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Research Papers: Applications

Application Study of Magnetorheological Elastomer to Rolling Friction Control

[+] Author and Article Information
Chenglong Lian, Kwang-Hee Lee

Department of Mechanical Engineering,
Inha University,
Incheon 402-751, South Korea

Chul-Hee Lee

Department of Mechanical Engineering,
Inha University,
Incheon 402-751, South Korea
e-mail: chulhee@inha.ac.kr

Contributed by the Tribology Division of ASME for publication in the JOURNAL OF TRIBOLOGY. Manuscript received September 22, 2016; final manuscript received February 8, 2017; published online May 26, 2017. Assoc. Editor: Alan Palazzolo.

J. Tribol 139(5), 051101 (May 26, 2017) (5 pages) Paper No: TRIB-16-1292; doi: 10.1115/1.4036173 History: Received September 22, 2016; Revised February 08, 2017

Magnetorheological elastomers (MREs) are smart materials that have been studied widely for their material properties. The elasticity modulus or hardness of an MRE can be changed when an external magnetic field is applied. In this study, a study of MREs applied to rolling friction control under various external magnetic strengths is conducted. To accomplish this, the rolling friction property of an elastomer on a rigid plate is analyzed. Then, MREs are prepared, and a rolling friction tester is designed to evaluate the changes in the rolling friction coefficient. The results show that the rolling friction coefficient can be changed with different magnetic field strengths. The rolling friction coefficient of the MRE can be controlled by the applied magnetic field, which can be applied to control the slip rate and be adapted to achieve the optimal friction effect in the future.

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Figures

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Fig. 1

Analytical model of rolling friction of an elastomer

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Fig. 2

Schematic diagram of a prepared isotropic MRE

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Fig. 3

SEM images of the cross sectioned MRE: (a) distribution of CI particles and (b) distribution of voids

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Fig. 4

MRE specimen: (a) photograph of an MRE sample with electromagnets and (b) dimension of an MRE sample

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Fig. 5

Schematic diagram of rolling friction tester

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Fig. 6

Magnetic field strength of electromagnet and hardness of MRE with respect to the current intensity

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Fig. 7

Rolling friction coefficient of MRE versus rolling distance at different magnetic field strengths

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Fig. 8

Result of mean rolling friction coefficient of an MRE sample at different magnetic field strengths

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Fig. 9

Modeling of experimental values and theoretical values of rolling friction coefficient of the MRE

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