Low-frequency, broad-band and local-area resonance structure with super damping characteristics

Abstract

The invention provides a low-frequency, broad-band and local-area resonance structure with super damping characteristics. The structure comprises a rhombic frame; a first end of the rhombic frame is connected with a basal body beam through a rubber block; rubber bars are arranged on short diagonal lines in the rhombic frame; and one ends of the rubber bars are connected with the first end of the rhombic frame, and the other ends are connected with a second end of the rhombic frame. Mass blocks are arranged at two ends of the rhombic frame, and the structure is periodically added on a beam unit, so that the low-frequency band gap is widened, and the vibration attenuation is enhanced. The structure is better in geometric nonlinearity, can generate additional damping and mass, and effectivelyimproves low-frequency vibration characteristics of a system.

Description

technical field [0001] The invention relates to the technical field of vibration propagation isolation, in particular to a low-frequency broadband local resonance structure with super-damping characteristics. Background technique [0002] In order to realize the control of mechanical vibration, the prior art mainly controls the vibration source and the propagation of vibration. Vibration source control means: select low-vibration equipment as the vibration source or perform vibration isolation on the vibration generated by the vibration source used, and control the transmission of vibration by changing the way of vibration transmission to achieve vibration suppression. [0003] Controlling the propagation of vibration includes active control and passive control. Using active control to control vibration propagation requires adding a control system to the structure of the vibration propagation path. This control method increases the complexity of the structure. Passive cont...

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