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| Study on Anti-Loosening Performance of Different Gasket Structures Based on Vibration |
| GAO Xuemin 1, 2 , SHI Dapeng 1, 2 , FENG Shaowei 3 , GUAN Yue 1, 2 , YAN Lu 3 , YANG Dongmei 1, 2 |
1. Henan Aerospace Precision Machining Co., Ltd., Xinyang 464000, China;
2. Henan Key Laboratory of Fastening Connection Technology, Xinyang 464000, China;
3. Beijing Institute of Aerospace Systems Engineering, Beijing 100076, China |
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Abstract The anti-loosening performance of fasteners for a certain type of aerospace under different gasket structures is analyzed. Taking the fasteners of M16 specification as the research object, the influence of different gasket structures on the anti-loosening performance, friction coefficient of support surface, friction coefficient of thread and clamp force and the corresponding variation of M16 fasteners under the actual installation environment of a certain type of spaceflight are studied. The results show that: under the same assembly conditions, the coefficient of friction between bearing surface changes greatly due to the different gasket structures, and there is a great difference in the axial clamp force under the same tightening torque. The anti-loosening performance of NordLock gasket and double-sided oblique gear gasket is best. Although the combination of flat gasket and spring gasket has a certain anti-loosening ability, the failure probability is high. However the anti-loosening performance flat gasket and HS gasket is the worst.
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2022, 
