Viscous shear type damper

Abstract

The invention provides a viscous shear type damper comprising a sealed housing, an axial moving part, a rotating moving part and a shearing part. The sealed housing is filled with a shear medium; theaxial moving part axially sealingly passes through the housing; the rotating moving part is arranged in the housing; the axial moving part and the rotating moving part form matching, so that the axialmovement of the axial moving part cam drive the rotating moving part to rotate; and the shearing part is fixedly mounted on the outer periphery of the rotating moving part. The viscous shear type damper has an improved damping force to self weight ratio, and is particularly suitable for the field of bridge vibration resistance.

Description

technical field

[0001] The invention relates to a viscous shear damper, in particular to a viscous shear damper used in the anti-vibration field of bridges. Background technique

[0002] The viscous shear damper is a damper that uses viscous fluid material and the relative shear motion of the shear plate to generate viscous damping force for the purpose of energy dissipation and vibration reduction. The damping force of the viscous shear damper comes from the resistance of the viscous fluid, which is the viscosity of the viscous fluid. When the damping plate in the viscous fluid moves, it will drive the viscous fluid around it to do shearing motion, and its action will decelerate the faster moving layer of viscous fluid, while the slower moving layer of viscous fluid will accelerate. Therefore, shear stress is generated between the layers of viscous fluid that slide relative to each other. As a result, the kinetic energy of moving objects in the viscous fluid is converted ...

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