温度载荷下伞盘深度与脱粘深度对药柱应变的影响  

Influence of umbrellar slot depth and debonded depth on strain of grain under temperature load

作　　者：李磊[1] 雷勇军[1] 申志彬[1] 唐国金[1] 

机构地区：[1]国防科技大学航天与材料工程学院,长沙410073

出　　处：《固体火箭技术》2010年第3期285-288,共4页Journal of Solid Rocket Technology

基　　金：高等学校博士学科点专项科研基金(20069998002);教育部新世纪优秀人才支持计划(NCET-08-0148);"十一五"武器装备预研项目

摘　　要：为了有效降低含伞盘固体火箭发动机药柱在温度载荷下的应变水平,基于三维粘弹性有限元分析方法,利用有限元分析软件MSC.Nastran,对不同伞盘深度和人工脱粘层深度的发动机药柱进行了应力-应变分析。研究结果表明,伞盘深度和脱粘深度对伞盘最大Von Mises应变有较大影响,其中伞盘深度对最大Von Mises应变的影响规律随脱粘深度的不同发生明显改变。所得结论可为固体火箭发动机药柱设计提供有益参考。To effectively reduce the strain of solid rocket motor grain with umbrellar slot under temperature load,the stress and strain of the grain with different umbrellar slot depth and stress-release layer depth were studied,on the basis of three-dimensional viscoelastic finite element method by means of the finite element software MSC.Nastran.The results show that the influence of umbrellar slot depth and stress-release layer depth on the maximum Von Mises strain of umbrellar slot is significant and the correlation between the maximum Von Mises strain and umbrellar slot depth varies with stress-release layer depth.The conclusions are useful for designing solid rocked motor grain configuration.

关 键 词：固体火箭发动机 药柱 三维 粘弹性 有限元法 

分 类 号：V435[航空宇航科学与技术—航空宇航推进理论与工程]