Single-coil magnetorheological fluid normal stress testing device

Abstract

The invention relates to a single-coil magnetorheological fluid normal stress testing device. The single-coil magnetorheological fluid normal stress testing device includes an upper magnetic conduction plate, a steel I beam, an iron core, a lower magnetic conduction plate, a lower magnetic conduction shaft sleeve, a lower shearing shaft disc, an upper shearing shaft disc, an upper magnetic conduction shaft sleeve, a bearing sleeve, a motor support, a coupling and a motor; the upper magnetic conduction plate and the lower magnetic conduction plate are fixedly connected with each other through the steel I beam; one side of a space between the upper magnetic conduction plate and the lower magnetic conduction plate is connected with the iron core, and the other side of the space is provided with the upper shearing shaft disc and the lower shearing shaft disc; the upper shearing shaft disc is installed on the upper magnetic conduction plate through a ball bearing and the bearing sleeve; the motor is installed above the upper magnetic conduction plate through the motor support; the motor is connected with the upper shearing shaft disc through the coupling; and the lower shearing shaft disc is installed on the lower magnetic conduction plate through a linear bearing. According to the single-coil magnetorheological fluid normal stress testing device of the invention, a single-coil device is adopted, so that the whole structure of the single-coil magnetorheological fluid normal stress testing device is simple and compact, and easy to be assembled; and a non-magnetic O-shaped check ring is arranged at the outer edge of the lower shearing shaft disc, so that the climb of magnetorheological fluid can be prevented; and the steel I beam fixing structure is adopted, so that a gap of the upper shearing shaft disc and the lower shearing shaft disc can be ensured.

Description

technical field [0001] The invention relates to a single-coil magneto-rheological fluid normal stress test device, in particular to a magneto-rheological fluid normal stress test device. Background technique [0002] Magnetorheological fluid is a kind of intelligent material, which is mainly composed of magnetic particles, carrier liquid and surfactant. The suspended particles in the magnetorheological fluid condense into chains, columns, clusters or other complex network structures under the action of the magnetic field, so that the magnetorheological fluid exhibits a viscoplastic fluid state, and returns to low viscosity after the magnetic field is removed. Newtonian fluid state, the reversible transition phenomenon of magnetorheological fluid is called magnetorheological effect. Because the magnetorheological effect of magnetorheological fluid has the advantages of reversibility, controllability, and fast response, it has received extensive attention in many fields such ...

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Problems solved by technology

[0004] Most of the current magneto-rheological fluid performance test devices are designed for shear performance, but there are relatively few test devices for normal stress, so it is necessary to design a simple and easy test device to achieve

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