STUDY ON THE INTERACTION BETWEEN AN AGRICULTURAL TRACTOR AND FIELD TERRAIN PROFILES
To study the interaction between the tractor and the field terrain on which the tractor operates, the characteristics of tractor vibrations excited by the measured profiles were analyzed by simulations and experiments. The results show that the theoretically calculated values of the tractor vibrations excited by the field road profiles, including the natural frequencies of the tractor’s center of gravity, acceleration RMS values of the tractor axles, and the wheel dynamic loads, were close to the measured values, with an error range of 3.5% to 10.9%. Considering the filtering effect of large tractor tires on the measured road profiles, these errors are within an acceptable range. The results confirm the validity of the methodology presented in this paper for investigating the tractor vibrations caused by measured profiles as excitations.
Abstract in Chinese