Steering forces on undriven, angled cage wheels and rubber tyres | |
| Author | Agarwalla, Jugal K. |
| Call Number | AIT Diss. no.AE-88-02 |
| Subject(s) | Tractors--Wheels Tires, Rubber--Traction |
| Note | A dissertation submitted in partial fulfillment of the requirements for the degree of Doctor of Engineering, School of Environment, Resources and Development |
| Publisher | Asian Institute of Technology |
| Series Statement | Dissertation ; no. AE-88-02 |
| Abstract | The steering performance of different types of wheels was studied. Rubber tyres with different tread patterns and a cage wheel were studied under dry land as wet as wet land conditions. The camber angLe was zero degree in 311 the experiments. The coefficient of side force increased with the increase of stip angle and tended to approach a maximum. This trend was the same for a11 types of wheels under dry land as we11 as wet land conditions. The coefficient of rolling resistance decreased with the increase of slip angle. A cage wheel produced the highest side force (3 times that of rubber tyres in wet ;and conditions for a11 siip ang1es. For cage wheels operating in wet land conditions, the coefficient of side force increased with increase in Tug orientation angie, wheel width and number of lugs (upto 16 for a wheel diameter of 0.90 m and wheel width of 0.38 m). The effect of wheel diameter on the coefficient of side force was non—significant within the range used in this study. However, it decreased with increase of Tug angle. This decrease was more pronounced in the case of symmetrica] lugs as compared to single pirate tugs. The effects of number of Tugs, Tug orientation ang1e and Tug angle on coefficient of roTTing resistance were non— significant. The coefficient of roTTing resistance decreased with increase in diameter and wheel width. The coefficients of side force and r011ing resistance increased linearly with increase in travel Speed in the range of 1 to 3 km/hr for a whee1 diameter of 0.90 m and width of 0.38 m when operating in puddied clay 5011. Prediction equations for the coefficients of side force and the roTTing resistance of steered cage wheeTs operating in wet land conditions, were developed using dimensional anaLysis techniques. These equations are applicable upto a travel speed of 1 km/hr for typical variations in the cage wheel parameters. |
| Year | 1988 |
| Corresponding Series Added Entry | Asian Institute of Technology. Dissertation ; no. AE-88-02 |
| Type | Dissertation |
| School | School of Environment, Resources, and Development |
| Department | Department of Food, Agriculture and Natural Resources (Former title: Department of Food Agriculture, and BioResources (DFAB)) |
| Academic Program/FoS | Agricultural and Food Engineering (AE) |
| Chairperson(s) | Gee-Clough, D.;Singh, G.; |
| Examination Committee(s) | Gupta, C.P.;Balasubraman, A. S.; |
| Degree | Thesis (Ph.D.) - Asian Institute of Technology, 1988 |