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A giant magneto-squeezing magneto-rheological damper self-adaption method and damper

A magnetorheological damper, extrusion technology, applied in the direction of shock absorber, shock absorber, spring/shock absorber, etc., to achieve the effect of reasonable structure space utilization, low cost and low heat generation

Inactive Publication Date: 2019-08-02
NORTHEASTERN UNIV LIAONING
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] Aiming at the deficiencies existing in the current giant magneto-rheological damper, the present invention proposes a giant magneto-squeeze magneto-rheological damper self-adaptive method and damper

Method used

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  • A giant magneto-squeezing magneto-rheological damper self-adaption method and damper
  • A giant magneto-squeezing magneto-rheological damper self-adaption method and damper
  • A giant magneto-squeezing magneto-rheological damper self-adaption method and damper

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Embodiment Construction

[0021] The present invention will be further described below in conjunction with the accompanying drawings. like figure 1 As shown, the present invention includes a cylinder 1, an upper end cover 2, a permanent magnet 3, a piston rod 4, a giant magnetostrictive rod 5, a sealing ring 6, an elastic element 7, an extrusion disc 8, a magnetorheological fluid 9, and a lower end cover 10 and connecting bolts 11; the cylinder body is filled with magnetorheological fluid 5, and one end of the piston rod 4 extends out of the cylinder body. A permanent magnet 3 is arranged in the extrusion disc 8 , a giant magnetostrictive rod 5 is located in the hollow piston rod 4 , and an elastic element 7 connects the giant magnetostrictive rod 5 with the lower end cover 10 .

[0022] Working principle of the present invention:

[0023] like figure 2 As shown, the magneto-rheological damper is equipped with a ring-shaped permanent magnet inside the extrusion disk, which respectively generates tw...

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Abstract

The invention discloses a self-adaptive method for a giant-magnetostrictive extrusion-type magnetorheological damper and a damper. A magnetic field generated by a permanent magnet is divided into twoparallel magnetic flux circuits, a giant-magnetostrictive telescopic rod is connected to one magnetic flux circuit in series, magnetic field changes of the other magnetic flux circuit is influenced through magnetic permeability coefficient changes caused by external force influences of the giant-magnetostrictive telescopic rod, changes of magnetorheological fluid viscous force is finally brought,and then self-adaptive adjustment of damper output force is achieved. The self-adaptive method has the advantages that firstly, the magnetic circuit utilization rate and the output force are high; secondly, design and optimization are convenient; and thirdly, the self-adaptive method is simple and reliable.

Description

technical field [0001] The invention relates to a vibration control technology of an engineering structure, in particular to a magneto-rheological damper. Background technique [0002] The magneto-rheological damper is a semi-active control damper that uses the smart material magneto-rheological body as the working medium. By controlling the input current or voltage, the strength of the electromagnetic field loaded on the magneto-rheological body changes. Furthermore, the rheological properties of the magnetorheological fluid can be changed within tens of milliseconds, thereby providing controllable damping and stiffness. Magneto-rheological dampers have the characteristics of millisecond-level response speed, large control range and large damping force output, and have become excellent semi-active actuators in industrial applications. At present, magnetorheological dampers have been widely used in vibration reduction and anti-seismic systems of buildings and bridges, and v...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F16F9/53F16F9/50F16F9/48F16F9/36
CPCF16F9/36F16F9/369F16F9/48F16F9/50F16F9/53
Inventor 史啸天李鹤张逸凡
Owner NORTHEASTERN UNIV LIAONING
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