Bidirectional regulation type multilayer magneto-rheological elastomer shock absorber

Abstract

The invention discloses a multilayer magneto-rheological elastomer shock absorber which is bidirectionally regulated in rigidity. The multilayer magneto-rheological elastomer shock absorber comprises a thin magneto-rheological elastomer layer, a thin magnetic conducting metal layer, a permanent magnet, an upper base and a lower base, wherein the thin magneto-rheological elastomer layer and the thin magnetic conducting metal layer are continuously in glued joint with each other and are superposed to form a magneto-rheological elastomer, the upper end and the lower end of the magneto-rheological elastomer are respectively in glued joint with the permanent magnet and then are installed between the upper base and the lower base, and the permanent magnet is in threaded connection with the upper base and the lower base. The multilayer magneto-rheological elastomer shock absorber further comprises a magnetic conducting framework and magnet exciting coils, wherein the magnetic conducting framework is nested or surrounds the inner side or the outer side of the multilayer magneto-rheological elastomer between the upper base and the lower base, the lower end of the magnetic conducting framework is fixedly connected with the lower base, and a gap is reserved between the upper end of the magnetic conducting framework and the upper base. The multilayer magneto-rheological elastomer and the magnetic conducting framework are provided with the magnet exciting coils, and a longitudinal section formed by the multilayer magneto-rheological elastomer and the magnetic conducting framework is in a shape of a Chinese character 'chuan'. The multilayer magneto-rheological elastomer shock absorber is compact in structure, simple in structure, large in working stroke and capable of saving a space and achieving bidirectional rigidity regulation.

Description

technical field [0001] The invention relates to the field of shock absorbers and intelligent materials, in particular to a two-way adjustable multilayer magnetorheological elastomer shock absorber. Background technique [0002] Vibration can cause a series of problems. For example, vibration can cause mechanical or structural fatigue or even fracture, and it can also have adverse effects on comfort. Passive shock absorbers are traditional vibration reduction equipment, and its vibration parameters such as stiffness and damping cannot be adjusted as the external working conditions change. With the continuous development of industry, passive shock absorbers can no longer meet the requirements of production and life. Therefore, active or semi-active shock absorbers with adjustable vibration parameters are developed. [0003] Magnetorheological fluid is a large class of field-induced rheological smart materials. Under the action of a magnetic field, its rheological properties ...

AI Technical Summary

Problems solved by technology

[0005] However, MRE shock absorbers are mostly single-layer, have a small working stroke, and can only be adjusted in one direction, that is, the stiffness can only be adjusted in the direction of becoming stronger

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