A single rod damper

Abstract

The invention discloses a single-piston-rod damper and belongs to the technical field of structural vibration control devices. The single-piston-rod damper comprises a cylinder which is divided into a working chamber and a compensation chamber, the working chamber and the compensation chamber are separated from each other through a floating piston which is sealed together with the cylinder, and the working chamber is filled with shear thickening fluid (STF); one end, with the tip being connected with a working piston, of the piston rod is arranged in the working chamber in the cylinder, and the other end of the piston rod is arranged outside the cylinder and connected with an upper connecting part; and an elastic part is arranged in the compensation chamber, one end of the elastic part is connected with the floating piston, and the other end of the elastic part is connected to a rubber piston arranged at the end of the cylinder. When the shearing rate is high and the instantaneous vibration velocity in the working chamber is high, shear thickening of the STF occurs to generate damping force, so that the anti-impact vibration-reduction effect of engineering structures is achieved; and when the shearing rate is low and the instantaneous vibration velocity in the working chamber is low, the elastic part in the compensation chamber elastically compensates for the initial rigidity of the damper, so that vibration reduction and energy dissipation of the engineering structures are achieved. The single-piston-rod damper is provided with the elastic compensation chamber to provide appropriate compensation rigidity, and the anti-impact vibration-reduction effect of the damper is achieved.

Description

Technical field [0001] The invention belongs to the technical field of structural vibration control devices, and particularly relates to a single rod damper. Background technique [0002] In engineering practice, such as civil engineering, aerospace engineering, vehicle engineering, etc., anti-shock and vibration reduction control devices play an important role. Especially in the field of engineering structures, there are a variety of dynamic loads in the natural environment, such as earthquakes, explosions, ice floes or ship collisions, collisions, strong winds, and ice loads. According to the speed of the load change, these dynamic loads can be divided into periodic loads, random loads and impact loads. In the actual environment of the engineering structure, these dynamic loads and their combination often cause substantial vibration or even damage to it. Therefore, the problem of anti-shock and vibration reduction control of engineering structures under complex load environme...

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Problems solved by technology

[0006] Aiming at the problem that the energy consumption of the existing single STF damper at low shear rates is not ideal, in order to obtain a suitable compensation force under the impact load and better exert its damping effect, the present invention provides a single rod damper

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