Magnetorheological fluid performance evaluation method and system

Abstract

The invention belongs to the technical field of intelligent materials. The invention discloses a magnetorheological fluid performance evaluation method. Corresponding weight coefficients are respectively given to a contact angle, a friction coefficient, a zero-field viscosity value and a yield stress value of magnetorheological fluid; then, the viscosity value and the yield stress value of the carrier liquid of the magnetorheological fluid are matched; finally, performance evaluation indexes of the magnetorheological fluid are obtained. Therefore, the contact angle, the friction coefficient, the zero-field viscosity value and the yield stress value of the magnetorheological fluid are comprehensively considered; according to the magnetorheological fluid performance evaluation method, the systematic and scientific performance evaluation indexes are obtained, reasonable performance evaluation is conducted on different prepared magnetorheological fluids through the performance evaluation indexes, and therefore the different magnetorheological fluids can be conveniently selected according to different application scenes, and then the use efficiency of the magnetorheological fluids is greatly improved. The invention further discloses a magnetorheological fluid performance evaluation system which is used for implementing the magnetorheological fluid performance evaluation method.

Description

technical field [0001] The invention belongs to the technical field of intelligent materials, and in particular relates to a method and system for evaluating the performance of a magnetorheological fluid. Background technique [0002] As a new fluid smart material with controllable performance, low energy consumption, high output and fast response, magnetorheological fluid is rapidly emerging and has attracted extensive attention from many scholars. In the case of zero magnetic field, magnetorheological fluid has good fluidity like Newtonian fluid. When in the state of strong magnetic field, it can increase the viscosity of two orders of magnitude in milliseconds, and immediately presents solid-like characteristics, and transforms The strength increases with the increase of the magnetic field strength, which is positively correlated. Magneto-rheological fluid is applied to devices, and the stress of the fluid can be changed by changing the magnetic field strength of the ext...

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Problems solved by technology

[0004] However, the problem with the existing evaluation methods is that, because the application scenarios of magnetorheological fluids are many and complex, the existing evaluation methods are simple and rough, which makes it impossible to carry out the evaluation of magnetorheological fluids according to the needs of the application scenarios. Scientific evaluation in order to select magnetorheological fluids of different preparations, resulting in excess or insufficient quality of magnetorheological fluids in use, thus reducing the use efficiency of magnetorheological fluids

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