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Quantitative analysis method for response characteristics of aging state of rubber O-shaped ring sealing structure

A technology of aging state and response characteristics, applied in design optimization/simulation, instrumentation, geometric CAD, etc., can solve problems such as high-precision modeling and efficient solution of rubber O-ring sealing structure, and achieve the effect of ensuring safety

Pending Publication Date: 2022-07-01
XIAN TECHNOLOGICAL UNIV
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Problems solved by technology

[0006] In order to solve the problem that the existing finite element method cannot realize the high-precision modeling and efficient solution of the aging state of the rubber O-ring sealing structure, the invention provides a quantitative analysis method for the response characteristics of the aging state of the rubber O-ring sealing structure

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  • Quantitative analysis method for response characteristics of aging state of rubber O-shaped ring sealing structure
  • Quantitative analysis method for response characteristics of aging state of rubber O-shaped ring sealing structure
  • Quantitative analysis method for response characteristics of aging state of rubber O-shaped ring sealing structure

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[0026] In order to make the objectives, technical solutions and advantages of the present invention clearer, the present invention will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention, but not to limit the present invention.

[0027] see figure 1 , a method for quantitative analysis of the response characteristics of the aging state of the rubber O-ring sealing structure provided by the embodiment of the present invention, the process is as follows figure 1 shown.

[0028] First, the aging samples and aging parameters of rubber materials with different aging days were obtained through accelerated aging and mechanical property testing of hot air.

[0029] Then, the finite element model of the rubber O-ring sealing structure is established by the modeling-import-preprocessing method, in which the different aging...

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Abstract

The invention relates to a mechanical structure health monitoring method, in particular to a quantitative analysis method for response characteristics of the aging state of a rubber O-shaped ring sealing structure. The problem that an existing finite element method cannot achieve high-precision modeling and efficient solving of the aging state of a rubber O-shaped ring sealing structure is solved. According to the technical scheme, the method comprises the following steps: firstly, obtaining rubber material samples with different aging days, and evaluating the aging degree of the rubber material through a mechanical property test; then a finite element model of the rubber O-shaped ring sealing structure is established in a modeling-importing-pretreatment mode, different aging states of an equivalent model are achieved by setting different compression elasticity moduli of a rubber O-shaped ring, and different compression ratios of the rubber O-shaped ring are achieved by setting boundary conditions; and finally, through modal analysis and random vibration analysis, obtaining a change rule between the aging state and the response characteristic under different compression ratios.

Description

technical field [0001] The invention relates to a method for monitoring the health of a mechanical structure, in particular to a method for quantitatively analyzing the response characteristics of the aging state of a rubber O-ring sealing structure. Background technique [0002] Rubber has excellent elastic properties and resistance to compressive deformation, which can effectively prevent the leakage of pressure media. The rubber O-ring sealing structure is widely used in machinery and equipment in many fields such as aviation, aerospace, navigation, energy and transportation. [0003] During the long-term storage and use of mechanical equipment, due to the influence of environmental factors such as temperature, humidity, corrosion and their changes, the rubber seals inevitably experience sticky, hard, cracked or micro-cracked aging phenomena, resulting in their The physical, chemical and mechanical properties are reduced, resulting in the deterioration of the sealing perf...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06F30/17G06F30/23G06F119/04G06F119/14G06F119/08G06F113/08
CPCG06F30/17G06F30/23G06F2119/04G06F2119/14G06F2119/08G06F2113/08
Inventor 瞿金秀郭金柱史小伟黄家琦曹蔚孙金绢
Owner XIAN TECHNOLOGICAL UNIV
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