A magnetorheological elastomer torsional shock absorber

Abstract

The invention relates to a magnetorheological elastomer torsion damper. The magnetorheological elastomer torsion damper comprises a damper shell fixedly connected with a crankshaft, a coil support arranged on the outer side of the damper shell in a sleeving manner and fixedly connected with an engine shell, an electromagnetic coil wound around the coil support, a current controller electrically connected with the electromagnetic coil, and a magnetorheological elastomer unit arranged on the damper shell in a sleeving manner and used in cooperation with the electromagnetic coil. In the work state, the current controller adjusts the current of the electromagnetic coil, the electromagnetic coil generates a magnetic field with the corresponding intensity, accordingly, friction damping of the magnetorheological elastomer unit is changed so that energy for torsion vibration can be consumed, and resonance is avoided. Compared with the prior art, the magnetorheological elastomer torsion damper is simple and compact in overall structure, friction damping is adjustable, wire leading is easy, the coil support is fixed to the engine shell, wiring is convenient, operation is more convenient and rapid, safety and reliability are achieved, and very good application prospects are achieved.

Description

technical field [0001] The invention belongs to the technical field of shock absorbers, and relates to a magneto-rheological elastic body torsional shock absorber. Background technique [0002] Magneto-rheological elastomer functional composite materials are prepared by dispersing micron or nano-sized soft magnetic particles in different types of carriers. Because their rheological properties can change continuously, rapidly and reversibly with the applied magnetic field, the magneto-sensitivity intelligent Soft materials have been widely used in fields such as construction, vibration control, and automotive industry, and have attracted increasing attention. [0003] The crankshaft is a shaft with certain elasticity and rotating mass, that is, a torsional elastic system, which itself has a certain natural frequency. During the working process of the engine, each crank throw of the crankshaft relative to the flywheel at the rear section of the shaft will undergo relative vib...

AI Technical Summary

Problems solved by technology

However, the traditional rubber torsional damper has the disadvantages of poor damping effect and narrow adjustment frequency range

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