摘要
为探讨复合材料密封盖定向断裂机理,采用动态非线性有限元计算和冲击实验相结合的方法,研究了密封盖在火箭弹引信反向冲击下断裂破坏过程及断裂机理,探讨了相邻火箭弹燃气射流正向冲击下密封盖拓扑自锁及其承载能力,并将有限元分析与冲击实验结果进行了对比,两者吻合良好。结果表明,拓扑自锁密封盖满足定向断裂要求,能保证引信体的安全性和可靠性,燃气射流冲击力不会对密封盖造成破坏。
Combining dynamic nonlinear finit element analysis and impact test,the process and principle of directional fracture of a seal cover under the opposite direction impact of a rocket fuze,and the topologically self-locking and bearing load capacity of the seal cover under the forward impact of the adjacent rocket burning gas jet flow were studied,in order to explore the directional fracture principle of a composite seal cover.A good agreement was obtained after comparison between the finit element analysis results and the impact test ones.The results showed that the topologically self-locking seal cover satifies the requirement of directional fracture,the safety and the reliability of the fuze body are ensured and the seal cover will not be destroyed under the action of the impact force of the rocket exhaust.
出处
《振动与冲击》
EI
CSCD
北大核心
2010年第4期77-80,共4页
Journal of Vibration and Shock
基金
南京工程学院科研启动基金项目(KXJ08005)
关键词
结构动力学
密封盖
有限元
定向断裂
冲击
structural dynamics
seal cover
finite element method(FEM)
directional fracture
impact
