| In this paper, the virtual prototyping technology and the method of rocket launching dynamics are used to simulate and analyze the launching process of 107 mm tractor rocket. The simulation analysis to estimate the affect on the rocket launching accuracy by the dynamic characteristic when the rocket-launch launched on the different angle and various of road surface conditions, provide the best launching conditions and launching status when the rocket-launch launched.For this purpose, first of all, three-dimensional model of the rocket-launch is established by using the software of CAD; Based on virtual prototyping technology, the method of finite element analysis could be used to analyze the flexible body by modal analysis, the linking problems between the various road surface and rocket-launch can be solved using contact theory, eventually the dynamics model about the whole rocket-launch system is established; The whole launch system in different road surface and different angle conditions is simulated and analyzed using the rigid dynamics and flexible dynamics theories, and the launched dynamic characteristic of rocket-launcher can be obtained, the best launching state of rocket-launch and the influence by the various disturbances when rocket-launch launched also can be got from the analysis of vibration data. Through the research of the vibration data that caused by various factors, we also can provide a theoretical basis and technological methods for evaluating and controlling launching accuracy. |
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