Series acceleration inert energy dissipation device

Abstract

A series acceleration inert energy dissipation device comprises a rotating unit, an eddy current unit and an additional mass unit. Operation of the rotating unit promotes synchronous operation of the eddy current unit. The rotating unit comprises a left outer cylinder, the outer cylinder comprises a left ball screw, an external thread of the left ball screw is connected with an internal thread in the left outer cylinder, and axial movement is achieved. The two-node mass unit absorbs energy, the eddy current unit dissipates the energy, the series acceleration inert energy dissipation device has better frequency domain applicability, can be serially connected with an elastic unit, has a certain tuning function and is free from sealing requirements, high in energy dissipation efficiency and excellent in energy dissipation performance, structural safety can be more effectively protected, and vibration energy of an earthquake, wind vibration, human-induced excitation and the like can be dissipated. The left outer cylinder and a right outer cylinder are serially connected and contact with each other through a rotary friction surface, and additional two-node mass efficiency increase is obvious. Compared with a traditional eddy current damper, the series acceleration inert energy dissipation device is higher in efficiency by the aid of the friction surface and eddy current energy dissipation.

Description

technical field [0001] The invention relates to a parallel acceleration inertia energy dissipator, which belongs to the technical field of energy dissipation and shock absorption of civil engineering structures. Background technique [0002] The energy dissipation and vibration reduction technology is to add an energy dissipation and vibration reduction device to the structure, and the additional vibration reduction device and the structure itself jointly bear the effects of earthquake and wind vibration. Scholars at home and abroad have done a lot of research on energy dissipation and vibration reduction technology. As an effective means of reducing building and infrastructure disasters, energy dissipation devices are usually divided into velocity type energy dissipation devices and displacement type energy dissipation devices. The speed type damper has good energy dissipation effect, but it often has high requirements on the energy dissipation device itself, strict sealin...

AI Technical Summary

Problems solved by technology

Electromagnetic damping force means that when the conductor cuts the magnetic field lines in the magnetic field, an induced current will be generated in the conductor, and the ampere force received by the induced current always hinders the movement of the conductor, thereby providing electromagnetic damping, but generally the energy consumption efficiency is low

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