全地形铰接式履带车辆俯仰运动性能

发布时间：2018-06-25 18:34

本文选题：机械工程 + 全地形铰接式履带车辆　；参考：《吉林大学学报(工学版)》2017年03期

【摘要】：为了准确求解全地形铰接式履带车辆俯仰运动过程中的运动学和力学相关参数,在深入研究全地形铰接式履带车辆俯仰运动机理的基础上,采用数学建模的方法建立了全地形铰接式履带车辆俯仰运动过程中的运动学和力学模型,理论上推导出用于求解前后车体最大俯仰角度、俯仰高度、重心运动轨迹半径以及车辆顺利完成俯仰运动时铰接机构所需要提供的最小拉力等的理论计算公式,并以某一具体铰接式履带车辆为例进行了数值求解。最后,采用虚拟样机技术对所建立的理论模型进行了验证,结果表明:理论计算值与虚拟样机仿真得到的结果较为接近,其相对误差均没有超过15%,满足工程实践的要求,进而验证了理论模型的正确性。该研究成果可为全地形铰接式履带车辆的结构设计和优化以及俯仰液压缸的选型等问题提供理论依据。
[Abstract]:In order to accurately solve the kinematics and mechanics related parameters of all terrain articulated crawler vehicle pitching motion, the mechanism of pitch motion of all terrain articulated crawler vehicle is studied in depth. The kinematics and mechanics model of all terrain articulated crawler vehicle is established by using mathematical modeling method, and the maximum pitch angle and pitch height of front and rear car body are derived theoretically. The theoretical formulas for calculating the trajectory radius of the gravity center and the minimum tension required by the hinged mechanism when the vehicle successfully completes the pitching motion are calculated. A concrete articulated tracked vehicle is taken as an example to be solved numerically. Finally, the theoretical model is verified by using virtual prototyping technology. The results show that the theoretical calculation value is close to the result of virtual prototype simulation, and the relative error is not more than 15%, which meets the requirements of engineering practice. Furthermore, the correctness of the theoretical model is verified. The research results can provide a theoretical basis for the structural design and optimization of all terrain articulated tracked vehicles and the selection of pitching hydraulic cylinders.
【作者单位】：吉林大学机械科学与工程学院;
【基金】：国家自然科学基金项目(51375202) 国家科技计划和重大专项基金项目(2009DFR80010)
【分类号】：TH22

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