Abstract
The effect of surface roughness on the stick-slip motion of Magnetorheological (MR) fluids under a simple linear shear mode has been experimentally reported. The shear stress of the MR fluids could be modulated by the changing of the surface roughness. The rate of energy accumulation and releasing during stick-slip motion changed with respect to the shear plates of different surface roughness. The changing of the stick-slip motion based on the different surface roughness was ascribed to the evolution of internal particle structures when shear motion was applied to the aggregates of the particles exposed to the external magnetic field.
Highlights
Various phenomena [1, 2] have been involved during the friction process, indicating the properties of the rubbing materials and mechanism of interaction
Considering the morphology of the shear plates used in the experiments, the shear stress should be noted
The relative changing of the shear stress can be more obvious when the higher external magnetic field was applied
Summary
Various phenomena [1, 2] have been involved during the friction process, indicating the properties of the rubbing materials and mechanism of interaction. Research concerns more about the properties and mechanisms of the stick-slip motion due to the characterization of the materials and some focus on controlling and modulations[5,6]. Mechanical properties of electrorheological(ER) and magnetorheological (MR) fluids can be dramatically changed once exposed to the external electric/magnetic field [7,8]. This provides two controllable phases of one matter, the possibility in the modifying the energy consuming process
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