Force prediction equation using distorted model as an analog device |
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Authors: | D S Wadhwa |
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Institution: | 1. Assistant Professor, Department of Farm Power and Machinery, Punjab Agricultural University, Ludhiana, India |
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Abstract: | The force versus speed response of a distorted model of a soil-engaging tool operating in a soil and at a depth where the performance evaluation of the prototype is required to be determined, is used to compute analog values. A prediction equation relating draft force with tool width, depth of cut, soil specific weight, tool velocity and analog values has been developed. A comparison between the forces predicted by the equation and that measured on flat rectangular blades and angled tools operating at a speed of 2–8.5 km/hr is presented. The closeness in prediction accuracies points that the distorted model itself can be used as a fairly good analog device. |
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