论文部分内容阅读
为了准确描述履带车辆的振动特性,通过对履带车辆行动系统拓扑结构的分析,建立了柔性履带模型和刚性履带模型,采用特征值方法计算了履带环的固有振动特性,并利用功率谱方法对仿真结果进行了对比,分析了履带对车辆振动特性的影响,最后通过实车试验对所建模型的准确性进行了验证。结果表明:履带对车辆振动的影响主要包括履带环的低阶固有振动和与履带板节距相关的高频振动;2类模型的计算误差在2%~27%之间,说明履带对车辆系统振动的影响范围较大,根据不同工况可选择合适的模型进行计算。
In order to accurately describe the vibration characteristics of tracked vehicles, a flexible track model and a rigid track model are established through the analysis of the topological structure of the tracked vehicle’s motion system. The eigenvalue method is used to calculate the inherent vibration characteristics of tracked rings. The results are compared and the influence of crawler on the vehicle vibration characteristics is analyzed. Finally, the accuracy of the model is validated by real vehicle test. The results show that the influence of track on vehicle vibration mainly includes low-order natural vibration of track ring and high-frequency vibration related to track pitch. The calculation error of 2 types of models is between 2% and 27% The influence range of vibration is larger, and the appropriate model can be selected according to different working conditions.