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| Failure Mechanism and Model of O-type Silicon Rubber Sealing Ring for Ammunition |
| Received:March 23, 2015 Revised:August 15, 2016 |
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| DOI：10.7643/ issn.1672-9242.2016.04.021 |
| KeyWord:O-ring failure mechanism ammunition |
| Author | Institution |
| YU Bo-biao |
1.Department of Technical Support Engineering, Armored Force Engineering Institute, Beijing , China;2.Department of Weaponry Engineering, Naval University of Engineering, Wuhan , China |
| SONG Tai-liang |
China Defense Science Technology Information Center, Beijing , China |
| WANG Qin-qin |
Troop No.72726 of PLA, Jinan , China |
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| Abstract: |
| Objective To estimate the service life of O-ring with the daily operational data collected so as to provide a basis of the prediction for the service life of ammunition. Methods After analyzing the failure model of O-ring, the empirical equation of failure rate was introduced. Failure rate equation was normalized. At last, the failure rate model of sealing ring was educed by comprehensively considering sealing ring size, contact stress and hardness, fluid viscosity and temperature. Its validity was proven by examples. Results Leakage was the main failure mode of O-type silicone rubber sealing rings. The sealing ring failure rate model was educed after comprehensively considering all the possible factors and the service life of some ammunition was accurately calculated with such model. Conclusion This failure rate model can provide reference for the evaluation of the storage life of certain kinds of ammunition in the ammunition security work. |
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