Modeling tractive performance of pneumatic tyres under wet land conditions | |
| Author | Dwarkanath, Gholkar Madhav |
| Call Number | AIT Thesis no.AE-08-05 |
| Subject(s) | Farm tractors Tires--Performance |
| Note | A thesis submitted in partial fulfillment of the requirements for the degree of Master of Engineering in Agricultural Systems and Engineering, School of Environment, Resources and Development |
| Publisher | Asian Institute of Technology |
| Series Statement | Thesis ; no. AE-08-05 |
| Abstract | Agricultural tractor is one of the major components of mechanized farming which consumes large amount of energy. Thus, prediction of tractive performance to optimize tractor parameters based on local operating c ondition is essential for efficient use of available tractor power. Several models we re presented for the tractor performance prediction but mostly relevant for dry land agriculture. In this study the traction tests were performed with a two wheel drive tractor to model the prediction of tractive performance of tractor under wet land conditions. Some popular models for the prediction of net traction were tested with observed wet land tr action data but, none of the model prediction was found to match with wet land traction observations. Hence, a new model for the prediction of net coefficient of traction was developed for wet land agriculture and was found to be acceptable through statistical norms . Also, effect of axle loading and tyre inflation pressure on drawbar power was evaluated. It was found that drawbar power and thus net traction increased as axle load was in creased. Effect of tyre inflation pressure on drawbar power was not significant except at higher ballasting of 2.2 kN. However, power at 130 kPa tyre pressure was found to be higher than 100 kPa and 70 kPa. Higher drawbar power was observed when tractor was operated in soil with moisture range of plastic limit to sticky limit. Drawbar power reduced as moisture content was increased to flooded condition. Vehicle slip and soil surface deterioration due to single passing was increased as soil moisture increased. Blocking of wheel lugs was found to be more prominent when operated in the soil near to sticky limit. |
| Year | 2008 |
| Corresponding Series Added Entry | Asian Institute of Technology. Thesis ; no. AE-08-05 |
| Type | Thesis |
| School | School of Environment, Resources, and Development (SERD) |
| 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) | Salokhe, Vilas M. |
| Examination Committee(s) | Jayasuriya, H. P. W.;Niyamapa, Tanya;Soni, Peeyush |
| Scholarship Donor(s) | Thailand (HM King) |
| Degree | Thesis (M.Eng.) - Asian Institute of Technology, 2008 |