摘要
基于吊挂与导轨之间的接触动力学,建立了一种机载导弹导轨式发射过程的有限元仿真分析模型,对发射过程的安全性进行深入研究。该方法能综合考虑载机的机动运动、吊挂与导轨之间的碰撞摩擦、导弹的气动载荷及发动机内压等各种因素的影响,来模拟导弹轨上运动的真实物理过程。对某一响尾蛇导弹的典型发射状态进行了仿真分析,并研究了侧向气动力、偏航气动力矩、机体的垂向过载和滚转角速度等对导弹轨上运动过程的影响,分析结果可为导弹设计提供重要参考。该方法具有较高的分析精度和工程实用性,为机载导弹发射过程的安全性问题提供了有效分析手段。
Based on the contact dynamics between hangers and rail, a finite element simulating model for missile rail-launching from an aircraft was presented, and the effect of missile＇s slip angle, shell stress and contact forces on the security of missile＇s rail-launching process was investigated. The effects of aircraft＇s movement, contact forces, aerodynamic forces and missile engine pressure were considered, the real physical process of missile＇s rail-launching movement was simulated. The typical launching state of a AIM-9 missile was investigated, and the influences of aircraft＇s vertical acceleration and rolling angular velocity, missile＇s lateral aerodynamic force and yawing moment on the missile＇s rail-launching motion process were studied. The analysis results provided an important basis for missile designing. It was shown that method is applicable with higher analysis accuracy and easy to use, it can be widely used in the security analysis of missile rail-launching from an aircraft.
出处
《振动与冲击》
EI
CSCD
北大核心
2013年第20期41-47,共7页
Journal of Vibration and Shock
基金
高等学校博士学科点专项科研基金(201132181100002)
江苏高校优势学科建设工程资助项目
关键词
导轨式发射
有限元仿真
接触碰撞
机载导弹
冲击应力
＂rail-launched
finite element simulation
contact-impact
airborne missile
impact stress
