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O-shaped sealing ring rapid selection method based on finite element simulation analysis

A technology of simulation analysis and sealing ring, applied in design optimization/simulation, special data processing applications, instruments, etc., can solve the problems of O-ring rubber stress relaxation, high cost of sealing test, long design and evaluation cycle, etc., to achieve Reduce the test cost, avoid the sealing test, the effect of good use value

Inactive Publication Date: 2017-10-24
OCEANOGRAPHIC INSTR RES INST SHANDONG ACAD OF SCI
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AI Technical Summary

Problems solved by technology

If the compression amount of the O-ring is too small, it will cause leakage, and if the compression is too large, it will cause the rubber stress of the O-ring to relax and cause leakage.
In the design process of various sealing systems, the cost of sealing tests is high, and the design and evaluation cycle is long, which greatly prolongs the product design and development cycle

Method used

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  • O-shaped sealing ring rapid selection method based on finite element simulation analysis
  • O-shaped sealing ring rapid selection method based on finite element simulation analysis
  • O-shaped sealing ring rapid selection method based on finite element simulation analysis

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Embodiment Construction

[0032] Attached below Figure 1-7 And the specific embodiment will further illustrate the present invention.

[0033] (1) Determine the size of the O-ring, working environment and other parameters

[0034] In this embodiment, an O-ring with an inner diameter of 56 mm and a cross-sectional diameter of 3.55 mm is used as an example to establish a model, and a simulation analysis is carried out in a working environment of 60 MPa to determine the material hardness and installation conditions of the O-ring, and calculate the size of the safety margin. Then evaluate its sealing performance.

[0035] (2) Determine the rubber-like physical nonlinear material function model - determine the rubber neo-Hookean Mooney-Rivlin model

[0036] For rubber-like physical nonlinear materials, the neo-Hookean Mooney-Rivlin simplified function model to determine the O-ring material is:

[0037] W=C 10 (I 1 -3) (1)

[0038] In the model, the coefficient C 10 equal to half of the shear modulus...

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Abstract

The invention belongs to the technical field of finite element analysis, and discloses an O-shaped sealing ring rapid selection method based on finite element simulation analysis. The method includes the following steps of determining parameters, such as the size and working environments, of an O-shaped sealing ring, determining a rubber physical nonlinear material function model, establishing a finite element model, conducting simulation analysis on relations among the material hardness, installation conditions, environment pressure and sealing surface contact pressure, calculating the material hardness and installation conditions of the O-shaped sealing ring in an undetermined environment, and calculating the sealing performance of the O-shaped sealing ring. According to the technical scheme, the method is simple, complex sealing tests are avoided, the test cost is reduced, the design and evaluation period is greatly shortened, and the method can be applied to design and improvement of a sealing system and also has a good application value in the aspect of sealing reliability evaluation.

Description

technical field [0001] The patent of the present invention relates to the technical field of sealing system design, especially a method for quick selection of O-ring seals based on finite element simulation analysis, which is mainly suitable for O-ring seals in sealing environments such as industrial pipelines, high-pressure vessels, and marine instruments. Quick selection. Background technique [0002] O-shaped sealing ring is a kind of rubber ring with a circular cross section. It is simple in shape, easy to manufacture and low in cost. It is the most widely used extrusion type seal in hydraulic and pneumatic systems. It is generally installed in the sealing groove. , can be used for both static seals and reciprocating motion seals, not only can be used alone, but also a basic part of many combined sealing devices. [0003] Whether the O-ring has a good sealing effect largely depends on whether the matching between the size of the O-ring, the size of the groove and the in...

Claims

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Application Information

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IPC IPC(8): G06F17/50
CPCG06F30/17G06F30/23
Inventor 宋文杰刘鹏蒋庆林胡军锋李新娟贺江温京亚高金龙
Owner OCEANOGRAPHIC INSTR RES INST SHANDONG ACAD OF SCI
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