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提出了坦克火炮身管多体系统力学模型，给出了火炮身管可变形体系统的动力学方程、状态方程及数值解法，分析了火炮身管动态弯曲的计算结果。
The mechanical model of multi-body system of tank gun barrel was put forward. The dynamic equation, equation of state and numerical solution of the barrel body were given, and the calculation results of dynamic barrel bending of gun barrel were analyzed.