导弹发射时导发架的受力情况很复杂，其动力学特性的研究是一个难点。本文将导发架看成一个两端简支的梁，导弹简化为一个沿导发架移动的质点，建立了导发架的动力学模型，并运应用振型分解法对模型的解进行初步研究。所得结果为未来的研究奠定一定的基础。% The force working on missile launcher is very complex during missile launching , the re-search on dynamic characteristic of missile launcher is a difficult problem .In this paper, dynamic model of missile launcher is established while missile launcher is looked as a simply supported beam and missile is simplified as a moving particle along rack of missile launcher .The model solutions are investigated by mode analysis method.The conclusion lays a foundation for further research .
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