EXPERIMENTAL MODEL FOR PREDICTING DRAFT AND POWER REQUIREMENTS OF SIMPLE TILLAGE TOOLS

Abstract

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.