A single-mass phononic crystal vibration isolator with adjustable bandgap based on stress stiffening effect

Abstract

The invention discloses a single substance phonon crystal vibration isolator based on stress rigidization effect adjustable bandgap. The single substance phonon crystal vibration isolator comprises anupper base seat, a lower base seat, a wire concentrating device and a direct current power source, a plurality of vibration isolation phonon crystal supporting shafts are distributed and arranged between the upper base seat and the lower base seat, each vibration isolation phonon crystal supporting shaft is provided with a set of phonon crystal unit components in a sleeved manner, each phonon crystal unit is detachably assembled with a pair of electromagnets with same poles being opposite, the electromagnets on the phonon crystal units of the same set are connected in series with each other to form a closed circuit, each closed circuit loop is connected with the wire concentrating device through a wire, and the wire concentrating device is connected with the direct current power source. By means of the single substance phonon crystal vibration isolator based on the stress rigidization effect adjustable bandgap, the problems that the bandgap of the current phonon crystal vibration isolators is unadjustable, the preparation process is complex and the vibration isolation frequency range is narrow can be solved.

Description

technical field [0001] The invention belongs to the technical field of vibration isolation, and relates to a vibration isolator, in particular to a single-mass phonon crystal vibration isolator with an adjustable band gap based on a stress stiffening effect. Background technique [0002] Various vibration problems exist in fields such as mechanical manufacturing, aerospace and other engineering fields. Excessive harmful vibrations often lead to fatigue damage or failure of structures and equipment, especially for cutting-edge equipment with high environmental requirements. At present, the methods to reduce the vibration of mechanical structures can be mainly divided into two categories: one is to control the vibration source, that is, to reduce the generation of vibration and noise. On the one hand, structural optimization design can be used to improve manufacturing accuracy and reduce installation errors. The second is to take measures such as isolation and attenuation to ...

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Problems solved by technology

[0005] The purpose of the present invention is to provide a single-mass phononic crystal vibration isolator with an adjustable band gap based on the stress stiffening effect, which can solve the problem that the band gap of the current phononic crystal vibration isolator cannot be adjusted, the preparation process is complicated, and the vibration isolation frequency range is relatively large. narrow question

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