Damper with equivalent rotating inertia mass

Abstract

The invention provides a damper with an equivalent rotating inertia mass. The damper comprises a translation / rotating conversion device, a rotating mass, an energy consumption element, a sleeve and a base, wherein the translation / rotating conversion device comprises a ball screw / nut, a transmission shaft and a thrust bearing. When the energy consumption element is filled with silicone oil, the damper is a passive-controlled damper; when the energy consumption element is filled with MR liquid, the damper is a semi-actively-controlled damper. The relative translation of two ends of the damper can be converted into high-speed rotation of a transmission shaft and the rotating mass on the transmission shaft through the translation / rotating conversion device; a piston connected to the transmission shaft can perform translation in the energy consumption element so as to generate viscous damping force. When the passively-controlled damper is adopted, the optimal rotating mass of the damper and the equivalent viscous coefficients of energy consumption components can be preset; when the semi-actively-controlled damper is adopted, the rotating mass of the damper can be preset, and the equivalent viscous coefficients of the MR liquid can be adjusted according to the conditions. The damper with the equivalent rotating inertia mass can be applied to vibration control of a building structure, a bridge structure, a bridge cable, a car and a machine.

Description

technical field [0001] The invention relates to a rotating equivalent inertial mass damper, which belongs to the technical field of energy dissipation and vibration reduction of engineering structures. Background technique [0002] When the structural system is excited by external dynamic loads, the traditional structural system consumes input energy through nonlinear deformation and damage; the structural system with energy dissipation and vibration reduction devices such as dampers can consume part of the input energy through the damper. The energy dissipation capacity of the damper is positively related to the relative displacement or velocity of its two ends. However, the traditional damper, because it has a certain positive stiffness, will prevent the relative displacement and relative velocity at both ends of the damper to a certain extent. At the same time, some studies have pointed out that the advantage of the semi-active control damper comes from the fact that its...

AI Technical Summary

Problems solved by technology

However, the traditional damper, because it has a certain positive stiffness, will prevent the relative displacement and relative velocity at both ends of the damper to a certain extent.

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