Shearing type STF damper

Abstract

The invention provides a shearing type STF damper. The shearing type STF damper comprises an upper connecting plate, steel teeth, a steel sleeve, an upper cover, a baffle and a steel spacer. The steel sleeve is provided with a plurality of steel spacers, and a blocking door is welded to the steel sleeve and fixedly connected with the steel spacers. The steel teeth are provided with a plurality of tooth pieces and inserted into gaps of the steel spacers, baffles used for limiting the steel teeth are arranged on the upper portions of the steel spacers, and the baffles are fixedly connected with the steel sleeve. The upper cover is fixedly connected with the top end of the steel sleeve; the waist of the upper cover is provided with an open slot for the steel teeth to pass through; the steel teeth are in dry friction sliding fit connection with open slots, and the tops of the steel teeth are fixedly connected with the upper connecting plate. According to the shearing type STF damper, due to the fact that the flowing space of STF damping fluid is extremely small compared with the space occupied by the steel teeth, a large sliding speed can be generated, and STF can conveniently exert the shear thickening effect. Along with the increase of the shearing rate, the STF viscosity is rapidly increased, so that the impact resistance and vibration isolation of an engineering structure are realized. The damper has the advantages of being novel in structure and clear in construction, and is a safe and efficient damper.

Description

technical field [0001] The invention belongs to the technical field of structure damping, and in particular relates to a shear thickening fluid shear damper. Background technique [0002] With the continuous development and progress of modern science and technology, the vibration isolation and vibration reduction devices of building structures have also been continuously improved and updated. In recent decades, damper technology has developed rapidly in architectural structural engineering such as buildings and bridges. At present, viscous dampers are widely used in high-earthquake areas and high-rise buildings because of their simple structure, no maintenance, and long service life. [0003] Shear thickening fluid (STF) is a smart material with excellent performance, and the characteristics of STF depend on its shear strain rate. When subjected to a high strain rate load, the surface of the contact interface undergoes shear thickening behavior , its viscosity changes dram...

AI Technical Summary

Problems solved by technology

[0004] At present, the traditional viscous damper often has various shortcomings such as poor damping performance, oil leakage and design performance and actual performance due to various design and theoretical reasons.

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