Abstract
In order to meet the particular environment and requirements of launch, the model and vibration characteristics of a complex launch structure system need to be analyzed. In this paper, the complex structure system is regarded as a multi-rigid-flexiblebody system using the transfer matrix method for multibody systems (MSTMM). By establishing the transfer relationship between various components, the overall transfer matrix and overall transfer equation of this system are obtained, and then the natural frequencies are computed. Compared with the finite element computed results, the effectiveness of the model is verified. By putting the transient load on the bottom of a cylinder during the projectile moving, the dynamics responses of the cylinder under a single fire are yielded, which provides influential research means for dynamics model and vibration characteristic analysis of the complex structure system.
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