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| Research on Prediction Method of Acceleration Factor of Complete Machine Based on Stress Decomposition Method |
| Received:June 06, 2020 Revised:July 21, 2020 |
| View Full Text View/Add Comment Download reader |
| DOI：10.7643/issn.1672-9242.2021.09.003 |
| KeyWord:grey correlation theory failure rate comprehensive stress failure rate of complete machine |
| Author | Institution |
| DONG Jun-chao |
Beijing Institute of Structure and Environment Engineering, Beijing , China |
| HAN Ming |
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 new method for calculating the acceleration factor of complete machine is proposed in this paper. The failure rate of complete machine is divided step by step according to the sequence of components, failure modes and stresses through quantitative analysis method, so as to obtain the failure rate of each sensitive stress, and then calculate the failure rate of each failure mode under accelerated stress through acceleration model. Finally, the failure rate of complete machine under acceleration stress can be obtained, and then the acceleration factor of the whole machine can be calculated. Taking a typical electronic product as an example, the acceleration factor of the missile computer under the comprehensive environmental stress of temperature, humidity and vibration is expected to be 153.5. |
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