Hybrid multi-plate magnetorheological clutch featuring two operating modes: Fluid coupling and mechanical friction

Abstract

Recently, there has been a rising demand for high-performance clutches in mechanical systems owing to the development of industrial technologies. This paper, therefore, proposes a hybrid multi-plate Magnetorheological (MR) clutch that has both fluid coupling and mechanical friction modes. To reduce impact when the plates are in contact with each other, a fluid coupler’s operating mode was used at the beginning of the clutch operation. For this, torque modeling in each mode was induced based on the Bingham model of the MRF. Using the induced torque modeling and ANSYS Maxwell’s magnetic field analysis results, the design procedure for a multi-plate clutch was implemented. Based on the design results, a hybrid multi-plate MR clutch was manufactured. Finally, the performance of the manufactured MR clutch was evaluated using a torque tester. The assessment confirmed that the proposed torque modeling and simulation results mostly matched the test results.

A Study on Power Transmission Control for Applying MR Fluid Multi-Plate Clutch to Automobile Power Distribution Device

“…The viscosity coefficient can be obtained through the saturated viscosity coefficient η ∞ , the natural viscosity coefficient η 0 , and the viscosity coefficient saturation moment σ Sη in the Y term of Equation (3). The yield stress can be obtained through the saturated yield stress τ y∞ , the natural yield stress τ y0 , and the yield saturation in the Y term can be obtained with the saturation moment σ Sτ y [19]. Friction clutches create power transmission through engagement between the disc and the plate that connect the power and the load.…”

“…Considering the above, the MR fluid multi-plate clutch was designed, as shown in Figure 1. For more details, including the detailed geometry of the MR clutch, see the authors' previous research [19].…”

“…Mattia Filippini et al proposed a magnetic gear (MG) that achieves the same functions as a differential while having unique advantages such as reduced maintenance and high efficiency, and they verified it through experiments and simulations [16]. Many studies have been conducted on power transmission devices using MR fluid in automobiles, but most of them involve the power transmission using only the sheer force of the MR fluid; thus, there has been no research conducted that addresses power transmission through mechanical friction [17][18][19].…”

Experimental Study on Magnetorheological Damper Prototype and Obtaining Its Equivalent Damping Coefficients

“…MR fluids typically contain range of 20-80 wt% of carbonyl iron and range of 1-3 wt% of fumed silica in the literature [3,5]. Looking at the studies, MR fluids are used in automotive suspension [6][7][8], brake [9][10][11] and clutch [12,13] systems. There are many studies in the literature about its use, especially in semi-active suspension systems.…”

Characteristic analysis of magnetorheological fluid porous fabric composite with a novel constitute model

“…MR fluid (MRF) changes from liquid state to solid-like state reversely under external magnetic fields with milliseconds [2,3]. Due to significant advantages like large damping force [4], controllability [5] and fast response properties of MR elastomer can be changed dynamically by external magnetic fields [15]. The nature frequency of selfprepared anisotropic MR elastomer was increased by 507% [16].…”