Computing method of deformation of annular sandwich valve plates of vibration absorber under non-uniform pressure

A non-uniform pressure, superimposed valve technology, applied in computing, instruments, special data processing applications, etc., can solve the problem of not giving accurate, can not meet the accurate design and characteristic simulation of shock absorber valve and so on

Inactive Publication Date: 2013-08-14
SHANDONG UNIV OF TECH
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Due to the existence of the normally open orifice and the throttling gap of the shock absorber, the actual pressure on the shock absorber valve plate is not uniform but actually non-uniform. Although many scholars at home and abroad have done a lot of research on this However, no accurate analytical calculation formula and calculation method have been given so far for the calculation of valve plate deformation under non-uniform load.
At present, finite element simulation software is mostly used at home and abroad to conduct numerical simulation of the valve plate under a given pressure by establishing a solid model. Although an approximate numerical solution can be obtained, it cannot meet the requirements of accurate design of shock absorber valve parameters and characteristic simulation.
my country has made an important breakthrough in the research on the deformation calculation of the annular superimposed valve plate of the shock absorber, but it can only accurately calculate the deformation of the annular superimposed valve plate under uniform pressure, but because the pressure on the annular superimposed valve plate of the shock absorber is Non-uniform distribution, in order to establish an accurate shock absorber design and characteristic simulation mathematical model, it is necessary to solve the problem of accurate analytical calculation of the deformation of the annular superimposed valve plate of the shock absorber under non-uniform pressure

Method used

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  • Computing method of deformation of annular sandwich valve plates of vibration absorber under non-uniform pressure
  • Computing method of deformation of annular sandwich valve plates of vibration absorber under non-uniform pressure
  • Computing method of deformation of annular sandwich valve plates of vibration absorber under non-uniform pressure

Examples

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Embodiment 1

[0077] 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 r k =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; non-uniform maximum pressure p 0 =3.0MPa.

[0078] The calculation method of the deformation of the annular superimposed valve plate of the shock absorber provided by the example of the present invention, its calculation process is as follows figure 1 As shown, the mechanical model of the annular superimposed valve plate of the shock absorber is as follows figure 2 As shown, the specific steps are as follows:

[0079] (1) Determine the equivalent thickness of the annular superimposed valve plate h e :

[0080] According to the thickness and the number of circular...

Embodiment 2

[0106] Embodiment two: Inner circle radius, outer circle radius, thickness, number of plates, material characteristic parameters and non-uniform maximum pressure of a certain shock absorber annular stacked valve plate p 0 The first embodiment is exactly the same, only the radius of the valve port position r k =7.0mm.

[0107] The calculation steps of Embodiment 1 are adopted, namely:

[0108] (1) Determine the equivalent thickness of the isomorphic annular superimposed valve plate h e :

[0109] Since the thickness and the number of stacked valve plates are the same as in Embodiment 1, the calculation is therefore the equivalent thickness of the annular stacked valve plate of the shock absorber h e =0.260855mm;

[0110] (2) Under uniform pressure, the annular superimposed valve plate is at any radius r Position deformation coefficient G r1 calculate:

[0111] The inner radius, outer radius and material characteristic parameters of the annular superimposed valve p...

Embodiment 3

[0128] 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 r a =5.0mm, outer circle radius r b =8.75mm, valve port radius r k =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; non-uniform maximum pressure p 0 =3.0MPa.

[0129] The calculation steps of Embodiment 1 are adopted, namely:

[0130] (1) Determine the equivalent thickness of the isomorphic annular superimposed valve plate h e :

[0131] According to the thickness and number of stacked valve slices, h 1 =0.15mm, n 1 =1; h 2 =0.2mm, n 2 =3, to determine the equivalent thickness of the annular stacked valve plate of the shock absorber h e =0.3013mm;

[0132] (2) Under uniform pressure, the annular superimposed valve plate is at any radius r Position deformation coefficient G ...

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Abstract

The invention relates to a computing method of deformation of annular sandwich valve plates of a vibration absorber under non-uniform pressure, and belongs to the technical field of vibration absorbers. The method is characterized by comprising the steps that equivalent thicknesses of the annular sandwich valve plates, and deformation coefficients of the annular sandwich valve plates in any radius position under the non-uniform pressure are computed, and the deformation of the annular sandwich valve plates of the vibration absorber in any radius position under the non-uniform pressure is computed according to the equivalent thicknesses, the deformation coefficients and the maximum non-uniform pressure. A computation instance and an ANSYS simulation verification result prove that the method can accurately compute the deformation of the annular sandwich valve plates of the vibration absorber in any radius position under the non-uniform pressure; an accurate vibration absorber parameter design and characteristic simulation model can be established, and an accurate and reliable vibration absorber throttling valve parameter design value and a vibration absorber characteristic simulation value can be obtained by using the method, so that the design and testing cost of the vibration absorber can be lowered; and a design level, the quality, the performances and the vehicle riding comfort can be raised and improved.

Description

technical field [0001] The invention relates to a shock absorber, in particular to a calculation method for deformation of an annular superimposed valve plate of the shock absorber under non-uniform pressure. Background technique [0002] The annular superimposed valve plate of the recovery valve and the compression valve is the most critical precision component in the shock absorber. The deformation of the valve plate at the radial position of the valve port has an important impact on the damping characteristics of the shock absorber. Therefore, whether the annular superimposed valve can be realized The accurate calculation of sheet deformation determines whether the accurate shock absorber valve parameter design and shock absorber characteristic simulation mathematical model can be established, and the accurate shock absorber throttle valve parameter design value and characteristic simulation value can be obtained, and whether it can be determined Realize the modern CAD de...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06F17/50
Inventor 周长城赵雷雷孔艳玲
Owner SHANDONG UNIV OF TECH
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