The main objective of this study was to perform model
experimentation for predicting draft and power requirements of
simple tillage tools such as chisel plow. Four tool operating
parameters were chosen to be cases for model experimentation.
These were tool rake angle (ranged from 15 to75), tool depth
(ranged from 100 to 300 mm), tool speed (ranged from 0.89 to
1.92 m/s), and tool width (ranged from 100 to 400 mm).
Experimentation process was carried out using simulation model
modified by Afify et al. (2020) based on Sohne's model, (1956).
Validation results of such model showed an acceptable agreement
between the test data and the model. The model experimentation
was conducted by running a program modified by VB Software
using real data as inputs of soil parameters from Afify (1999) and
Roza (1997). The soil under these studies was clay soil in terms
of soil mechanical analysis. Results of model experimentation
showed the model could be predicting daft and power
requirements by an accuracy exceeds than 90% for the four
examined parameters under this study. |
