Phononic crystal negative Poisson's ratio honeycomb vibration isolation and shock resistance device

Abstract

The invention provides a photonic crystal negative poisson ratio honeycomb vibration isolation anti-impact device. The device comprises a vibration isolator upper panel (1), a vibration isolator lower panel (2) and a negative poisson ratio honeycomb core (3) which are connected through welding; and the device further comprises a lead block (4) and a rubber block (5) which are bonded into a whole to be embedded into a honeycomb unit. The lower panel of the device is connected with the floor through a bolt, mechanical equipment is placed on the upper panel to be connected through a bolt. The adjustable parameters of the device are wide and comprise the thicknesses of the upper panel and the lower panel, the number of layers, the angle and the wall thickness of the honeycomb core, the thicknesses of the rubber block and the lead block and the like. The sizes of the lead block and the rubber block are changed, and therefore assigned frequency point dynamics response damping effect can be achieved. The good damping effect is achieved, and the device is suitable for solving the low-frequency vibration problem; and the wide damping band gap character in the low-frequency band is achieved, the shortcoming that a traditional equipment base is heavy and low in efficiency is overcome, and a new field is exploited for application of a photonic crystal combined negative poisson ratio honeycomb structure to engineering.

Description

technical field [0001] The invention relates to a vibration isolation and anti-shock device, in particular to a phononic crystal negative Poisson's ratio honeycomb vibration isolation and anti-shock device. Background technique [0002] The development of high-efficiency light-weight vibration isolation and shock-resistant devices is a frontier topic in the design and research of mechanical equipment noise and vibration comfort. Traditional vibration isolation and shock resistance devices mainly include single-layer vibration isolation system, double-layer vibration isolation system and floating raft vibration isolation system. [0003] Because the single-layer vibration isolation system is simple and effective, it is widely used in engineering, but it has obvious disadvantages: (1) When the disturbance frequency of the machine is low, the stiffness of the vibration isolator must be designed to be very small, and the system stability is poor; (2) ) The combined result of th...

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Problems solved by technology

[0021] In view of the defects in the prior art, the purpose of the present invention is to provide a phononic crystal negative Poisson's ratio honeycomb vibration isolation and anti-shock device, which solves the problem that the current vibration isolation and anti-shock device has few adjustment parameters, the device has a large mass, and the low-frequency vibration isolation performance is low. bad question

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