possible technology. A shape optimization with respect to SLM limitations is therefore proposed. As a material for the magnetic circuit, nearly pure Fe was chosen. This material has very good magnetic properties but the drawback is a very good electric conductivity, which causes large generation of eddy currents during rapid changes of magnetic field. Suggested structured magnetic circuit is compared to a solid magnetic circuit by means of magnetic simulations. Simulations showed that the structured geometry of magnetic circuits can effectively reduce its weight (the weight of bobbin was reduced by up to 45 % and the weight of outer cylinder was reduced by up to 13 %) while time response is reduced more than 18 times and inductance drop is less than 20 %.

Druh

D - Stať ve sborníku

CEP obor

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OECD FORD obor

20301 - Mechanical engineering

Projekt

Výsledek vznikl pri realizaci vícero projektů. Více informací v záložce Projekty.

Návaznosti

P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)

Rok uplatnění

2018

Kód důvěrnosti údajů

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

Název statě ve sborníku

ENGINEERING MECHANICS 2018

ISBN

978-80-86246-88-8

ISSN

1805-8256

e-ISSN

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Počet stran výsledku

4

Strana od-do

905-908

Název nakladatele

Institute of theoretical and applied mechanics of the Czech academy of Sciences

Místo vydání

Praha

Místo konání akce

Svratka

Datum konání akce

14. 5. 2018

Typ akce podle státní příslušnosti

WRD - Celosvětová akce

Kód UT WoS článku

000465489800226