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| An Analysis Method of Automatic Rifle Reliability Considering Environmental Factors |
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| DOI：10.7643/issn.1672-9242.2022.06.003 |
| KeyWord:environmental factors automatic rifle Bayesian network fault tree environmental influence factors common cause failure |
| Author | Institution |
| FANG Yi-chuan |
School of Mechanical Engineering, Nanjing University of Science and Technology, Nanjing , China |
| ZHAO Yun |
Reserve Joint Logistic Support Brigade 3, Chongqing , China |
| WANG Yong-juan |
School of Mechanical Engineering, Nanjing University of Science and Technology, Nanjing , China |
| SHA Jin-long |
No.208 Research Institute of China Ordnace Industries, Beijing , China |
| YUN Hang |
School of Mechanical Engineering, Nanjing University of Science and Technology, Nanjing , China |
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| Abstract: |
| In order to analyze the influence of environmental factors on the reliability of automatic rifle system, this paper firstly introduces Bayesian network theory, and then divides the reliability modeling of automatic rifle system into two modules:rigid ejection mechanism and magazine feeding mechanism, based on which the fault tree modeling is carried out from three aspects:design and manufacture, use factors and environmental factors. After transforming the fault tree into a Bayesian model, the reliability of the automatic rifle system considering the common cause failure effect caused by environmental factors is calculated based on the given failure probability of basic event and the introduced environmental influence factor. At the system level, the reliability of the system will be reduced by 8.1% due to the influence of environmental factors.Therefore, analyzing the reliability of automatic rifle system, it is more realistic to consider the CCF effect caused by environmental factors, and the reliability of subsystem is often overestimated when the CCF effect is not considered. |
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