Metamaterial vibration isolator

Abstract

The invention belongs to the technical field of vibration and noise reduction and particularly relates to a vibration isolator. The metamaterial vibration isolator comprises a metamaterial vibration isolation component and other components serving as structural components, namely an upper end cover, a limiting protective hood, a lower base plate, surface rubber coating layers, fastening bolts, a bottom implanted framework, an upper implanted framework, rubber plugs and a sealing gasket. According to the metamaterial vibration isolator, the metamaterial technology is utilized; limitation of certain apparent natural laws of traditional vibration isolation materials is broken through; the metamaterial function exceeding common intrinsic properties of original substrates is achieved, and thus the contradiction generated between low intrinsic frequency and large static deformation of a vibration isolator can be well regulated; the vibration isolation effect in the main bearing direction and anti-swinging performance in the non-bearing-direction of the vibration isolator are achieved at the same time; and a new path is provided for reducing vibration and noise of a ship or warship.

Description

technical field [0001] The invention belongs to the technical field of vibration reduction and noise reduction, in particular to a vibration isolator. Background technique [0002] With the development of modern industry, mechanical equipment is gradually developing in the direction of large-scale, high-speed and complex, and the problems of vibration and noise are becoming more and more prominent. As the most important platform for sea power competition, ships have increasingly high requirements for underwater acoustic stealth performance, and low-frequency vibration of mechanical noise is one of the main noise sources of ships. [0003] The use of vibration isolators is an effective way to reduce mechanical noise. To improve the vibration isolation effect of mechanical equipment in the low frequency band, it is necessary to reduce the vertical stiffness of the vibration isolator. While reducing the vertical stiffness, there is often a too low stiffness in the non-loading ...

AI Technical Summary

Problems solved by technology

However, due to the complexity of the metamaterial's own structure and high precision requirements, traditional methods such as rubber vulcanization cannot guarantee the fine design requirements of its structure, and it is difficult to achieve the goal of its extraordinary physical properties.

Images