Hydrodynamic response time of magnetorheological fluid in valve mode: model and experimental verification

Result code in IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00216305%3A26210%2F21%3APU141971" target="_blank" >RIV/00216305:26210/21:PU141971 - isvavai.cz</a>

Result on the web

<a href="https://iopscience.iop.org/article/10.1088/1361-665X/ac3437" target="_blank" >https://iopscience.iop.org/article/10.1088/1361-665X/ac3437</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1088/1361-665X/ac3437" target="_blank" >10.1088/1361-665X/ac3437</a>

Result language

angličtina

Original language name

Hydrodynamic response time of magnetorheological fluid in valve mode: model and experimental verification

Original language description

The transient behaviour of magnetorheological (MR) actuators affects their performance in progressive semiactive control suspension systems. The two sources of the time delay between the control signal and damping force are (i) dynamics of MR damper hardware and (ii) the MR fluid dynamics. The significant part of the MR fluid response time is the so-called hydrodynamic response time which is connected with the transient flow. Due to the above, the main aim of this paper is to experimentally determine the hydrodynamic response time of MR fluid and present systematic means for characterizing it via computational fluid dynamics (CFD) or analytical tools. The unique measurement method using an in-house patented slit flow rheometer is presented. The essence of the method relies on determining the pressure drop variation with the time spent by the fluid in the MR gap. The experimental determined hydrodynamic response time of MR fluid ranges from 0.4 ms to 1 ms for a selected gap size and a range of magnetic field stimuli. The results show that the higher the magnetic field, the lower the hydrodynamic response time is. Both CFD and analytical models exhibit similar trends as the experimental data. Moreover, the impact of temperature and gap size was determined. Here, the higher the gap size and temperature of MR fluid, the longer the response time is.

Czech name

—

Czech description

—

Type

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

CEP classification

—

OECD FORD branch

20301 - Mechanical engineering

Project

<a href="/en/project/GJ20-23261Y" target="_blank" >GJ20-23261Y: Study of the magnetorheological fluid response time</a><br>

Continuities

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

Publication year

2021

Confidentiality

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

Name of the periodical

SMART MATERIALS & STRUCTURES

ISSN

0964-1726

e-ISSN

1361-665X

Volume of the periodical

30

Issue of the periodical within the volume

12

Country of publishing house

GB - UNITED KINGDOM

Number of pages

13

Pages from-to

1-13

UT code for WoS article

000739507100001

EID of the result in the Scopus database

2-s2.0-85120744103