装甲车辆发动机载荷谱仿真与试验研究

摘要

载荷谱是装甲车辆发动机结构寿命研究的根本依据.为深入研究发动机载荷谱,以某型装甲车辆为研究对象,基于发动机工作过程数值计算方法、多体动力学理论和联合仿真技术,建立了包括动力装置、传动装置和行动装置的整车动力性能仿真模型.模拟了车辆行驶过程中驾驶员操作和路面状况对发动机动态工况的影响,并自主设计了挡位、车速传感器,通过实车试验对模型进行了验证.统计分析了装甲车辆发动机典型任务剖面下的载荷参数时间历程,得到了发动机及其零部件载荷谱,为基于载荷谱的装甲车辆发动机可靠性设计和试验提供了依据.%Loading spectrum is the basis of the structure and life research of the armored vehicle engine. The armored vehicle is taken as the subject, based on the working process simulation method of diesel engine, multibody system dynamic theory and co-simulation technology, the power performance simulation model was built including the power unit, driven unit and running unit. The model simulated the influence of the operation of the driver and the transient operation condition of the engine, and designed the gear and vehicle speed sensor, and the model is validated by the experiment. Analyzed the load parameters of the engine, and established the loading spectrum of the engine and its components assembly, the method lays the foundation of the dependability design and experiment for the armored vehicle engine based on loading spectrum.