琉球大学農学部生物生産学科・生産システム工学講座
Laboratory of Bioproduction Systems Engineering, Department of Biological Production, Faculty of Agriculture, University of the Ryukyus
琉球大学農学部生物生産学科・生産システム工学講座
Laboratory of Bioproduction Systems Engineering, Department of Biological Production, Faculty of Agriculture, University of the Ryukyus
琉球大学農学部生物生産学科・生産システム工学講座
Laboratory of Bioproduction Systems Engineering, Department of Biological Production, Faculty of Agriculture, University of the Ryukyus
In order to realize an accurate measurement of mechanical quantities related to the traveling performances of a wheel and to analyze mutual relations of those characteristics, a series of traveling experiments were carried out by using a rubber coating wheel and a soil bin test apparatus with shallow soil layer. It showed that the results would enable us to construct a database for verifying the applicability of the numerical analysis such as Finite Element Method. The results were compared with those of a steel wheel to discuss the influence of frictional property to the traveling performances. The maximum and average tractive forces could be expressed by a simple equation as a function of slip. The rubber wheel setteled more than the steel one when these were rotated, although the latter did more than the former in the state without rotation. Settlement of the rotated wheel had a linear relation with respect to the slip. There were similar trends in the relationship between slip and settlement and in the one between slip and tractive force. Traveling performances such as a tractive force or a distribution pattern of ground contact pressures were affected by the settlement characteristics of a wheel.