Study on Launch Dynamics of Self-Propelled Artillery Based on Transfer Matrix Method of Multibody System

Abstract

Due to the importance of increasing the firing precision of self-propelled artillery system corresponding to the projectile impact point, the launch dynamics of self-propelled artillery based on the transfer matrix method for multibody system (MSTMM) is studied in this paper. By using MSTMM to study launch dynamics of self-propelled artillery, there is no need of global dynamical equation of the system, the order of the system matrix is low, the computational speed is high, and it meets the requirements of dynamics of self-propelled artillery multibody system. The dynamical model of multibody system and its topological figure, the overall transfer equation, overall transfer matrix, characteristics equation and generalized coordinates equation, and launch dynamical equation of self-propelled artillery are developed. The vibration characteristics, initial disturbance of projectile, dynamical response, and firing dispersion for self-propelled artillery are simulated. The results of eigenfrequency and the time history of system dynamics got by simulations and experiments have good agreements. The study results can be used to improve the firing precision and design of self-propelled artillery.