A Bandgap Adjustable Elastic Wave Isolator and Vibration Isolation Method Based on Liquid Added Mass Effect

Abstract

The invention discloses an elastic wave vibration isolator with an adjustable band gap based on the liquid virtual masseffect and a vibration isolation method. The elastic wave vibration isolator comprises uniaxial vibration isolation cylinders, a central fixed plate and a plurality of detachable buckles. The uniaxial vibration isolation cylinders are of a column structure formed by connecting a plurality of vibration isolation unit cells in sequence, and inner cavities of the vibration isolation unit cells are filled with internal filling fluid. The detachable buckles are distributed on the outer circumference of the central fixed plate in the circumferential direction of the central fixed plate, the detachable buckles are provided with guiding structures for limiting the uniaxial vibration isolation cylinders, the uniaxial vibration isolation cylinders are arranged in the guiding structures, the longitudinal direction of the uniaxial vibration isolation cylinders is perpendicular tothe plane in which the central fixed plate is located, and an input base for introducing vibration source signals and an output base connecting with a next level device are separately connected to thevibration isolation unit cells at both ends of each uniaxial vibration isolation cylinder. The elastic wave vibration isolator with the adjustable band gap based on the liquid virtual masseffect cansolve the problem that band gaps of vibration isolation devices are difficult to adjust and prepare at present.

Description

technical field [0001] The invention relates to an elastic longitudinal wave vibration isolator in the technical field of mechanical vibration isolation, in particular to an elastic wave vibration isolator with adjustable band gap and a vibration isolation method based on the liquid additional mass effect. Background technique [0002] In the field of industrial production and daily life, mechanical vibration and noise in specific frequency bands will greatly affect the health and safety of structures. For example, the occurrence of undesired resonance phenomena will pose a serious threat to the safety and stability of structures. Therefore, safe and effective vibration control and adjustment devices have extremely broad application prospects in related fields. [0003] At present, the control and adjustment methods of mechanical vibration with harmful nature can be roughly divided into three types. One is to reduce the energy transmitted by the vibration source by optimizi...

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Problems solved by technology

[0006] In order to solve the problems existing in the prior art, the object of the present invention is to provide a bandgap adjustable elastic wave isolator and vibration isolation method based on the liquid additional mass effect, the vibration isolator of the present invention can solve the current elastic longitudinal wave isolation Difficult to adjust the bandgap of the resonator and difficult to prepare

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