The Calculation Method of the Maximum Radial Stress of Annular Valve Disc with Unequal Thickness in Oil and Gas Spring

A technology of radial stress and oil-gas springs, applied in the field of oil-gas springs, can solve problems such as lack of analytical calculation formulas, and achieve reliable calculation methods, accurate calculation results, and reliable calculation methods

Active Publication Date: 2017-12-29
SHANDONG UNIV OF TECH
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Problems solved by technology

With the rapid development of the automobile industry and the continuous improvement of driving speed, higher requirements are put forward for the design of oil-gas springs and unequal-thickness annular valve plates. Currently, the maximum radial stress is calculated by solid modeling using finite element simulation software. Simulation check calculation lacks accurate analytical calculation formulas, which cannot meet the requirements of the rapid development of the modern automobile industry and the modern CAD design of oil and gas springs

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  • The Calculation Method of the Maximum Radial Stress of Annular Valve Disc with Unequal Thickness in Oil and Gas Spring
  • The Calculation Method of the Maximum Radial Stress of Annular Valve Disc with Unequal Thickness in Oil and Gas Spring
  • The Calculation Method of the Maximum Radial Stress of Annular Valve Disc with Unequal Thickness in Oil and Gas Spring

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Embodiment Construction

[0026] specific implementation plan

[0027] The present invention will be further described in detail through an embodiment below.

[0028] The oil and gas spring of a special vehicle adopts annular valve discs of unequal thickness, the elastic modulus E = 200GPa, Poisson's ratio μ = 1 / 3, and the thickness of the equal thickness part is h 0 =0.3mm, variable thickness radius r t =7.3mm, effective inner circle radius r a =5.0mm, outer circle radius r b =8.5mm, the uniform pressure received is p=3.0MPa.

[0029] The calculation method of the maximum radial stress of the oil-gas spring unequal thickness annular valve plate provided by the example of the present invention, its calculation flow chart is as follows figure 1 As shown, the mechanical model of the oil-gas spring unequal-thickness annular valve plate is as follows figure 2 As shown, the specific steps are as follows:

[0030] (1) Determine the constant term X formed by the maximum radial stress coefficient of the...

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Abstract

The invention relates to a method for calculating the maximum radial stress of an oil-gas spring with unequal thickness annular valve plates, and belongs to the technical field of oil-gas suspension. Previously, there was no reliable calculation method for the maximum radial stress of the oil-gas spring unequal-thickness annular valve plate. Most of them used finite element software to simulate the maximum radial stress under a given pressure, which could not meet the requirements of the modern CAD design of the oil-gas spring. The calculation method for the maximum radial stress of the oil-gas spring unequal-thickness annular valve plate provided by the present invention can calculate the maximum radial stress of the unequal-thickness annular valve plate according to the structural parameters and material performance parameters of the oil-gas spring unequal-thickness annular valve plate Perform precise and fast calculations. Comparing with the ANSYS simulation results, it can be seen that the calculation method is accurate and reliable, and it provides a reliable maximum radial stress calculation method for the realization of the modern CAD design of oil and gas springs and the calculation of the stress intensity of annular valve plates with different thicknesses.

Description

technical field [0001] The invention relates to an oil-gas spring, in particular to a method for calculating the maximum radial stress of an oil-gas spring with unequal thickness annular valve plates. Background technique [0002] For the maximum radial stress of the oil-gas spring unequal-thickness annular valve plate, there is no accurate and reliable calculation method at home and abroad. Most of them use finite element simulation software to establish the entity Numerical simulation of the model can obtain an approximate numerical solution, but a solid model needs to be established and accurate analytical formulas and calculation methods cannot be provided. Since the damage of the unequal-thickness annular valve plate of the oil-gas spring is not only affected by the circumferential stress, but also affected by the radial stress, the unequal-thickness annular valve plate will break along the inner circumference, mainly because the unequal-thickness annular valve The max...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G06F17/50
Inventor 周长城赵雷雷潘礼军邵明磊王凤娟于曰伟
Owner SHANDONG UNIV OF TECH
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