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A two-tine oscillatory subsoiler was developed at the University of South Australia for fracturing the compacted soil layers between grapevines using small tractors. As the soil forces exerted on the tines were unbalanced, the tillage forces, torque peaks through the power-take-off and the inertia of the tines transferred vibrations to the tractor and its driver. These vibrations currently prevent...
A mathematical model that predicts the draught force acting on a mouldboard plough body is described. An important aspect of the model is that draught force is calculated using the geometric parameters of the plough body components, the ploughing speed and the physical properties of the soil. A spreadsheet has been developed to carry out the complex calculations required to determine the total draught...
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