论文部分内容阅读
履带车辆传动系统在设计时大多采用静强度设计理论,无法准确反映其在不同任务剖面下的动态特性,且由于传统测试手段及试验方法的限制,导致获得传动系统各零部件所承受的动载荷具有很大困难,使履带车辆传动系统的实际使用寿命与设计寿命有很大差距,严重影响了履带车辆使用时的可靠性。建立了基于ATV的行驶仿真试验平台,并基于行驶仿真试验建立了履带车辆传动系统仿真分析流程图,建立了履带车辆传动系统虚拟样机并对其进行模型验证,以保证仿真结果的准确性。在行驶仿真试验基础上对履带车辆传动系统虚拟样机进行动力学仿真分析,获得了某任务剖面下履带车辆传动系统输出端所承受动载荷,并以履带车辆传动系统行星架为例对其进行动力学、有限元及寿命预测分析,为下一步对传动系统零部件进行疲劳寿命预测及动态优化设计提供重要依据。
Most of the tracked vehicle transmission system adopts the static strength design theory in design, which can not accurately reflect its dynamic characteristics under different mission profiles. Due to the limitation of the traditional test methods and test methods, the dynamic load of each component of the transmission system Has great difficulties, so that the actual service life of the tracked vehicle transmission system has a long way to go in the design life, seriously affecting the reliability of the tracked vehicle. A simulation test platform based on ATV is established. Based on the driving simulation test, a simulation analysis flowchart of the tracked vehicle transmission system is established. The virtual prototype of the tracked vehicle transmission system is established and the model is validated to ensure the accuracy of the simulation results. Based on the driving simulation test, the dynamic simulation of the virtual prototype of the tracked vehicle transmission system is obtained, and the dynamic load of the output of the tracked vehicle transmission system under a certain mission section is obtained. Taking the planetary carrier of the tracked vehicle transmission system as an example, Learning, finite element and life prediction analysis provide the important basis for the next step to predict the fatigue life and dynamic optimization design of transmission system components.