计及自动机碰撞的机枪发射系统动力学仿真研究

SIMULATION OF THE MACHINE GUN SYSTEM DYNAMICS CONSIDERING ACTION'S IMPACT

用有限元法对机枪发射系统进行动力学响应分析时 ,其自动机构件的碰撞力大小常不宜确定 .该文利用多刚体动力学易于解算碰撞力的特点 ,为有限元提供计算载荷 ,给出计算实例 .证明采用多体动力学和有限元法互相协同的方法对机枪发射系统进行仿真 ,既有助于提高仿真效率和精确度 ,也可为进一步参数修改和结构优化提供方便 .

In the simulation of machine gun dynamics with finite element method(FEM), the action's impact is unobtainable. The multibody dynamics being easy to get the value of impact is used to provide calculating load for FEM. The calculating example is given. Combining multibody dynamics with FEM, the maching gun launching system is simulated. It is proved to be helpful for improving simulation efficiency and precision, and be useful to parameter modification and structure optimization.