Dynamic mechanical properties of magnetorheological elastomers: Experiment and modelling
Dynamic mechanical properties of magnetorheological elastomers: Experiment and modelling
As a kind of smart material, magnetorheological elastomer (MRE) is composed of magnetizable particles dispersed in an elastomer matrix. Because adjusting an external magnetic field can continuously, rapidly and reversibly control the dynamic properties, there has been increasing research on MRE for mitigation of unwanted vibrations. In this paper, the dynamic mechanical analysis tests were performed to investigate the influence of strain, frequency and magnetic field on the controllable dynamic properties. The storage modulus and loss modulus of MRE were analyzed with frequencies from 1 to 50 Hz, strain amplitudes from 1 to 6% and magnetic field intensities from 0 to 500 mT. The results show that the storage modulus decreases with increasing strain amplitude, increases with frequency and magnetic strength, and remains constant when the magnetic saturation occurs. Furthermore, the dependence of loss modulus on frequency lies on the matrix material of MRE. Based on the experimental results, a fractional derivative model was developed to describe the viscoelastic properties and the controllable dynamic properties. The comprehensive study of mechanical property characterisation is a guarantee for constitutive models to accurately describe the dynamic behaviour of MRE, which is an essential step towards the application for vibration control.
Zhu, G. H.
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Li, Z. G.
7c2d6afd-b548-41bf-851b-77f209b66f55
Xiong, Y. P.
51be8714-186e-4d2f-8e03-f44c428a4a49
Xiao, L.
eff2bef8-52ca-46be-9eb9-af31a3baf51c
Li, M.
640bbc6d-98fc-445b-a559-42ad80d3be9f
Zhu, G. H.
02b015d8-1c29-4a52-b2e6-d9177b4c2f07
Li, Z. G.
7c2d6afd-b548-41bf-851b-77f209b66f55
Xiong, Y. P.
51be8714-186e-4d2f-8e03-f44c428a4a49
Xiao, L.
eff2bef8-52ca-46be-9eb9-af31a3baf51c
Li, M.
640bbc6d-98fc-445b-a559-42ad80d3be9f
Zhu, G. H., Li, Z. G., Xiong, Y. P., Xiao, L. and Li, M.
(2019)
Dynamic mechanical properties of magnetorheological elastomers: Experiment and modelling.
IOP Conference Series: Materials Science and Engineering, 559 (1), [012001].
(doi:10.1088/1757-899X/559/1/012001).
Abstract
As a kind of smart material, magnetorheological elastomer (MRE) is composed of magnetizable particles dispersed in an elastomer matrix. Because adjusting an external magnetic field can continuously, rapidly and reversibly control the dynamic properties, there has been increasing research on MRE for mitigation of unwanted vibrations. In this paper, the dynamic mechanical analysis tests were performed to investigate the influence of strain, frequency and magnetic field on the controllable dynamic properties. The storage modulus and loss modulus of MRE were analyzed with frequencies from 1 to 50 Hz, strain amplitudes from 1 to 6% and magnetic field intensities from 0 to 500 mT. The results show that the storage modulus decreases with increasing strain amplitude, increases with frequency and magnetic strength, and remains constant when the magnetic saturation occurs. Furthermore, the dependence of loss modulus on frequency lies on the matrix material of MRE. Based on the experimental results, a fractional derivative model was developed to describe the viscoelastic properties and the controllable dynamic properties. The comprehensive study of mechanical property characterisation is a guarantee for constitutive models to accurately describe the dynamic behaviour of MRE, which is an essential step towards the application for vibration control.
Text
Zhu_2019_IOP_Conf._Ser.%3A_Mater._Sci._Eng._559_012001
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e-pub ahead of print date: 25 June 2019
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2nd International Conference on Smart Materials Applications, ICSMA 2019, , Tokyo, Japan, 2019-01-19 - 2019-01-22
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Local EPrints ID: 432858
URI: http://eprints.soton.ac.uk/id/eprint/432858
ISSN: 1757-8981
PURE UUID: 74f324d9-130f-4fd7-a9d5-6c5b1a6d57a6
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Date deposited: 31 Jul 2019 16:30
Last modified: 06 Jun 2024 01:39
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Author:
G. H. Zhu
Author:
Z. G. Li
Author:
L. Xiao
Author:
M. Li
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