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Method for evaluating residual storage life of ZN-40 damping vibration attenuation structure

A ZN-40, vibration-damping structure technology, applied in instrumentation, design optimization/simulation, calculation, etc., can solve the problems of ZN-40 damping and vibration-damping structure aging, complicated and difficult detection and evaluation methods, etc.

Active Publication Date: 2021-05-11
BEIHANG UNIV +1
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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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  • Method for evaluating residual storage life of ZN-40 damping vibration attenuation structure
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  • Method for evaluating residual storage life of ZN-40 damping vibration attenuation structure

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Embodiment Construction

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

[0087] The internal material of a damping and vibration-reducing 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 levels of 90°C, 110°C, 130°C, 150°C, and 170°C. The permanent deformation rate and hardness data records during the aging process of the material are shown in Table 1.

[0088] Table 1 Rubber material accelerated aging test data

[0089]

[0090]

[0091] The present invention a kind of ZN-40 damping damping structure residual storage life evaluation method, see figure 1 As shown, it is realized through the following steps:

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

[0093] I. Estimation of Aging Empirical Equation Parameters ...

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Abstract

The invention provides a method for evaluating the residual storage life of a ZN-40 damping vibration attenuation structure, and the method is realized under four setting conditions through the following steps: 1, analyzing the aging law of the mechanical property of a rubber material of the ZN-40 damping vibration attenuation structure; 2, establishing a dynamic response time sequence analysis model of the ZN-40 damping vibration attenuation structure; 3, establishing a time sequence model standard parameter value list; 4, carrying out aging state identification based on residual statistical characteristics; and 5, estimating storage life and residual storage life. Through the steps, the aging state of the ZN-40 damping vibration attenuation structure is mapped to the vibration characteristics of the structure, so that the aging state of the structure can be identified conveniently, and disassembly-free overall evaluation is realized; the excitation type is simple, operation is convenient, the requirement for vibration energy is low, and damage to the structure is avoided; the evaluation method is scientific and good in manufacturability, and has wide popularization and application values.

Description

technical field [0001] The invention relates to a method for evaluating the remaining storage life of a damping and vibration-reducing structure (that is, a ZN-40 damping and vibration-reducing structure) based on butyl rubber and silicon rubber. It is a method based on dynamic response timing analysis theory and residual sequence Statistical characteristics of the remaining storage life evaluation method of the damping structure, it is aimed at the accelerated aging test data of the rubber in the ZN-40 damping structure and the vibration response data of the damping structure, and establishes the accelerated storage test, structural simulation analysis, dynamic Response Identification Qualitative Logical Relationships and Quantitative Modeling Approaches for Storage Life Assessment of Vibration Damping Structures. It maps the aging state of the ZN-40 damping and vibration-reducing structure to its vibration characteristics, which is convenient for identifying the aging state ...

Claims

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Application Information

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Patent Type & Authority Applications(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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