Browsing by Author "Kiriama,L.L."
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Item The Mechanics of a disc plough(Sokoine University of Agriculture, 1985) Kiriama,L.L.ABSTRACT An angle attachment was designed to enable disc axis orientation with the soil bin facility developed at the College.A force prediction model by Godwin et al at Silsoe College was used to predict the magnitude of forces to be expected.- The effect of change in axis angle on draught,- vertical and side forces was studied and the results compared with the prediction. It was found that there.was a significant effect in changing the disc axis angle, The draught and side forces were found to be less at 15° than at 0^ 0° axis angle, angle. The optimum axis angle at 25° sweep was found to be about 15 o ’where the maximum downward vertical force occured. Since the experimental and predicted results did not compare well, an exploration of the force prediction model was suggested.Whilst for global prediction the model seemed alright,it was difficult to make it work for all combinations. Although the model worked well with an 0° axis angle and 90° sweep angle, the edge effect and inclination for the other combinations needed greater definition.