装甲车辆用立式弹药舱的设计与动力学分析
发布时间：2019-05-06 09:00
【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。
[Abstract]:In order to analyze the dynamic characteristics of the conveying chain and the stability of the ammunition, the double row rollers on both sides of the chain and the frame are simplified as spring damping elements. The theory of multi-body system dynamics and kinematic elastic dynamics is adopted. The complete dynamic model of the conveying chain and the stability model of the ammunition are established. With the help of Matlab software, the whole dynamic model of conveying chain is simulated, and the stability model of ammunition is solved. The results of numerical simulation show that the velocity and acceleration of the conveying chain fluctuate in narrow range under different driving power. The shape characteristic of trajectory line determines the dynamic response and abrupt characteristic of ammunition centrifugal force, and the abrupt characteristic of centrifugal force has a great influence on the stability of the normal direction of ammunition motion. The stability of ammunition in the tangent direction of motion is mainly influenced by its inertia and the dynamic parameters of the conveying chain. According to the swinging displacement response of the upper part of the ammunition, it can be seen that the ammunition has good dynamic stability in the normal direction and tangent direction. The tangent acceleration of the conveying chain and the normal acceleration of the projectile are obtained by using the experimental measurement method. The measured data are in good agreement with the simulation results.
【作者单位】： 北京工业大学机械工程与应用电子技术学院;北京航空航天大学机械工程及自动化学院;
【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)
【分类号】：TJ810.37
，
本文编号：2470051
[Abstract]:In order to analyze the dynamic characteristics of the conveying chain and the stability of the ammunition, the double row rollers on both sides of the chain and the frame are simplified as spring damping elements. The theory of multi-body system dynamics and kinematic elastic dynamics is adopted. The complete dynamic model of the conveying chain and the stability model of the ammunition are established. With the help of Matlab software, the whole dynamic model of conveying chain is simulated, and the stability model of ammunition is solved. The results of numerical simulation show that the velocity and acceleration of the conveying chain fluctuate in narrow range under different driving power. The shape characteristic of trajectory line determines the dynamic response and abrupt characteristic of ammunition centrifugal force, and the abrupt characteristic of centrifugal force has a great influence on the stability of the normal direction of ammunition motion. The stability of ammunition in the tangent direction of motion is mainly influenced by its inertia and the dynamic parameters of the conveying chain. According to the swinging displacement response of the upper part of the ammunition, it can be seen that the ammunition has good dynamic stability in the normal direction and tangent direction. The tangent acceleration of the conveying chain and the normal acceleration of the projectile are obtained by using the experimental measurement method. The measured data are in good agreement with the simulation results.
【作者单位】： 北京工业大学机械工程与应用电子技术学院;北京航空航天大学机械工程及自动化学院;
【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)
【分类号】：TJ810.37
，
本文编号：2470051
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