ABSTRACT The various techniques for evaluating the wheel numeric and vehicle performance have been studied. The wheel numeric depends on many parameters; vehicle weight, tire geometry, and soil strength in terms of cone index. The tire geometry includes tire width, tire diameter, section height and tire deformation. The tire deflection is very difficult to accurately measure. So the main purpose of this paper is to develop a new wheel numeric formula with a new parameter depending on the inflation pressure inside the tire instead of the tire deflection. A theoretical study to investigate the effect of soil cone index, tire geometry and vehicle weight on different wheel numeric has been carried out and so their effects on the vehicle performance have been carried out. The performance of off road vehicle on soft soil in terms of rolling resistance, drawbar pull and tractive efficiency has been studied and investigated using variety of methods. These include; theoretical, semi-empirical and empirical methods based on wheel mobility number. The results showed that the new numeric formula gives a good correlation with published results at different soil cone index, vehicle weight, tire width, tire diameter and tire inflation pressure. Also the predicted performance has a good agreement with published experimental results at same conditions.
Hendy, A., Hegazy, S., Abdel-Bary, A., Emam, M., & Hendawy, Y. (2012). PREDICTION OF WHEEL NUMERIC FOR SANDY-TIRE. The International Conference on Applied Mechanics and Mechanical Engineering, 15(15th International Conference on Applied Mechanics and Mechanical Engineering.), 1-19. doi: 10.21608/amme.2012.35960
MLA
A. Hendy; S. Hegazy; A. Abdel-Bary; M. A. Emam; Y. Hendawy. "PREDICTION OF WHEEL NUMERIC FOR SANDY-TIRE". The International Conference on Applied Mechanics and Mechanical Engineering, 15, 15th International Conference on Applied Mechanics and Mechanical Engineering., 2012, 1-19. doi: 10.21608/amme.2012.35960
HARVARD
Hendy, A., Hegazy, S., Abdel-Bary, A., Emam, M., Hendawy, Y. (2012). 'PREDICTION OF WHEEL NUMERIC FOR SANDY-TIRE', The International Conference on Applied Mechanics and Mechanical Engineering, 15(15th International Conference on Applied Mechanics and Mechanical Engineering.), pp. 1-19. doi: 10.21608/amme.2012.35960
VANCOUVER
Hendy, A., Hegazy, S., Abdel-Bary, A., Emam, M., Hendawy, Y. PREDICTION OF WHEEL NUMERIC FOR SANDY-TIRE. The International Conference on Applied Mechanics and Mechanical Engineering, 2012; 15(15th International Conference on Applied Mechanics and Mechanical Engineering.): 1-19. doi: 10.21608/amme.2012.35960
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