Abstract: 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.

Key words: Mining dump truck, Ride comfort, Rigid-elastic coupling dynamics mode, Virtual test