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Calculation method for vibration absorber isodesmic annular superposed valve plate deformation

A calculation method and superimposed valve technology, applied in the field of hydraulic shock absorbers, can solve problems such as difficulty in meeting shock absorber design and production and characteristic simulation, lack of analytical calculation formulas or calculation methods, etc.

Inactive Publication Date: 2013-05-15
SHANDONG UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, for the calculation of the deformation of the isomorphic annular superimposed valve plate, there is no simple and accurate calculation method at home and abroad. However, due to the lack of simple, accurate and reliable analytical calculation formulas or calculation methods, it is difficult to meet the requirements of actual design and production of shock absorbers and characteristic simulation

Method used

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  • Calculation method for vibration absorber isodesmic annular superposed valve plate deformation
  • Calculation method for vibration absorber isodesmic annular superposed valve plate deformation
  • Calculation method for vibration absorber isodesmic annular superposed valve plate deformation

Examples

Experimental program
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Embodiment 1

[0040] Embodiment one: The radius of the inner circle of a shock absorber with an isostructured annular superimposed valve plate r a =5.0mm, outer circle radius r b =8.5mm, valve port radius =8.0mm modulus of elasticity E =200GPa, Poisson's ratio mu =0.3, the thickness and number of superimposed valve plates are respectively h 1 =0.1mm, n 1 =3; h 2 =0.15mm, n 2 =2; h 3 =0.2mm, n 3 =1.

[0041] (1) Determine the equivalent thickness of the isomorphic annular superimposed valve plate h e :

[0042] According to the thickness and the number of circular superimposed valve plates of a certain shock absorber h 1 =0.1mm, n 1 =3; h 2 =0.15mm, n 2 =2; h 3 =0.2mm, n 3 =1, to determine the equivalent thickness of the isomorphic annular superimposed valve plate h e for:

[0043] =0.260855mm;

[0044] (2) Calculation of isomorphic annular superimposed valve plate at any radius r Deformation coefficient:

[0045] According to the radius of the inn...

Embodiment 2

[0066] Embodiment two: The structural parameters and material characteristic parameters of a shock absorber isomorphic annular superimposed valve plate are exactly the same as those in Example 1, and the thickness and number of superimposed valve plates are respectively h 1 =0.1mm, n 1 =1; h 2 =0.15mm, n 2 =1; h 3 =0.2mm, n 3 =1, pressure p =3.0MPa.

[0067] According to the thickness and number of stacked valve plates h 1 =0.1mm, n 1 =1;h 2 =0.15mm, n 2 =1; h 3 =0.2mm, n 3 =1, to determine the equivalent thickness of the shock absorber isomorphic annular superimposed valve plate h e for:

[0068] = 0.231303mm;

[0069] Since the structural parameters and material characteristic parameters of the isostructured annular superimposed valve plate of the shock absorber are exactly the same as those in Embodiment 1, the superimposed valve plate can be used at any radius r , Orifice radius r k and outer circle radius r b The deformation coefficients...

Embodiment 3

[0079] Embodiment three: The material characteristic parameters of a shock absorber isostructured annular superimposed valve plate are the same as those in Example 1, and the radius of the inner circle is =5.0mm, outer circle radius =8.75mm, valve port radius =8.0mm, the thickness and number of superimposed valve plates are respectively h 1 =0.15mm, n 1 =1; h 2 =0.2mm, n 2 =3, uniform pressure p =3.0MPa.

[0080] Using the calculation steps of Embodiment 1, according to the inner circle radius of the superimposed valve plate =5.0mm, outer circle radius =8.75mm, elastic modulus E =2.0 and Poisson's ratio mu =0.3, to determine the various constants formed by superimposing the deformation coefficient of the valve plate under uniform pressure:

[0081] , ,

[0082] ,

[0083] = ;

[0084] In the formula, , , , , , , , ;

[0085] According to the above E 1 , E 2 , E 3 and E 4 , calculate the superimposed valve plate at a...

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Abstract

The invention relates to a calculation method for vibration absorber isodesmic annular superposed valve plate deformation and belongs to the technical field of vibration absorbers. At present, no reliable calculation method is provided for the vibration absorber isodesmic annular superposed valve plate deformation; and most methods are used for entity modeling and simulation by using ANSYS and cannot meet requirements on vibration absorber design and characteristic simulation and superposed valve plate design. The calculation method is characterized in that deformation of annular superposed valve plates, which has the same material characteristics and of which the radiuses of an inner circle and an outer circle are equal, at positions with any radius r and any valve port radius rk is precisely calculated. According to an ANSYS simulation result, the calculation method is precise; and the calculation method for the vibration absorber isodesmic annular superposed valve plate deformation is supplied to vibration absorber characteristic simulation and splitting design of a superposed valve plate.

Description

technical field [0001] The invention relates to a hydraulic shock absorber, in particular to a calculation method for the deformation of an annular superimposed valve plate of the shock absorber. Background technique [0002] In order to reduce the manufacturing cost and meet the different characteristics of the shock absorber, the stress strength of the valve plate and the production process requirements, the actual shock absorber throttle valve plate mostly adopts multiple pieces with the same material characteristics, and the inner and outer circle radii are equal. The stacked valve slices, that is, the isomorphic annular stacked valve slices, can be equal or unequal in thickness, but most of them use standard thickness series, that is, h 1 , h 2 ,..., h n . The deformation of the annular superimposed valve plate of the shock absorber, especially the deformation at the valve port, directly affects the damping characteristics of the shock absorber. However, for the ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06F17/50
Inventor 周长城孔艳玲刘小亭
Owner SHANDONG UNIV OF TECH
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