Abstract
In general, agricultural tire has high and large cross-switch lugs to keep moving performance without slip in rice fields. Therefore the vibration and the noise caused by the interaction between the tire lugs and the road surface are inevitable when the agricultural machinery runs on-road. In this study, the test equipment is manufactured to measure the motion of the rolling agricultual tire with ground contact. The test equipment is modeled as mass-damper-spring system and the dynamic characteristics of the tire are identified from the experimentally measured data by using the method of least squares. As a result, the influence of rotational velocity on the dynamic characteristics are investigated.