Publication result detail

Hydrodynamic response time of magnetorheological fluid in valve mode: an initial study

KUBÍK, M.; ŠEBESTA, K.

Original Title

Hydrodynamic response time of magnetorheological fluid in valve mode: an initial study

English Title

Hydrodynamic response time of magnetorheological fluid in valve mode: an initial study

Type

Paper in proceedings (conference paper)

Original Abstract

The transient behaviour of magnetorheological (MR) damper is a very important parameter affecting the performance of this technology in modern semi-actively controlled suspension systems. Currently, the transient behaviour of the MR damper is limited by dynamics of the MR fluid (MRF) itself. The significant part of MRF response time is a hydrodynamic response time which is connected with transient rheology and development of velocity profile in the slit gap. In this paper, the method for measuring the hydrodynamic response time of MRF operating in valve mode is presented. The hydrodynamic response time of MRF-132DG achieved value of τ90 = 0.78 ms for H = 17.5 kA/m a value of τ90 = 0.65 ms for H = 34 kA/m for given geometry of gap. The difference between model and experiment is lower in higher yield stresses of MRF.

English abstract

The transient behaviour of magnetorheological (MR) damper is a very important parameter affecting the performance of this technology in modern semi-actively controlled suspension systems. Currently, the transient behaviour of the MR damper is limited by dynamics of the MR fluid (MRF) itself. The significant part of MRF response time is a hydrodynamic response time which is connected with transient rheology and development of velocity profile in the slit gap. In this paper, the method for measuring the hydrodynamic response time of MRF operating in valve mode is presented. The hydrodynamic response time of MRF-132DG achieved value of τ90 = 0.78 ms for H = 17.5 kA/m a value of τ90 = 0.65 ms for H = 34 kA/m for given geometry of gap. The difference between model and experiment is lower in higher yield stresses of MRF.

Keywords

magnetorheological fluid

Key words in English

magnetorheological fluid

Authors

KUBÍK, M.; ŠEBESTA, K.

RIV year

2022

Released

24.09.2021

Publisher

IOP Publishing

Book

World Symposium on Smart Materials and Applications (WSSMA 2021) 16th-18th July 2021, Bangkok, Thailand

ISBN

1757-899X

Periodical

IOP Conference Series: Materials Science and Engineering

Volume

1186

Number

1

State

United Kingdom of Great Britain and Northern Ireland

Pages from

1

Pages to

7

Pages count

7

URL

https://iopscience.iop.org/article/10.1088/1757-899X/1186/1/012002

Full text in the Digital Library

http://hdl.handle.net/11012/201778

BibTex

@inproceedings{BUT172576,
  author="Michal {Kubík} and Karel {Šebesta}",
  title="Hydrodynamic response time of magnetorheological fluid in valve mode: an initial study",
  booktitle="World Symposium on Smart Materials and Applications (WSSMA 2021) 16th-18th July 2021, Bangkok, Thailand",
  year="2021",
  journal="IOP Conference Series: Materials Science and Engineering",
  volume="1186",
  number="1",
  pages="1--7",
  publisher="IOP Publishing",
  doi="10.1088/1757-899X/1186/1/012002",
  url="https://iopscience.iop.org/article/10.1088/1757-899X/1186/1/012002"
}

Documents

Kubik_2021