Two-dimensional eccentric rotation nonlinear energy sink device and vibration absorption and energy consumption method

Abstract

The invention discloses a two-dimensional eccentric rotation nonlinear energy sink device and a vibration absorption and energy consumption method. The two-dimensional eccentric rotation nonlinear energy sink device comprises a base connected with an external main structure and a rotating disc, wherein the rotating disc is arranged on the base, and a spring clamp is arranged on the rotating disc; a friction guide rail is connected to the rotating disc through a buckle; a support guide rail is vertically connected with the friction guide rail through a buckle; the support is connected to the support guide rail through a buckle; a vibrator is arranged on the friction guide rail to slide; and tension and compression springs are hinged to the support and the vibrator and are symmetrically arranged on the two sides of the vibrator. The two-dimensional eccentric rotation nonlinear energy sink device is advantaged in that the nonlinear energy trap structure can be rotated according to the plane vibration direction of the main structure, and vibration energy can be absorbed and dissipated in any direction of a two-dimensional plane.

Description

technical field [0001] The invention relates to a vibration reduction and energy consumption device, in particular to a two-dimensional eccentric rotating nonlinear energy well device and a vibration absorption and energy consumption method. Background technique [0002] Nonlinear energy wells are a passive control technique and can achieve targeted energy transfer. The nonlinear energy trap device mainly uses the nonlinear restoring force obtained by springs, magnets, buckling beams, rotation, linear stiffness superposition, etc., and can quickly transfer the vibration energy of the main structure to the vibrator through nonlinear stiffness, and the vibrator then passes the energy through damping. Dissipation, the vibration energy does not return to the main structure, so as to realize the vibration reduction of the main structure. It has the advantages of simple structure, wide frequency band of vibration absorption, high reliability, no need for additional energy, etc., ...

AI Technical Summary

Problems solved by technology

[0003] In the existing nonlinear energy trap devices, most of their vibrators reciprocate on the guide rail with a single direction, so they can only produce vibration absorption and energy dissipation in a fixed direction

However, under the action of 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 to absorb vibrations in all directions on the plane.

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