Novel magnetorheological elastomer normal force test platform

Abstract

The invention relates to a novel magnetorheological elastomer normal force test platform which comprises a power part, a test part and a control part. The power part comprises a motor and a ball screwmechanism. The test part comprises a magnetic conductive base, a magnetic conductive cross beam, a magnetic core column, a coil, an upper magnetic conductive shell, a lower magnetic conductive column, a pressure sensor and an extrusion rod mechanism, the magnetic conductive base and the magnetic conductive cross beam are oppositely and fixedly arranged, the upper end of the upper magnetic conductive shell is fixedly connected with the magnetic conductive cross beam, the lower end of the lower magnetic conductive column is fixedly connected with the magnetic conductive base, and the upper magnetic conductive shell is connected with the lower magnetic conductive column through a magneto-rheological elastomer. Due to the fact that the magnetic conductive base and the magnetic conductive cross beam are relatively fixed, the gap distance (the gap is filled with the magnetorheological elastomer) between the upper magnetic conductive shell and the lower magnetic conductive column is also fixed, the distance between an upper magnetic pole and a lower magnetic pole of the magnetorheological elastomer is fixed along with compression of the magnetorheological elastomer, and the constancy ofthe magnetic field in the magnetorheological elastomer is guaranteed.

Description

Technical field [0001] The invention relates to the field of performance testing of smart materials, in particular to a new type of magnetorheological elastomer normal force testing platform. Background technique [0002] Magnetorheological elastomer is a new type of smart material. It is composed of magnetic particles, matrix and additives. Under the action of a magnetic field, the magnetic particles are distributed in chains along the direction of the magnetic field. The macroscopic expression is the output normal force and shear force. Therefore, the modulus of this material can vary with the applied magnetic field strength. And change. Compared with magnetorheological fluids, magnetorheological elastomers not only have the characteristics of controllability, reversibility, and sensitive response, but also have the advantages of good stability. Magnetorheological elastomers can be used in vibration reduction and noise reduction control in various engineering fields. [0003] ...

AI Technical Summary

Problems solved by technology

In the existing magnetorheological elastomer compression performance test platform, there are the following deficiencies: 1. During the process of compressing the magnetorheological elastomer, the distance between the upper and lower magnetic poles changes, making the measured magnetic induction inaccurate; 2. The existing The power device of the test platform is generally selected from the universal material testing machine, which consumes huge financial and material resources

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