矿用自卸汽车平顺性虚拟仿真技术及试验研究

应用UG三维建模软件建立实体模型，在ANSYS中建立车架有限元模型，创建车架弹性体中性文件，把车架弹性体中性文件导入ADAMS。分别建立车架上其他构件、前桥、后桥、横拉杆、A形架的三维几何模型，导入ADAMS中。在ADAMS中建立轮胎模型及前后悬挂模型，在此基础上建立整车刚－弹耦合动力学模型。采用谐波叠加法生成C级路面模型。针对车速为10、20、30和40 km/h 4种车速，在随机路面上进行平顺性试验。利用刚-弹耦合动力学模型，在C级路面上虚拟试验驾驶员座椅前后、左右和垂直3个方向的加速度。虚拟试验与实车试验的结果表明，建立的刚-弹耦合动力学模型具有足够的精确性，这为矿用自卸汽车的设计提供了依据。

Study on the Virtual Simulation of Ride Comfort of Mining Dump Truck

A 3D modeling software-UG was used to establish the physical model of the frame and its finite element model in ANSYS and create and import the frame elstomer neutral file into ADAMS.The 3D geometric models of the components on the frame such as front axle, rear axle, tie-rod and A-frame were also created and imported into ADAMS, where the models for the tires and the front and rear suspensions were also established.Based on this, the rigid-elastic coupling dynamics model of the vehicle was established.Harmonic superposition method was used to generate a C-class road model.The ride comfort at the speed of 10 km/h, 20 km/h, 30 km/h and 40 km/h on a random road was tested.The acceleration in fore-back, right-left and vertical directions of the driver seat on the C-class road was simulated by using the rigid-elastic coupling dynamics model.The comparison between the results of the virtual test and real driving test shows that this rigid-elastic coupling dynamics model has sufficient accuracy to provide a basis for the design of mining dumping truck.