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| Reliability Assessment Method of the Flight Warhead |
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| DOI：10.7643/issn.1672-9242.2022.05.009 |
| KeyWord:small sample warhead reliability assessment L-M method safety factor method maximum entropy experiment |
| Author | Institution |
| DONG Jun-chao |
Beijing Institute of Structure and Environment Engineering, Beijing , China |
| ZHU Chong-yang |
Beijing Institute of Structure and Environment Engineering, Beijing , China |
| CHEN Jin-hu |
Beijing Institute of Structure and Environment Engineering, Beijing , China |
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| Abstract: |
| A reliability assessment method of the flight warhead is proposed under the limitation of the high reliability and small sample in this paper. The structural function of the warhead is analyzed, the reliability block is established with the shell strength, the stability and normal explosion of the main charge. The reliability of the warhead system is assessed by utilizing the L-M method. Firstly, the safety factor method through the allowable value of the standard design is applied, the stress interfere model and the safety factor is integrated. The reliability assessment of the shell strength is carried out. Secondly, the experiment data of the warhead is applied, the stability and normal explosion of the main charge is assessed through the maximum entropy experiment. Finally, the reliability data of the units are turned into the success or failure data, the reliability assessment of the warhead is carried out with the L-M method. The reliability of the shell strength, the stability and normal explosion of the main charge is computed under the situation of small sample. The equivalent success number and failure number is obtained, and the flight reliability of the warhead is assessed with the experiment data. The experiment data of the development stage is fully considered, the reliability assessment of the warhead with the limitation of the high reliability and small sample is carried out effectively. |
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