国防科技大学学报2017，Vol.39Issue(1)：148-152,5.DOI:10.11887/j.cn.201701023
伞盘结构对大长径比发动机药柱结构完整性的影响
Effects of umbrella slot on the structure integrity of solid rocket motor grain with large aspect ratio
摘要
Abstract
To improve the structural integrity of solid rocket motor grain with large aspect ratio, based on three-dimensional viscoelastic finite element method and taking into account of the temperature load and pressure load, the structural response of a solid rocket motor with large aspect ratio was analyzed, the effects of the umbrella slot and its location on maximum Von Mises strain of the grain were studied, and the variations of the maximum Von Mises strain of the umbrella slot with its width, depth and radius ratio were discussed when the umbrella slot was in the middle of the grain.The results show that the Von Mises strain is reduced when the umbrella slot is in the middle of the grain;increasing the width, depth or choosing the best radius ratio can reduce the maximum Von Mises strain of the umbrella slot.The conclusions are beneficial for designing the grain configuration of solid rocket motor.关键词
固体发动机/大长径比/药柱/伞盘/应力应变分析Key words
solid rocket motor/large aspect ratio/grain/umbrella slot/stress and strain analysis分类
航空航天引用本文复制引用
申志彬,姜人伟,职世君..伞盘结构对大长径比发动机药柱结构完整性的影响[J].国防科技大学学报,2017,39(1):148-152,5.基金项目
国家自然科学基金资助项目(U1404106) （U1404106）
中国博士后科学基金资助项目(2014M552684) （2014M552684）
