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Method for calculating deformation of valve plate of shock absorber under arbitrary axisymmetric and non-uniform pressure

A non-uniform pressure distribution and axisymmetric technology, applied in the field of hydraulic shock absorbers, can solve difficult problems such as shock absorber throttle valve parameter design and characteristic simulation model

Inactive Publication Date: 2014-03-12
SHANDONG UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] The pressure on the annular throttle valve plate of the shock absorber is actually non-uniform, and may even be irregularly distributed. However, for the deformation calculation of the shock absorber valve plate under any axisymmetric non-uniform pressure, the domestic, Accurate and reliable analytical calculation methods have not been given in foreign countries. Most of them calculate the deformation of the shock absorber valve plate according to the uniform pressure. Because there is a certain difference between the calculated deformation of the valve plate and the actual one, it is difficult to establish Accurate shock absorber throttle valve parameter design and characteristic simulation model

Method used

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  • Method for calculating deformation of valve plate of shock absorber under arbitrary axisymmetric and non-uniform pressure
  • Method for calculating deformation of valve plate of shock absorber under arbitrary axisymmetric and non-uniform pressure
  • Method for calculating deformation of valve plate of shock absorber under arbitrary axisymmetric and non-uniform pressure

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0069] Example 1: The radius of the inner circle of a ring valve plate of a shock absorber =5.0mm, outer circle radius =8.5mm, elastic modulus E =2.0 and Poisson's ratio mu =0.3, thickness h =0.3mm, apply uniform pressure on the radius [5.0,8.0]mm section and [8.0,8.5]mm section respectively p 0 =3.0MPa and linear non-uniform pressure p ( r )= MPa, calculate the deformation of the shock absorber valve plate under this pressure.

[0070] The calculation method for the deformation of the shock absorber valve plate under any axisymmetric non-uniform pressure provided by the example of the present invention, its calculation process is as follows figure 2 As shown, the specific calculation steps are as follows:

[0071] (1) Determined at the radius r j The microannular pressure proportional coefficient at k pj :

[0072] According to non-uniform pressure p ( r )= MPa and its maximum value is p 0 =3.0MPa, the radius of the inner circle of the shock...

Embodiment 2

[0115] Embodiment 2: The thickness of a shock absorber valve plate h =0.3mm, inner circle radius =5.0mm, outer circle radius =8.5mm, elastic modulus E =2.0 and Poisson's ratio mu =0.3, in [ , ] within the range of the secondary non-uniform pressure MPa, calculate the deformation of the shock absorber valve plate under this pressure.

[0116] The calculation steps of Embodiment 1 are adopted, namely:

[0117] (1) Determined at the radius r j The microannular pressure proportional coefficient at k pj :

[0118] According to non-uniform pressure MPa and its maximum value is p 0 =3.0MPa, the radius of the inner circle of the shock absorber valve plate =5.0mm, outer circle radius =8.5mm, the radius interval [ ] are equally divided into 70 parts, the micro-ring spacing =0.05mm, ( j =1, 2, 3, ..., 70), radius r j The radius of the inner circle of the microring = r j , outer circle radius , ( j =1,2,…,70), determined in the radius r ...

Embodiment 3

[0131] Embodiment 3: The structural parameters and material characteristic parameters of a damper valve plate are the same as those in Embodiment 1, that is, the thickness h =0.3mm, inner circle radius =5.0mm, outer circle radius =8.5mm, elastic modulus E =2.0 and Poisson's ratio mu =0.3, in [ , ] within the range of applied sinusoidal non-uniform pressure MPa, calculate the deformation of the shock absorber valve plate under this pressure.

[0132] Using the calculation steps of Embodiment 1, namely

[0133] (1) Determined at the radius rj The microannular pressure proportional coefficient at :

[0134] According to non-uniform pressure MPa and its maximum value is p 0 =3.5MPa, the radius of the inner circle of the shock absorber valve plate =5.0mm, outer circle radius =8.5mm, the radius interval [ ] are equally divided into 70 parts, the micro-ring spacing =0.05mm, ( j =1, 2, 3, ..., 70), radius r j The radius of the inner circle of ...

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Abstract

The invention relates to a method for calculating the deformation of a valve plate of a shock absorber under an arbitrary axisymmetric and non-uniform pressure, belongs to the technical field of the shock absorber and solves the problem that a reliable analytic calculation method for the deformation of the valve plate under the arbitrary axisymmetric pressure is not disclosed in China and abroad. The method is characterized by comprising the steps of supposing that the arbitrary non-uniform pressure is superposed by a plurality of micro-ring pressures, carrying out multiplying and superposition on a deformation coefficient of the valve plate at an arbitrary radius r and proportionality coefficients of the micro-ring pressures so as to obtain a 'pressure-deformation influence' coefficient Grp, thereby realizing the analytic calculation to the deformation of the valve plate, at the arbitrary radius, of the shock absorber under the arbitrary axisymmetric and non-uniform pressure. Compared with an ANSYS simulation verification result, the calculation method is accurate; by utilizing the calculation method, the deformation of the valve plate of the shock absorber under the arbitrary axisymmetric and non-uniform pressure can be calculated, precise parameter design and character simulation models of a throttle valve of the shock absorber can be established, and the design level, quality and performance of the shock absorber can be improved.

Description

technical field [0001] The invention relates to a hydraulic shock absorber, in particular to a calculation method for the deformation of a shock absorber valve plate under arbitrary axisymmetric non-uniform pressure. Background technique [0002] The pressure on the annular throttle valve plate of the shock absorber is actually non-uniform, and may even be irregularly distributed. However, for the deformation calculation of the shock absorber valve plate under any axisymmetric non-uniform pressure, the domestic, Accurate and reliable analytical calculation methods have not been given in foreign countries. Most of them calculate the deformation of the shock absorber valve plate according to the uniform pressure. Because there is a certain difference between the calculated deformation of the valve plate and the actual one, it is difficult to establish Accurate shock absorber throttle valve parameter design and characteristic simulation model. With the rapid development of the...

Claims

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Application Information

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