基于ADAMS的轮式拖拉机行驶平顺性初步研究

aking the wheeled tractor Dongfanghong LX854 as the research object, the software of PRO/E was adopted to establish the simplified geometric model of the vehicle and the seat-suspension system. Afterwards, the property files of tires and road excitation were compiled. The virtual prototype of the tractor-seat system was constructed by importing the files into ADAMS. On the base of the virtual prototype, the riding performance of the system subjected to different road excitations was simulated and analyzed at different speeds. The results show that the road roughness and driving speed have a great influence on the riding performance of the system. When the tractor is riding on the smooth road, the subjective vibration feelings of drivers are lower than that on the rough road at the same speed. Vertical vibration is mainly affected by the speed and it increases with the speed. When adding the seat-suspension system, the vertical vibration amplitude significantly descends and the driver is out of the sensitive frequency area of body organs and spine system, but the vertical displacement of the seat increases.