Two-Dimensional Analysis of Soil Cutting as Affected by Bulldozing Blade Rake Angle and Soil Physical Properties: Computer Modeling

Soil texture, bulk density, cohesion, soil/steel adhesion, internal angle of friction, and external angle of friction were determined for three different locations. Soil parameters and bulldozing blade with 2.2 m width, 0.3 operating depth, 2.5 km/h forward speed and rake angle values of 300, 350, 400, 450, 500, 550, 600, 650, and 700 were used as inputs for program developed in C++ language to predict the effect of blade rake angle and soil physical properties on soil angle of failure plane, soil pressure coefficients, resistance force, and power. It was found that as the rake angle, soil bulk density, soil cohesion, soil/steel adhesion, and external angle of friction increased, the soil angle of failure plane decreased, the soil passive pressure coefficient was fluctuated, while soil cohesion pressure coefficient, soil adhesion pressure coefficient, resistance force, and power requirement increased.