随机载荷下药柱强度累积损伤可靠性计算

THE RELIABILITY CALCULATON OF ACCUMULATIVE DAMAGE TO GRAIN STRENGTH UNDER RANDOM LOADING CONDITION

关键词:  推进剂药柱  强度  可靠性预计

Key words:  Propellant grain  Strength  Reliability prediction

摘要:

本文对固体导弹飞行和运输中载荷的随机性进行了分析,对随机载荷下药柱强度累积损伤的可靠性模型进行了推导,得出了可靠性计算模型。该模型可提供计算固体导弹的飞行和运输中强度可靠性的定量计算作参考。文中进行了实例计算,计算结果与实际基本符合。

Abstract:

In ths paper, the random distribution of load on solid missile during flying and transportation is analysed. The reiabilily model of accumulative damage to grain Strength is deduce, and the reliability calculating model is obtained.This model can offer a reference for calculating quantitatively the strength reliability of the solid missile during flying and transportation. A example is presented in this paper and the calculating results agree well with the practical situation.