| 机械结构使用寿命和检修周期 |
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| 引用本文： | 凌静,高镇同.机械结构使用寿命和检修周期[J].车辆与动力技术,1990(3). |
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| 作者姓名： | 凌静 高镇同 |
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| 作者单位： | 北京理工大学，北京航空航天大学 |
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| 摘 要： | 本文分析了常用的安全寿命设计法和损伤容限设计法,提出了结合两者进行可靠性设计的一种新方法。为获得具有一定存活率和置信度的安全裂纹形成寿命和安全裂纹扩展寿命,对分散系数作了论述。根据由若干关键元件组成的串联系统可靠性分析模型,建立了在指定可靠度下整体结构安全裂纹形成寿命和安全裂纹扩展寿命的关系曲线,从而合理地确定结构使用寿命和检修周期。
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| 关 键 词： | 机械结构 可靠性 寿命 检修周期 |
THE SERVICE LIFE AND INSPECTION PERIODS OF A MECHANICAL STRUCTURE |
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| Ling jing.THE SERVICE LIFE AND INSPECTION PERIODS OF A MECHANICAL STRUCTURE[J].Vehicle & Power Technology,1990(3). |
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| Authors: | Ling jing |
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| Affiliation: | Ling jing (Beijing Institute of Technology) Gao zhantong (Beijing University of Aeronautics and Astronautics) |
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| Abstract: | In this paper, usual methods of safe life design and damage tolerance design are discussed, and a new method of reliability design is presented in combination with safe life design and damage tolerance design. To obtain safe crack initiation life and safe crack propagation life with a specified reliability and confidence level, statistical scatter coeffecients are introduced. According to the model for reliability analysis of a series structural system consisting of some key components, a relationship between safe crack initiation life and propagation life of the whole structure with a specified reliability is set up. This relationship can help you to determine the service life and inspection periods of the structure reasonably. |
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| Keywords: | mechanical construction reliability life inspection period |
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