A quasi-zero stiffness vibration isolation device

Abstract

The invention discloses a quasi-zero-stiffness isolation mounting which comprises an upper cover plate, a pulley block, a shape-memory alloy wire, a workbench, a flexible thin-film, a fluid medium device and the like. According to the quasi-zero-stiffness isolation mounting, the shape memory alloy wire which is featured by extremely narrow width of the hysteretic curve is taken as an elastic element and is subjected to proprocessing to work in a hyperelasticity work interval. Within the hyperelasticity work interval, the resilience keeps constant nearly no matter the strain of the shape memory alloy wire increases or decreases, and thus, the shape memory alloy wire can be of basically constant static stiffness and basically zero dynamic stiffness. The quasi-zero-stiffness isolation mounting, utilizing the shape memory alloy wire as the elastic element, is effective in isolating ultra-low frequency vibration.

Description

technical field [0001] The invention relates to a quasi-zero stiffness vibration isolation device, more precisely, a vibration isolation device based on the superelastic mechanism of shape memory alloy wire. Background technique [0002] Vibration isolation devices can effectively isolate the vibration on mechanical equipment and reduce the harmful effects of vibration and noise, so they are an important part of equipment such as ships, vehicles and construction machinery. The increasingly integrated chip production process requires more and more sophisticated vibration isolation platforms to effectively isolate low-frequency micro-vibrations caused by the pulsation of the earth and tidal gravity. In the shipbuilding industry, floating raft vibration isolation technology has been able to effectively isolate high-frequency vibrations of ships for a long time, but there is no good isolation method for low-frequency vibrations. Whether low-frequency vibrations can be well contr...

AI Technical Summary

Problems solved by technology

In the shipbuilding industry, floating raft vibration isolation technology has been able to effectively isolate high-frequency vibrations of ships for a long time, but there is no good isolation method for low-frequency vibrations. Whether low-frequency vibrations can be well controlled has become a bottleneck in the development of submarines

In addition, the low-frequency vibration on the car seat will increase the probability of the driver suffering from low back diseases and bring them physical and mental harm. However, the isolation and suppression of dynamic excitation has always been difficult to solve The problem

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