| Long-range multibarrel rocket launcher (LMRL) has great strategic significance. The reliability of weapon system cannot be guaranteed, because LMRL mostly uses new technologies and new materials, combined with the level of production and processing. Therefore, the safety analysis of weapon system is needed to do to determine system weaknesses, thereby to improve the design and manufacturing process, to improve overall weapon system performance. This paper studies a LMRL, and uses multi-body dynamics and finite element theory to analyze the driving dynamics and safety of weapon system.Firstly, the simplified kinetic models of front and rear leaf springs have been studied. The finite element models have been established to calculate stiffness characteristics of leaf springs. The leaf springs are simplified as three-link models. The parameters of three-link models have been determined by using Isight integrated optimization method and reverse simulation method, so that the stiffness characteristics of three-link model and finite element model are equal.3D models of all parts of launcher have been established by SolidWorks, and been assembled into a dynamics model of vehicle-road coupling system in ADAMS for driving dynamics.Secondly, the driving dynamics simulations of launcher have been done in different random roads at different speeds. The dynamic response results of weapon system have been gotten. The effect of traveling lock on ride comfort for weapon system has been analyzed. The DOE for launcher has been done to get the best combination of suspension parameters, thereby to slow traveling vibration.Finally, the safety of traveling lock, limiter, locker and frame have been analyzed. The statics analyses of traveling lock, limiter and locker have been done based on the limit forces. The modal of frame has been analyzed. The frame is easy to resonate in the work process. The modal optimization of frame has been done to avoid the frequency of external excitation.
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