A Box-type Rocket Launchers Simulation And Key Technologies

In this thesis, launching characteristic simulation for designing multiply rocket launch system is conducted using multi-rigid-body dynamic theories and visual prototype technology. The dynamic analysis investigation of detent catch and direction pipe are done using momentum finite element method.Main research work in this thesis include as follow as: (1) Lagrange equations of the whole multiply rocket launch system are founded using multi-rigid-body dynamic theories. It makes theoretical foundation for further investigation. (2) Three-dimensional models of multiply rocket launch system are founded using I-DEAS software and its dynamic models are founded using ADAMS software . Constraining relations among rigid bodies are simulated. Exterior force caused by multiply rocket launch system firing is analyzed. Dynamic simulation is carried out when rocket firing. Curves of initial displacement of direction pipe and curves of initial velocity and acceleration of rocket projectile changing as time are obtained. It can provide a theory foundation for evaluating dynamic characteristics of rocket launch system such as initial interference and improving its performance. (3) Detent catch is an important parts of rocket launch system. In this thesis, initial designing is carried out and dynamic analysis of finite element are done using LS-DYNA software. The simulation calculation is done about action course of detent catch. (4) The direction pipe is another important parts of rocket launch system. Glass-steel direction pipes are used in the rocket launch system. The simulation calculation of rocket launch system firing course is done using LS-DYNA software. The distributing of stress and strain of direction pipe changing as time are obtained.