| 摘要: |
| 利用弹性－粘弹性对应原理，分析长期贮存固体推进剂药柱由环境温度变化引起的热应力，计算药柱损伤，并对发动机寿命进行预估。理论分析和算法具有普遍性，可供工程设计参考。 |
| 关键词: 固体火箭推进剂 寿命预测 粘弹性 热应力 累积损伤 |
| DOI： |
| 分类号:V512.3 |
| 基金项目:航空科学基金 |
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| A METHOD FOR SOLID ROCKET MOTOR LIFE PREDICTION |
|
Zhu Zhichun, Cai E
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School of Astronautics, Beijing Univ. of Aeronautics and Astronautics, Beijing, 100083
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| Abstract: |
| n analysis on thermal stress of solid rocket motor grain in storage due to ambienttemperature variation is presented according to elastic-viscoelastic correspondence principle, and theeffects of ageing on mechanical properties of the propellant are included. The damage of grain is calculated and the motor life is predicted. The predicting theory and method can be referred in other relatedtechnical designs. |
| Key words: Solid rocket propellant Life prediction Viscoelasticity Thermal stress Cumulative damage |
