Abstract
The developed rotary tillage model designed through DEM (discrete element method) was shown to predict the influence of the rotary blade shape in addition to the rotational speed of the rotary axle and the tillage depth on the rotary axle torque in the previous papers. In this paper, the influence of operating conditions (rotational speed of the drive shaft, traveling speed) on the required power and torque of the rotary tiller was estimated using the rotary tillage model. A comparison between the simulation and the experimental results indicated that the model was able to predict the influence of operating conditions on the required power and torque in rotary tilling. The predictions of the required power and torque using the model were registered within the range of 93% to 126% of the actual values.
