Cylindrical Mr Fluid Coupling Design And Experimental Study

MRF (Magnetorheological Fluids, MRF) is one kind of smart materials which are emerging recently. Because of its unique rheological effect, good properties and potential wide applications, it is considered as one of the most promising new smart materials in the field of materials science. This paper tries to apply a MRF to overload transmission with a shock absorber and clutch controlling. This means that MRC must been increased its torque to a new order of magnitude as a torque transmission gear. Meanwhile MRF will need higher requirements, not only need high quality fluids, but also require the structure of MRC, external power supply and dynamic input parameters to be designed. Firstly, this article describes the magnetorheological fluids,its development and contributions that have been made. From the magnetic mechanism of the rheological fluids in this paper, formulas for the theoretical MRC designs are derived which account for the Magnetorheological Fluid Coupling in the shear mode (Magnetorheological Coupler, the following are referred as MRC).In theory, MRC working principle and structure are also detailed analyzed by using PRO / E and ANSYS computer modeling and simulation software. Immediately, on the basis of theoretical analysis and CAJCZ-A mechanical transmission testing platform, MR fluid coupling prototype has been designed. In the last the prototype was experimental studied. This study includes the following topics:1. Introducing the MRF and the theory and application of the device status and development, explaining the importance of MR technology and feasibility of specific design and research of this task and content.2. From the MRF working models, deducing the theoretical formulas of disc and cylindrical magneto-rheological fluid coupling in the shear working mode, analysising identified that cylinder MRC can deliver more torque.3. The structure of the MRC, the work of MRF gap, magnetic coil and sealing structure are designed, and ultimately producing an experimental prototype and experimental platform.4. Using ANSYS finite element tools to analyze the magnetic field of the working area MRF, obtained an average magnetic field strength of magnetic field and the relationships between the current and them.5. Relying on experimental platform, MRC working performance were studied, obtained a series of key conclusions one of which is that MRC torque approaches a determinate limits value.