The transient response of magnetorheological actuator/ fluid in shear mode on the rapid change of magnetic field: effect of shear rate

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00216305%3A26210%2F22%3APU145325" target="_blank" >RIV/00216305:26210/22:PU145325 - isvavai.cz</a>

Výsledek na webu

<a href="https://ieeexplore.ieee.org/stamp/stamp.jsp?arnumber=9899179" target="_blank" >https://ieeexplore.ieee.org/stamp/stamp.jsp?arnumber=9899179</a>

DOI - Digital Object Identifier

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Jazyk výsledku

angličtina

Název v původním jazyce

The transient response of magnetorheological actuator/ fluid in shear mode on the rapid change of magnetic field: effect of shear rate

Popis výsledku v původním jazyce

The semi-active (S/A) control can be easily applied to the magnetorheological (MR) actuators. The S/A control with MR actuator exhibits a significant improvement of suspension systems performance. However, the performance of the S/A control is significantly influenced by the transient response (response time) of the actuator. The currently published designs of MR damper achieved great transient behaviour (response time roughly 1.2 ms). It can be stated that the response time of MR fluid itself is probably close to the response time of the current designs of the MR actuator. The response time of MR fluid can be divided into (i) hydrodynamic response time, (ii) particle structure development response time, and (iii) rheological response time. In our research, we experimentally determined the rheological response time of MR fluid and measured the effect of shear rate. We developed a unique shear mode rheometer that allows rapid change of magnetic field in the gap. The response time of MRF 132-DG was determined based on the transfer function between the measured magnetic field and shear stress in MR fluid. The rheological response time (63.2 %) achieved a value of 0.66 ms for magnetic flux intensity of 12.5 kA/m and shear rate 40 s-1. As the shear rate increases, the response time decreases.

Název v anglickém jazyce

The transient response of magnetorheological actuator/ fluid in shear mode on the rapid change of magnetic field: effect of shear rate

Popis výsledku anglicky

The semi-active (S/A) control can be easily applied to the magnetorheological (MR) actuators. The S/A control with MR actuator exhibits a significant improvement of suspension systems performance. However, the performance of the S/A control is significantly influenced by the transient response (response time) of the actuator. The currently published designs of MR damper achieved great transient behaviour (response time roughly 1.2 ms). It can be stated that the response time of MR fluid itself is probably close to the response time of the current designs of the MR actuator. The response time of MR fluid can be divided into (i) hydrodynamic response time, (ii) particle structure development response time, and (iii) rheological response time. In our research, we experimentally determined the rheological response time of MR fluid and measured the effect of shear rate. We developed a unique shear mode rheometer that allows rapid change of magnetic field in the gap. The response time of MRF 132-DG was determined based on the transfer function between the measured magnetic field and shear stress in MR fluid. The rheological response time (63.2 %) achieved a value of 0.66 ms for magnetic flux intensity of 12.5 kA/m and shear rate 40 s-1. As the shear rate increases, the response time decreases.

Druh

D - Stať ve sborníku

CEP obor

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OECD FORD obor

20501 - Materials engineering

Projekt

<a href="/cs/project/GJ20-23261Y" target="_blank" >GJ20-23261Y: Studium časové odezvy magnetoreologické kapaliny</a><br>

Návaznosti

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

Rok uplatnění

2022

Kód důvěrnosti údajů

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

Název statě ve sborníku

ACTUATOR 2022; International Conference and Exhibition on New Actuator Systems and Applications

ISBN

978-3-8007-5894-4

ISSN

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e-ISSN

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Počet stran výsledku

4

Strana od-do

105-108

Název nakladatele

VDE

Místo vydání

neuveden

Místo konání akce

Mannheim

Datum konání akce

29. 6. 2022

Typ akce podle státní příslušnosti

WRD - Celosvětová akce

Kód UT WoS článku

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