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Calculation Method of Shock Absorber Valve Plate Deformation under Arbitrary Axisymmetric Non-uniform Pressure

A non-uniform pressure distribution and axisymmetric technology, which is 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: 2017-03-15
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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  • Calculation Method of Shock Absorber Valve Plate Deformation under Arbitrary Axisymmetric Non-uniform Pressure
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  • Calculation Method of Shock Absorber Valve Plate Deformation under Arbitrary Axisymmetric Non-uniform Pressure

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0052] Example 1: The radius r of the inner circle of a ring valve plate of a shock absorber a =5.0mm, outer circle radius r b =8.5mm, elastic modulus E=2.0×10 11 Pa and Poisson's ratio μ=0.3, thickness h=0.3mm, on the radius [5.0,8.0]mm segment and [8.0,8.5]mm segment, respectively apply uniform pressure p 0 =3.0MPa and linear non-uniform pressure Calculate the deformation of the shock absorber valve plate under this pressure.

[0053] 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:

[0054] (1) Determined at the radius r j The microannular pressure proportional coefficient k at pj :

[0055] According to non-uniform pressure and its maximum value is p 0 =3.0MPa, the radius r of the inner circle of the damper valve plate a =5.0mm, outer cir...

Embodiment 2

[0081] Embodiment 2: The thickness of a shock absorber valve plate is h=0.3mm, and the radius of the inner circle is r a =5.0mm, outer circle radius r b =8.5mm, elastic modulus E=2.0×10 11 Pa and Poisson's ratio μ = 0.3, in [r a ,r b ] within the range of the secondary non-uniform pressure Calculate the deformation of the shock absorber valve plate under this pressure.

[0082] The calculation steps of Embodiment 1 are adopted, namely:

[0083] (1) Determined at the radius r j The microannular pressure proportional coefficient k at pj :

[0084] According to non-uniform pressure and its maximum value is p 0 =3.0MPa, the radius r of the inner circle of the damper valve plate a =5.0mm, outer circle radius r b =8.5mm, the radius interval [r a ,r b ] are evenly divided into 70 parts, that is, 70 microrings, the width of each microring is Δr=0.05mm, and at radius r j The inner radius r of the microring at kj = r j , outer circle radius r tj = r kj +Δr=r j+1 , w...

Embodiment 3

[0097] Embodiment 3: The structural parameters and material characteristic parameters of a shock absorber valve plate are the same as those in Embodiment 1, that is, the thickness h=0.3mm, and the inner circle radius r a =5.0mm, outer circle radius r b =8.5mm, elastic modulus E=2.0×10 11 Pa and Poisson's ratio μ = 0.3, in [r a ,r b ] within the range of applied sinusoidal non-uniform pressure Calculate the deformation of the shock absorber valve plate under this pressure.

[0098] Using the calculation steps of Embodiment 1, namely

[0099] (1) Determined at the radius r j The microannular pressure proportional coefficient k at prj :

[0100] According to non-uniform pressure and its maximum value is p 0 =3.5MPa, the radius r of the inner circle of the damper valve plate a =5.0mm, outer circle radius r b =8.5mm, the radius interval [r a ,r b ] are evenly divided into 70 parts, that is, 70 microrings, the width of each microring is Δr=0.05mm, and at radius r j T...

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Abstract

The invention relates to a calculation method for deformation of a shock absorber valve plate under arbitrary axisymmetric non-uniform pressure, and belongs to the technical field of shock absorbers. Previously, no reliable analytical calculation method has been given for the deformation of the valve plate under any axisymmetric pressure at home and abroad. The invention is characterized in that any non-uniform pressure is regarded as the superposition of multiple micro-ring pressures, and the "pressure ‑Deformation influence” coefficient Grp, so as to realize the analytical calculation of the deformation of the shock absorber valve plate at any radius r position under any axisymmetric non-uniform pressure. By comparing with the ANSYS simulation verification results, it can be seen that the calculation method is accurate, and the deformation of the shock absorber valve plate under any axisymmetric non-uniform pressure can be calculated by using this calculation method, and an accurate shock absorber throttle valve can be established. Parameter design and characteristic simulation model improve the design level, quality and performance of the shock absorber.

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 Patents(China)
IPC IPC(8): G06F17/50
Inventor 周长城赵雷雷孔艳玲
Owner SHANDONG UNIV OF TECH