Abstract
When the agricultural machinery runs on-road the vibration and the noise caused by the interaction between the tire lugs and the road surface are inevitable. In this study, the test equipment is manufactured to measure the motion of the rolling agricultual tire with ground contact and lug excitation force are derived. Next, natural frequencies and natural modes are obtained by experimenatl modal analysis. By comparing the characteristic for rotationl speed of lug excitation force with obtained natural frequencies of the tire, the influence of vibration characteristics of the tire on lug excitation force are investigated.
