LUO Hong, LIANG Bo, WU Zhi-hua, SHI Shi-rong. Study and Application of a 4-DOF 1/2 Vehicle-Road Coupling Dynamic Model[J]. Applied Mathematics and Mechanics, 2014, 35(7): 737-749. doi: 10.3879/j.issn.1000-0887.2014.07.003
Citation: LUO Hong, LIANG Bo, WU Zhi-hua, SHI Shi-rong. Study and Application of a 4-DOF 1/2 Vehicle-Road Coupling Dynamic Model[J]. Applied Mathematics and Mechanics, 2014, 35(7): 737-749. doi: 10.3879/j.issn.1000-0887.2014.07.003

Study and Application of a 4-DOF 1/2 Vehicle-Road Coupling Dynamic Model

doi: 10.3879/j.issn.1000-0887.2014.07.003
  • Received Date: 2014-04-22
  • Rev Recd Date: 2014-05-20
  • Publish Date: 2014-07-15
  • In the case of a vehicle running on a road, coupling vibration of the vehicle-road system will be induced because of the road unevenness. To simplify the analysis, the vehicle-road system was first divided into a vehicle subsystem above and a road subsystem below, then the 2 subsystems coupled with each other to form a complete system. The vehicle-road dynamic model consisted of a 4-DOF 1/2 vehicle model and an elastic multi-layer finite element road model, and they coupled through the displacement compatibility between the tires and the pavement. The dynamic equilibrium equations for the system were formulated and the decoupling method for the equations was discussed. Several theoretical indices reflecting the road design parameters and the vehicle operation quality were proposed, which provided theoretical basis and solving rationale for the systematic study of relationship between the vehicle operation quality and road design parameters. Furthermore, numerical results of the examples give comparative evaluation of the traveling quality indices of the 2 typical pavement structures of asphalt concrete and cement concrete, making a useful reference for the design and analysis of different pavement structures.
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