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A self-resetting variable stiffness composite damper

A composite damping and magneto-rheological damper technology, which is applied in the direction of building components, shockproof, building types, etc., can solve the problems of unsuitable structural vibration control, loud particle collision sound, and large noise pollution, so as to achieve low noise and low maintenance cost Low, low-disturbance effect

Active Publication Date: 2021-02-02
TONGJI UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, due to the large collision sound of particles, it will cause greater noise pollution to the surroundings when it works, so it is not suitable for structural vibration control under low-amplitude vibration.

Method used

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  • A self-resetting variable stiffness composite damper
  • A self-resetting variable stiffness composite damper
  • A self-resetting variable stiffness composite damper

Examples

Experimental program
Comparison scheme
Effect test

Embodiment

[0027] Such as figure 1 , 2 , a self-resetting variable stiffness composite damper, consisting of a magnetorheological damper 1, a rail car 2, a rubber-coated steel ball 3, a coil spring 4, an SMA cable 5, a magnetic isolation slide 6, and a locking tooth 7 , slide rail 8, the rail cars 2 are connected in series with the coil spring 4 to form a rail car group, the two ends of the rail car group are connected to the structure through the magnetorheological damper 1, and the rubber outsourcing steel ball 3 is placed In the rail car 2 track, the magnetic isolation slide 6 is placed in the rail car 2 track, and the rubber outsourcing steel ball 3 is fixed on one side of the rail car 2 track to prevent the rubber outsourcing steel ball 3 from sliding, SMA The drag cable 5 is tied between the railcar 2 and the structure, and between the railcar 2 and the railcar 2.

[0028] Such as image 3 , the magnetorheological damper 1 includes a piston outer cylinder 101, a piston inner rod...

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Abstract

The invention relates to a self-resetting variable stiffness composite damper, which includes a railcar group composed of several railcars in series and a magnetorheological damper. The railcar is installed on a shock absorbing structure On the slide rail, the two ends of the rail car group are connected to the shock absorbing structure through the magneto-rheological damper, and the adjacent rail cars are connected through energy-consuming connection components; the rail cars are equipped with There is a cavity, and a movable magnetic isolation slide is arranged in the cavity, and a rubber outsourcing steel ball is arranged between the cavity and the magnetic isolation slide, and the cavity is far away from the rubber outsourcing steel ball One end is provided with a locking mechanism for securing the magnetic isolation slide. In the face of small winds and small earthquakes, coil springs, magnetorheological dampers, and SMA cables are used to absorb vibrations and consume energy; rubber-wrapped steel balls are used to move and collide in railcars to dissipate energy.

Description

technical field [0001] The invention relates to the technical field of structural energy dissipation and shock absorption, in particular to a self-resetting composite damper with variable stiffness. Background technique [0002] In the field of civil engineering, vibration is one of the main threats to civil engineering structures. Vibrations caused by earthquakes, wind loads, and equipment work will not only cause a decrease in the comfort of people living inside the building structure, but also cause physical discomfort; severe vibrations will also lead to structural damage, resulting in serious loss of people's lives and property, resulting in serious social impact. In order to ensure the safety of engineering structures and the comfort of building use, a series of studies on structural energy dissipation and shock absorption measures have been carried out in the field of civil engineering. Including but not limited to strengthening or weakening of some structural compo...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): E04B1/98E04H9/02
CPCE04B1/98E04H9/021
Inventor 鲁正周映旻张迁迁
Owner TONGJI UNIV
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