Semi-active variable-rigidity variable-damping mixed damper

A technology of hybrid damping and magneto-rheological damper, which is applied to building components and anti-seismic, can solve problems such as inability to adjust its own dynamic characteristics, influence of control effects, and extensive limitations of application, and achieve good fail-safe performance and clear concepts , the effect of reducing the response peak

Inactive Publication Date: 2016-03-23
TONGJI UNIV
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This passive control technology has obvious shortcomings: it cannot adjust its own dynamic characteristics in time according to the characteristics of external di

Method used

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  • Semi-active variable-rigidity variable-damping mixed damper
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  • Semi-active variable-rigidity variable-damping mixed damper

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Embodiment 1

[0025] Embodiment 1: as figure 1 As shown, it is an embodiment of a semi-active variable stiffness variable damping hybrid damper of the present invention, which mainly includes a U-shaped liquid cylinder 1, a piston 2, a spring 3, a liquid in the cylinder 4, a vertical sliding rod 5, and a horizontal sliding rod 6. Coaxial gear set 7, magnetorheological damper 8, steel support 9, backing plate 10 and bolt holes 11.

[0026] A proper amount of liquid 4 is put into the U-shaped liquid cylinder 1, and the piston 2 is placed above the liquid column at both ends. The piston 2 at both ends is composed of an upper piston and a lower piston, and a spring 3 with fixed stiffness is clamped in the middle, which can be bonded with a chemical adhesive. The end of the spring 3 is tightly bonded to the surface of the piston 2; the upper piston 2 is bonded to the vertical sliding rod 5 with tooth marks through a chemical adhesive, and the horizontal sliding rod 6 with tooth marks doubles as...

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Abstract

The invention relates to a semi-active variable-rigidity variable-damping mixed damper. The semi-active variable-rigidity variable-damping mixed damper mainly comprises U-shaped hydraulic cylinders, a transmission device, a magneto-rheological damper and the like. A proper amount of liquid is injected into the U-shaped hydraulic cylinders, pistons are placed on the U-shaped hydraulic cylinders and composed of upper piston bodies and lower piston bodies, springs are clamped between the upper piston bodies and the lower piston bodies, and the pistons are connected with the magneto-rheological damper through the transmission device. The magneto-rheological damper can generate damping force of different magnitudes by changing the magnitude of applied current, and therefore a horizontal sliding rod is controlled to move. When the magneto-rheological damper does not generate the damping force, the pistons at the two ends in the U-shaped hydraulic cylinders can freely move, and earthquake energy is consumed completely through free vibration of the liquid in the cylinders. When the magneto-rheological damper generated the damping force, due to the incompressibility of the liquid, the springs begin to be compressed, and rigidity is provided for a controlled system accordingly, In addition, the earthquake energy is dissipated through the damping force generated by the magneto-rheological damper in a friction energy consumption mode, and therefore the dual effects of adjusting the rigidity and damping of the controlled system in a semi-active mode are achieved.

Description

technical field [0001] The invention relates to a semi-active variable stiffness and variable damping hybrid damper, which improves the traditional passive control tuning liquid column damper (TLCD) and incorporates the concept of semi-active control, and realizes variable stiffness and variable damping at the same time, which is more flexible The vibration characteristics of the controlled structure is a hybrid control damper, which belongs to the technical field of anti-seismic and energy-dissipating shock-absorbing technology of civil structures (including high-rise buildings, high-rise structures, bridge structures, etc.). Background technique [0002] In recent years, the structural vibration control theory of seismic isolation, energy dissipation vibration reduction, vibration absorption and vibration reduction and other various structural control technologies has shown people a new way to reduce seismic response, among which semi-active control technology has received ...

Claims

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Application Information

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IPC IPC(8): E04B1/98
CPCE04B1/98
Inventor 鲁正王自欣黄彪
Owner TONGJI UNIV
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