一种新型弹体结构的导弹分离动力学建模与仿真

Separation Dynamics Modeling and Simulation for Missile with A New Type of Body Structure

根据一种新型弹体结构,研究了导弹的分离动力学问题。为了保证分离过程的安全,避免弹头与舱段、整流罩发生碰撞,必须对分离过程中弹头、舱段以及整流罩的运动特性进行分析。推导了整流罩锁死前和舱段组成多体系统的动力学方程并设计了整流罩锁死后舱段和弹头的碰撞判断条件。通过计算机仿真,验证了所建模型的有效性,得出了分离过程中整流罩和舱段每一时刻的运动参数以及铰链所受的作用力,并对计算结果进行了分析,最后验证采用垂直分离这种方案可以安全进行分离。

According to a new type of missile body structures,there is a study of the missile separation dynamic problems.In order to ensure the safety of the separation process,avoiding warheads hit body and fairings it need to make a movement characteristic analysis of the warhead,body and fairings during the separation process.Establishing multibody system dynamic equations before the fairings locked and designing a conditions of collision determination after the fairings locked.Then making a computer simulation to verify the validity of the model and get the body and fairings ＇ parameters of every moment during separation process.Finally analyzing the calculation results,and have a conclusion is that vertical separation of the program can be safely separated.