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A method for evaluating the remaining storage life of a zn-40 damping and vibration-damping structure

A technology of ZN-40 and damping structure, which is applied in the direction of instrumentation, design optimization/simulation, calculation, etc., can solve the problems of complex and difficult detection and evaluation methods, aging of ZN-40 damping and damping structure, etc., and achieve simple excitation types, The effect of low vibration energy requirement and easy operation

Active Publication Date: 2022-07-26
BEIHANG UNIV +1
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  • Abstract
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  • Claims
  • Application Information

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Problems solved by technology

[0005] (1) Purpose of the present invention: Aiming at the serious aging phenomenon of the ZN-40 damping vibration reduction structure in the storage process, and the complicated and difficult detection and evaluation methods, etc., to provide a method for evaluating the remaining storage life of the structure, which is a material containing Non-destructive measurement and overall evaluation method of storage state of damping and vibration-reducing structures for analysis of aging law of mechanical properties, analysis of structural dynamic response and estimation of remaining storage life

Method used

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  • A method for evaluating the remaining storage life of a zn-40 damping and vibration-damping structure
  • A method for evaluating the remaining storage life of a zn-40 damping and vibration-damping structure
  • A method for evaluating the remaining storage life of a zn-40 damping and vibration-damping structure

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Embodiment Construction

[0086] The present invention will be described in further detail below with reference to examples.

[0087] The internal material of a damping and vibration reduction structure is a blended damping material based on butyl rubber and silicone rubber (ie ZN-40 damping rubber). In the test, the ZN-40 damping rubber was aged at five temperature grades: 90°C, 110°C, 130°C, 150°C, and 170°C. The permanent deformation rate and hardness data records during material aging are shown in Table 1.

[0088] Table 1 Accelerated aging test data of rubber materials

[0089]

[0090]

[0091] A method for evaluating the remaining storage life of a ZN-40 damping and vibration-damping structure of the present invention, see figure 1 shown, through the following steps:

[0092] Step 1: Analyze the aging law of mechanical properties of rubber materials in ZN-40 damping and vibration reduction structure;

[0093] I. Estimating the parameters of the empirical formula for aging

[0094] Fir...

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Abstract

The present invention provides a method for evaluating the remaining storage life of a ZN-40 damping and vibration-damping structure, which is realized through the following steps under four setting conditions: 1: analyzing the aging law of mechanical properties of the rubber material of the ZN-40 damping and damping structure; 2: establishing ZN‑40 time series analysis model for dynamic response of damping and vibration reduction structures; 3: Establish a list of standard parameter values ​​for the time series model; 4: Identify the aging state based on residual statistical characteristics; 5: Estimate storage life and remaining storage life. Through the above steps, the present invention maps the aging state of the ZN-40 damping and vibration reduction structure to the vibration characteristics of the structure, which facilitates the identification of the aging state of the structure and realizes the overall evaluation without disassembly. The energy requirement is low, and it is not destructive to the structure; the evaluation method is scientific, with good manufacturability, and has broad application value.

Description

technical field [0001] The invention relates to a method for evaluating the remaining storage life of a damping and vibration-damping structure (namely ZN-40 damping and vibration-damping structure) based on butyl rubber and silicone rubber. A method for evaluating the remaining storage life of damping and vibration-damping structures with statistical characteristics Response identification: Qualitative logical relationships and quantitative modelling methods for storage life assessment of damped structures. It maps the aging state of the ZN-40 damping and vibration reduction structure to its vibration characteristics, which is convenient for the identification of the aging state of the structure and further evaluation of the storage life. It is suitable for evaluating the remaining storage life of damping and vibration-absorbing structures with rubber as the main vibration-absorbing and energy-absorbing material. Background technique [0002] Damping and vibration-damping...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G06F30/20G06F119/04G06F119/14
CPCG06F30/20G06F2119/04G06F2119/14
Inventor 马小兵王晗邹新宇周堃
Owner BEIHANG UNIV
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