Horizontally tuned cantilever type eddy current damper

Abstract

The invention provides a horizontally tuned cantilever type eddy current damper. The horizontally tuned cantilever type eddy current damper comprises a mass unit, a connecting unit, a rigidity unit, anegative rigidity unit and an eddy current damping unit, wherein the mass unit comprises a balancing weight; the connecting unit comprises a bearing component, an outer connecting plate and a trapezoidal support; the rigidity unit comprises a cantilever plate; the negative rigidity unit comprises a moving permanent magnet, a fixed permanent magnet, a mounting backup plate and a limiting cushion block a; and the eddy current damping unit comprises a low-speed end permanent magnet, a high-speed end permanent magnet, a guide rail, a sliding block, a magnetic adjusting plate, a conductor plate and a back iron. According to the horizontally tuned cantilever type eddy current damper, the magnetic field modulation principle and the concept of a negative rigidity nonlinear energy trap are applied, the moving speed of the high-speed end permanent magnet is increased through the magnetic adjusting plate, and the energy consumption efficiency of the damper is improved; and movement of the balancing weight can be promoted through the difference value of the attraction force between the different permanent magnets, so that the vibration reduction frequency band is widened, the robustness is better, and the problem that the vibration reduction effect is poor when a traditional tuned mass damper is imbalanced is solved.

Description

technical field [0001] The invention belongs to the field of vibration control devices for engineering structures, in particular to a cantilever type horizontal eddy current tuned mass damper with negative stiffness nonlinear energy wells. Background technique [0002] Structural vibration reduction using a tuned mass damper (TMD) is a kind of passive control technology for structural vibration. Inertia and reverse vibration, the main structure exerts a force opposite to the vibration direction, coupled with the energy dissipation effect of the damping unit, so that the vibration of the main structure is significantly attenuated. This device is widely used in the field of engineering structures, and it is installed in vibrating bridge structures or high-rise building structures, which has a very obvious suppression effect on structural vibrations. [0003] However, there is room for further improvement in the traditional horizontal eddy current tuned mass damper: 1. The ene...

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Problems solved by technology

[0007] But all still do not thoroughly solve above-mentioned two problems in above-mentioned invention

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