Abstract
It is well known that the vibration and the noise of agricultural machinery during running on a road is strongly influenced by the lug form. In this paper, natural frequencies and mode shapes of a non-rotating Agricultural Tire are assesed by experimental modal analysis method for two boundary conditions: not in ground contact and in ground contact. These experimental results are compared with the flexible ring model which depicts the tire as a ring supported on an elastic foundation. The parameters of the model are identified from the measured natural frequencies by the optimization method. The influence of boundary conditions on the parameters is investigated. Further, the effects of several factors on the parameters are discussed.
