Probabilistic Storage Life Prediction of Solid Rocket Motor Grain

doi:10.3969/j.issn.1000-1093.2012.03.009

Abstract

Abstract: A probabilistic storage life prediction model of solid rocket motor（SRM）grain is proposed based on the viscoelastic stochastic finite element method（SFEM）and the temperature accelerated aging test of solid propellant. The relationship between the digital characteristics of solid propellant property parameters of solid propellant and storage time is derived from the statistical analysis of aging test data, and the mean and standard deviation of grain structural response are calculated using 3D viscoelastic response surface SFEM. The structural reliability of a certain SRM grain at the different storage times is analyzed, and its probabilistic storage life is estimated. The methods are available for the designers and users of SRM.

Key words: spacecraft structure and design, solid rocket motor, viscoelastic grain, stochastic finite element method, response surface, probabilistic storage life prediction

CLC Number:

V435.13

TANG Guo-jin， SHEN Zhi-bin， TIAN Si-peng， YANG Dong. Probabilistic Storage Life Prediction of Solid Rocket Motor Grain[J]. Acta Armamentarii, 2012, 33(3): 301-306.

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