【作者】 李兵； 陈仁越； 何正嘉；

【Author】 Li Bing,Chen Yenyue,He Zhengjia State Key Lab.for Manufacturing Systems Engineering,Xi’an Jiaotong University,Xi’an 710049,PRC

【机构】 西安交通大学机械工程学院机械制造系统工程国家重点实验室；

【摘要】 以火炮身管滑板与导轨间隙为研究对象,考虑身管滑板与导轨连接为一典型移动副的特点,将其间隙简化为悬臂梁间隙模型。针对悬臂梁间隙模型,建立了影响悬臂梁间隙因素的动力学模型和有限元模型,分析了间隙刚度对悬臂梁系统固有频率的影响,绘制出了系统固有频率随间隙大小变化的趋势曲线,并进行了ANSYS仿真。悬臂梁间隙实验验证了理论模型的正确性和有效性。通过正弦激励条件下悬臂梁间隙实验和火炮间隙实验,从信号中找到了反映间隙大小变化的信号特征,为调整火炮身管滑板与导轨间隙,提高火炮的射击精度提供了重要依据。更多还原

【Abstract】 Considering the sliding pair is the typical characteristics of slide plate of gun barrel and guide’s contact,the clearance is often simplified to the cantilever clearance.Dynamics modeling and finite element mathematical model which influence the factors on cantilever clearance were established by cantilever clearance modeling.The influence of clearance exposure and the flexibility of clearance equivalent continuous material to the cantilever clearance systems is Simulated.The result of the simulation is that reflect clearance size:in the same intensity under sinusoidal excitation,with enlargement of the clearance,the peak value of gun barrel time-domain signal is smaller.The research results provided an important basis to the adjustment of Clearances between slide plate of gun barrel and guide,and the guns’ firing accuracy.更多还原