Abstract
Magnetorheological grease is a smart material that can be reversibly rheologically stimulated by an external magnetic field and has high suspension stability and high saturation magnetization. The preparation method of magnetorheological grease and the factors affecting the performance of magnetorheological grease sealing liquid were investigated in this study. To reduce the loss of adhesion of greases and improve the uniformity of magnetic particles during the preparation of magnetorheological grease, a method of magnetic permeation preparation was developed. The study utilizes a combination of finite element calculation and experimental analysis to investigate the pressure resistance of magnetorheological grease sealing liquids and the crucial influencing factors of the seal's temperature rise and friction torque. The effects of coolant temperature and flow rate on reducing temperature rise were investigated. The findings indicate that the pressure resistance of magnetorheological grease sealing liquid is affected by the saturation magnetization, viscosity, yield stress, density of the magnetorheological grease, as well as the molecular weight, density and viscosity of the sealed liquid.
Published Version
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