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| Analysis of Fracture Failure in a Tail Wing Transmission Component of Aviation Ammunition under Vibration Environment |
| Received:May 20, 2024 Revised:July 06, 2024 |
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| DOI：10.7643/issn.1672-9242.2024.10.007 |
| KeyWord:aviation ammunition vibration environment failure analysis vibration fatigue simulation fatigue life failure reproduction |
| Author | Institution |
| CHAO Weizhao |
Norinco Group Aviation Ammunition Institute, Harbin , China |
| SONG Zhuoyi |
Norinco Group Aviation Ammunition Institute, Harbin , China |
| YANG Chunqiu |
Norinco Group Aviation Ammunition Institute, Harbin , China |
| QIU Shuang |
Norinco Group Aviation Ammunition Institute, Harbin , China |
| ZHAO Yuhang |
Norinco Group Aviation Ammunition Institute, Harbin , China |
| HUANG Xiaolan |
Norinco Group Aviation Ammunition Institute, Harbin , China |
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| Abstract: |
| Fracture failure occurred in a tail wing transmission component of aviation ammunition during the hot test if engine, so the work aims to analyze the cause of the failure, reproduce the failure in the laboratory, and optimize the structure design to improve reliability. Firstly, the fracture morphology of the tail wing transmission component was analyzed to determine the nature of the damage. Secondly, the frequency domain vibration fatigue simulation method was used to analyze the vibration fatigue life of the maximum stress damage location of the tail wing transmission component in different states, and to confirm the cause of failure. Thirdly, the failure mode of the tail wing transmission component in the field was reproduced through laboratory test and finally, the effectiveness of the improvement was verified through environmental test. The maximum damage location of the tail wing transmission component under simulated vibration condition was close to the failure location, and the vibration fatigue simulation life in the locked state and unlocked state was 7 516 s and 34 710 s, respectively, clarifying the cause of failure. The failure was reproduced through laboratory vibration tests, and the mechanisms were consistent. The improvement methods were effective and passed the test evaluation. The methods of failure analysis, verification, and improvement are sufficient and effective, which can serve as a reference for handling failures of similar equipment under vibration environment. |
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