车载武器在后坐力冲击作用下的振动响应

Vibration Response of Vehicle-Mounted Weapons Under Recoil Shock

为了提高车载武器的射击精度和稳定性,基于振动力学理论,构建武警无人战车车体的四自由度动力学模型,得到系统的固有频率及主振型.对后坐力冲击函数进行简化处理,最终得到系统在后坐力冲击作用下的响应函数.分析结果表明:在后坐力冲击作用下,车体的俯仰角最大值在3°左右,衰减周期为0.5s,前轮的振幅比后轮的振幅稍大.

In order to improve the firing accuracy and stability of vehicle-mounted weapons,the paper takes armed police unmanned combat vehicle as the case,builds the four-DOF dynamic model based on the vibration mechanics theory,gains inherent frequency and principal vibration mode of the system.Then the recoil impulse function is simplified and the response function of the system under the impact of recoil is obtained in the end.Analysis results show：The maximum pitching angle is about 3degrees under impact of recoil;the decay period is about 0.5second.The amplitude of the front wheel is slightly larger than the rear one.