装甲车辆用立式弹药舱的设计与动力学分析  

Design and Dynamics Analysis of Vertical Ammunition Cabin for Armored Vehicle

作　　者：张雷雨[1] 李剑锋[1] 杨洋[2] 

机构地区：[1]北京工业大学机械工程与应用电子技术学院,北京100124 [2]北京航空航天大学机械工程及自动化学院,北京100191

出　　处：《兵工学报》2017年第5期843-851,共9页Acta Armamentarii

基　　金：中国博士后科学基金项目(2016M600021);国家自然科学基金项目(61273342;51675008)

摘　　要：为分析输送链条的动力学特性和弹药的稳定性,将所有链节及弹架两侧双排滚子简化为弹簧阻尼单元,采用多体系统动力学和运动弹性动力学理论,建立输送链条的完整动力学模型和弹药的稳定性模型。借助Matlab软件,对输送链条的整体动力学模型进行数值仿真,并求解弹药的稳定性模型。通过数值仿真结果可知:在不同驱动功率下输送链条的速度、加速度均窄幅波动;轨迹线的形状特征决定了弹药离心力的动力学响应和突变特性,离心力的突变特性对弹药运动法线方向稳定性具有较大的影响,而弹药在运动切线方向上的稳定性主要受自身惯性和输送链条的动力学参数影响。根据弹药上部的摆动位移响应可知,弹药在运动法线方向和切线方向具有较好的动态稳定性。采用试验测量方法,得到输送链条的切线方向加速度与弹架的法线方向加速度值,测量数据与仿真结果较为吻合。The vertical ammunition cabin possesses the functions of ammunition storage, recognition and automatic selection. The ammunition vertically placed in the cabin is circularly dragged along the opti- mum ammunition trajectory by the drive chain. In order to analyze the dynamic properties of drive chain and the stability of ammunition, all links of drive chain and the double-row rollers of ammunition rack are simplified as spring-damper elements. The full dynamics models of drive chain and the stability model of ammunition are established by use of multi-body dynamics and kineto-elastodynamics methods. A numeri- cal simulation of the full dynamics models is performed by adopting Matlab software. The stability model of ammunition is solved. Simulated results show that the velocity and acceleration of drive chain fluctuate within a small range. The dynamic response and drastic characteristic of centrifugal forces are dominated by the shape feature of the trajectory. The normal stability of ammunition is influenced by the drastic characteristic. The tangential stability is determined by the inertia forces of ammunition and the dynamic parameters of drive chain. The analysis shows that the ammunition has high normal and tangential stabili- ty. The tangential accelerations of chain and the normal accelerations of ammunition rack are measured. It can be found that the measured data are consistent with the simulated results.

关 键 词：兵器科学与技术 立式弹药舱 输送链条 弹簧阻尼系统 多体系统动力学 稳定性 

分 类 号：TJ810.2[兵器科学与技术—武器系统与运用工程]