Modeling and Simulation of Multi-body Dynamic for Rocket-Assisted Torpedo Separation
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摘要: 通过分析助飞鱼雷运载体-分离舱组成的多刚体系统的结构与受力情况, 建立了组合体运动的拉格朗日方程, 并采用4阶Runge-Kutta法对给定初始条件下组合体的运动状态进行了仿真计算, 通过和飞行试验数据对比, 验证了多体动力学模型的正确性, 为分析雷箭分离过程的安全性提供了理论支撑。Abstract: This paper analyzes the structure and force of the multi-rigid-body system composed of vehicle and separating cabin, establishes a Lagrange equation of multi-body dynamic model, and then simulates the motion state of the com-bined system in a given initial condition by fourth-order Runge-Kutta method. The multi-body dynamic models are veri-fied by comparing the simulation results with the test ones. This study may provide a basis for safety analysis of the separation process of rocket-assisted torpedo.
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Key words:
- rocket-assisted torpedo /
- multi-body dynamic model /
- Lagrange equation
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