| Some of the mathematical force models employing limit equilibrium analysis are based on the soil-volume tilled to predict the draft requirements of a tillage tool. At the same time, such models require a preliminary assumption of the soil failure pattern ahead of the tool. It is imperative therefore to accurately determine the dimensions of the idealized soil-failure model to ensure accurate prediction of the soil-volume tilled and thus the tillage-tool draft requirements. Among the commonly idealized models, is the model that divides the soil failure ahead of a simple tillage tool into a center wedge and a side circular crescent on each side of the tool. However, the available model for determining the maximum width of the side circular crescent was found... |
