Active control SMA metal rubber shock absorber and vibration isolation performance adjusting method

Abstract

The invention discloses an active control SMA metal rubber shock absorber and a vibration isolation performance adjusting method, and belongs to the field of vibration and impact protection. The problems that an existing vibration isolator is simple in structure, has natural frequency and fixed rigidity and cannot be adjusted to be applicable to various working conditions are solved. The shock absorber comprises an SMA metal rubber blank and insulated electric heating wires which are uniformly distributed in the SMA metal rubber blank, and the SMA metal rubber blank and the insulated electricheating wires are stamped into an integral piece. The temperature of the SMA metal rubber shock absorber is adjusted by changing the current introduced into the insulated electric heating wires, and the rigidity, the natural frequency, the transmission rate and the energy dissipation coefficient of the SMA metal rubber shock absorber are adjusted according to the change of the temperature of the SMA metal rubber shock absorber. The shock absorber is mainly used for vibration reduction.

Description

technical field [0001] The invention belongs to the field of vibration and impact protection. Background technique [0002] With the rapid development of the aerospace industry today, the application of vibration-damping materials in various spacecraft will face new challenges, especially in some special and harsh industries where traditional vibration-damping materials (such as ordinary rubber damping materials) are used. Faced with severe challenges under the conditions. In the service cycle of the current spacecraft, it is often affected by vibration and shock in the special environment, and among the various reasons for failure, most of them are due to factors such as engine and aerodynamic noise, which may lead to excessive The large broadband random vibration band and noise environment will then cause multiple resonance peaks in the electronic control and instrumentation of the mechanical structure, causing structural failure of the corresponding equipment, resulting ...

AI Technical Summary

Problems solved by technology

[0006] The purpose of the present invention is to solve the problem that the existing vibration isolator has a simple structure, and its natural frequency and stiffness are fixed and cannot be adjusted, so that it cannot be applied to various working conditions. The present invention provides an active control SMA metal rubber vibration damping Device and vibration isolation performance adjustment method

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