Eddy current tuned mass damper with adjustable frequency that can be assembled in series

Abstract

The invention discloses a frequency-adjustable eddy current tuned mass damper capable of being serially assembled. The frequency-adjustable eddy current tuned mass damper comprises an outer cylinder, an inner cylinder and a damping part, wherein the outer cylinder and the inner cylinder are concentric cylinders, the outer cylinder sleeves the inner cylinder, and flange plates are mounted at two ends of the outer cylinder; the damping part is mounted in the inner cylinder and comprises a base plate, an end vertical plate, an electromagnet, a base conductor mass block, adjusting conductor mass blocks, spiral springs and secondary spiral springs, and the conductor mass blocks are respectively connected with the base plate and the end vertical plate through the spiral springs and the secondary spiral springs. The frequency-adjustable eddy current tuned mass damper has the advantages that the damping part and the inner cylinder are fixed together to achieve multi-angle vibration resistance, serial assembling of multiple dampers can be achieved by the flange plates on the outer cylinder, and TMD inherent frequency can be adjusted by adjusting the conductor mass blocks or the springs; TMD damping ratio can be controlled by adjusting the distance between a permanent electromagnet and the conductor mass blocks or controlling the magnetic field intensity of the electromagnet; TMD vibration is completely controlled by the springs, and friction damping is avoided.

Description

technical field [0001] The invention relates to a passive control device for energy consumption and vibration reduction, in particular to a frequency-adjustable eddy current tuning mass damper that can be assembled in series, and belongs to the field of vibration control of civil engineering structures. It is used to reduce the vibration response of bridge structures under external loads such as earthquakes, wind, and vehicles. Background technique [0002] With the development of design technology and building materials in civil engineering, modern bridge structures are becoming more and more long, thin, light, soft and low damping. Many light and long-span bridges have been built in various places. Such bridges are prone to large deformation and vibration under dynamic loads such as earthquakes, wind, and vehicles. The vibration of bridge structure is an important factor causing bridge damage (destruction). The main factors causing bridge vibration are: vibration caused ...

AI Technical Summary

Problems solved by technology

[0005] Purpose of the invention: Aiming at the problem that the existing damper can only realize vibration control in one direction, the present invention provides a multi-angle anti-vibration frequency-adjustable eddy current tuned mass damper, which realizes multi-angle consumption by changing different working angles. Can reduce vibration

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