Two-dimensional magnetic force type nonlinear energy trap device and vibration absorption and energy consumption method

Abstract

The invention relates to a two-dimensional magnetic force type nonlinear energy trap device and a vibration absorption and energy consumption method. The device comprises a base connected with an external main structure, a rotating chassis, a platform plate used for arranging a nonlinear energy trap, a friction guide rail, a short guide rail, a vibrator, a plurality of permanent magnets, a spring clamp and a multilateral wheel set. The rotating chassis is fixed on the base and is connected with the platform plate, and the platform plate can rotate on the rotating chassis; a friction guide rail, a short guide rail, a permanent magnet and a vibrator are arranged on the platform plate; and the vibrator is provided with permanent magnet blocks which repel the guide rail magnets. The structure forms a magnetic force type nonlinear energy trap structure, the vibrator is not located at the center of the mass of the device in a steady state, and when the vibrator is vibrated, the vibrator has eccentric torque relative to the rotating chassis, so that the platform plate can rotate to the vibration direction in a two-dimensional plane, and the vibrator captures the vibration in the plane; and the vibration absorption and energy consumption of the nonlinear energy trap on the vibration of the main structure in the two-dimensional plane are realized.

Description

technical field [0001] The invention relates to a structural vibration reduction and energy consumption device, in particular to a two-dimensional nonlinear energy well device and a vibration absorption and energy consumption method, which belongs to the nonlinear energy well device, and specifically to civil engineering structure vibration reduction technology field. Background technique [0002] The nonlinear energy well is a passive control technology, mainly composed of light weight, strong nonlinear stiffness and damping elements. The nonlinear energy well can capture a series of modes of instantaneous resonance with the main vibration structure, so it has a wide frequency band for vibration reduction, and can realize the directional transmission of energy from the main structure to the quality of the nonlinear energy well. Within a certain parameter range, the vibrator It can quickly, efficiently and irreversibly absorb and dissipate the broadband and transient impact...

AI Technical Summary

Problems solved by technology

However, when subjected to wind vibration, earthquake, etc., the vibration of the main structure may come from all directions, and it is difficult for a single-directional nonlinear energy well or their superposition to achieve vibration absorption and energy dissipation in random directions in a two-dimensional plane.

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