Abstract
The agricultural tractor's tire tread has big cross-stitch lugs, and the vibration caused by the interaction between the tire lugs and the road surface occurs at on-road running. Therefore, in order to investigate possible ways for the reduction of vibration excited by tire lugs in constant speed running, we built a 12-DOF agricultural tractor calculation model with a 6-DOF rigid model cabin and chassis. Moreover, instead of the usual four-point supporting system of a cabin, we adopted three-point supporting system (i.e., 1 point in the front and 2 points in the rear). This three-point supporting system enables to reduce cabin vibration caused by tire lugs at fast running because of the decrease in the natural frequency of the cabin isolation system.
