4.4 Article

Experimental Study on Rolling Friction Coefficient Controllability of Magnetorheological Elastomer

Journal

Publisher

ASME
DOI: 10.1115/1.4050086

Keywords

rolling friction coefficient; slip rate; magnetorheological elastomers; dry friction

Funding

  1. National Research Foundation of Korea (NRF) - Ministry of Education, Science and Technology of the Korean Government [NRF-2018R1D1A1A09084239]
  2. Project of Shandong Provincial Agricultural Science and Technology Foundation (Forestry Science and Technology) [2019LY008]
  3. Science and Technology Support Program for Youth Innovation Team in Colleges and Universities of Shandong Province, China [2020KJF012]
  4. Postdoctoral Research Fund of Shandong Agricultural University [760092]

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Magnetorheological elastomers (MREs) are smart materials that can change their stiffness and shear modulus by applying an external magnetic field, making them suitable for controlling rolling friction coefficient. The research shows that applying a magnetic field can adjust the rolling friction coefficient, expanding the range of control over rolling friction coefficient and slip rate in the system.
Magnetorheological elastomers (MREs) are smart materials whose stiffness and shear modulus can be changed by applying an external magnetic field. They can be used in various ways. This experimental study looks at the rolling friction coefficient controllability of MREs. MRE samples were manufactured, and their rolling friction properties were measured by a rolling friction test, in which the input magnetic field strengths and rolling speed can be adjusted. Various speed conditions were applied to find the rolling friction properties under different applied magnetic field strengths. The rolling friction coefficient and slip rate control under a magnetic control were then analyzed. The results show that the rolling friction coefficient can be adjusted at different rolling slip rates by the application of a magnetic field, which can increase the rolling friction coefficient range in the control system of the rolling friction coefficient and slip rate. Based on the results of this research, MREs could someday be used in antilock brake systems as a stiffness-control material when a controlled magnetic field is applied, and the rolling friction efficiency could be increased.

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