航空学报 > 1994, Vol. 15 Issue (12): 1507-1511

固体火箭发动机药柱的长期老化效应分析

冯志刚, 周建平   

  1. 国防科技大学航天技术系, 长沙, 410073
  • 收稿日期:1993-06-29 修回日期:1994-01-15 出版日期:1994-12-25 发布日期:1994-12-25

THE ANALYSIS OF THE LONG-TERM AGING EFFECT OF SOLID PROPELLENT GRAIN

Feng Zhigang, Zhou Jianpjng   

  1. Department of Astronautics, National Univ. of Defen se Tech.Changsha, 410073
  • Received:1993-06-29 Revised:1994-01-15 Online:1994-12-25 Published:1994-12-25

摘要: 粘弹复合固体推进剂为研究对象,通过实验测得其松弛模量,然后反演出适合有限元分析的蠕变柔量形式,进而分析长期贮存老化对药柱力学性能的影响。在对梁的受拉伸与自重情形下的老化作了分析后,举例分析了真实固体火箭发动机药柱的长期老化效应。

关键词: 药柱, 粘弹性, 松弛模量, 蠕变柔量

Abstract: A study of propellent aging,using inversion transfoimation from experimental relaxation functions to creep functions,is presented.The finite element method is intro-duced in the analysis.After having solved the aging problems of beams,the long term ag-ing effect of a solid propellent grain is also analyzed as an example.

Key words: propellent grain, viscoelasticity, relaxation function, creep function

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