Designing method of magneto-rheological absorber damping channel width based on characteristic requirements

A magneto-rheological shock absorber and damping channel technology, applied in vibration suppression adjustment, non-rotational vibration suppression, etc., can solve the problems of not giving accuracy and reliability

Inactive Publication Date: 2015-02-11
SHANDONG UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, according to the information obtained, the current domestic and foreign regulations on the width of the damping channel of the magneto-rheological shock absorber h This key parameter has not been given an accurate and reliable design method, and most of them select a damping channel width within a range (1.0~2.0mm) based on experience. h The parameter value of the magneto-rheological shock absorber is finally determined through repeated tests, verification and modification methods. h The actual design value of

Method used

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  • Designing method of magneto-rheological absorber damping channel width based on characteristic requirements
  • Designing method of magneto-rheological absorber damping channel width based on characteristic requirements
  • Designing method of magneto-rheological absorber damping channel width based on characteristic requirements

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0030] Embodiment one : Schematic diagram of the piston cylinder, piston and damping channel of an automobile magneto-rheological shock absorber, such as figure 2 As shown, the shock absorber piston cylinder 1, piston 2, electromagnetic coil 3, and piston rod 4, wherein the electromagnetic coil 3 is embedded in the middle of the piston, and the annular gap between the piston 2 and the inner wall of the piston cylinder 1 h , which is the width of the damping channel of the MR damper h . The inner diameter of the piston cylinder of the magneto-rheological shock absorber is D H =28mm, piston rod diameter d g =18mm, piston length L =40mm; the initial viscosity of the magnetorheological fluid is 0.8Pa.s when no external magnetic field is applied, and the magnetorheological damper does not apply control current I In the case, design the required damping force characteristic curve, such as image 3 As shown, the damping channel width of the magneto-rheological shock absorbe...

Embodiment 2

[0046] Embodiment two : The structural parameters of a certain automobile magneto-rheological shock absorber are the same as those in Embodiment 1, that is, the inner diameter of the piston cylinder is D H =28mm, piston rod diameter d g =18mm, piston length L =40mm. The initial viscosity of the magnetorheological fluid and the damping characteristic design requirements of the shock absorber are different from those in Embodiment 1, wherein the initial viscosity of the magnetorheological fluid is 0.7 Pa.s, and the magnetorheological shock absorber does not apply control current I In the case, design the required damping force characteristic curve, such as Figure 5 As shown, the width of the damping channel of the magneto-rheological shock absorber h design.

[0047] Using the design steps of Embodiment 1, the width of the damping channel of the magneto-rheological shock absorber h To design:

[0048] (1) Determine the working speed of the magnetorheological shock ab...

Embodiment 3

[0061] Embodiment three : The inner diameter of the piston cylinder of an automobile magneto-rheological shock absorber is D H =28mm, piston rod diameter d g =18mm, piston length L =50mm, the initial viscosity of the magnetorheological fluid is 0.9Pa.s, and the magnetorheological damper does not apply control current I In the case, design the required damping force characteristic curve, such as Figure 7 As shown, the width of the damping channel of the magneto-rheological shock absorber h design.

[0062] Using the design steps of Embodiment 1, the width of the damping channel of the magneto-rheological shock absorber h To design:

[0063] (1) Determine the working speed of the magnetorheological shock absorber V 1 and corresponding to the required damping force F 1 :

[0064] According to the magnetorheological damper when no control current is applied I In the case, design the required damping force characteristic curve, such as Figure 7 As shown, ...

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Abstract

The invention relates to a designing method of magneto-rheological absorber damping channel width based on characteristic requirements and belongs to the technical field of absorbers. At present, a reliable designing method of the magneto-rheological absorber annular damping channel width is not available neither in China nor abroad, and the width is obtained by choosing a design value from a design range by experience in most cases, and therefore a reliable design parameter is hard to obtain and smooth operation of a vehicle can not be guaranteed in a power off situation. The designing method of the magneto-rheological absorber damping channel width based on the characteristic requirements is characterized in that the damping channel width h is designed optimally according to the magneto-rheological absorber damping characteristic requirements, the inner diameter DH of a piston cylinder, the diameter dg of a piston rod, length L of a piston and magneto-rheological liquid initial viscosity mu 0. The damping channel width h designed with the method is reliable, magneto-rheological absorber damping characteristics are enabled to be optimized, the smooth operation of the vehicle is ensured in the power off situation, the rate of product development is improved, test cost is reduced, product designing level is improved, and product quality and product properties are improved.

Description

technical field [0001] The invention relates to a magneto-rheological shock absorber, in particular to a design method for the damping channel width of the magneto-rheological shock absorber based on characteristic requirements. Background technique [0002] The magneto-rheological shock absorber can control the damping force of the shock absorber by controlling the magnitude of the current. It has the characteristics of fast response, low power consumption, large adjustment range, etc., and the working conditions are relatively simple. At present, domestic and foreign automobile suspension A hotspot in the field of frame research. Annular damping channel width of magnetorheological shock absorber h It is an important structural parameter of the magnetorheological shock absorber, which determines the flow damping characteristics of the shock absorber and has an important impact on the ride comfort of the vehicle. Magnetorheological damper damping channel width h The para...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F16F9/53
Inventor 周长城李红艳肖红
Owner SHANDONG UNIV OF TECH
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