| Author | Hendra Yusuf |
| Call Number | AIT Thesis no.AE-99-07 |
| Note | A thesis submitted in partial fulfillment of the requirements for the degree of Master of Engineering |
| Publisher | Asian Institute of Technology |
| Abstract | The problem of the thrust exerted by a tracked vehicle and load transfer from the track system to the ground is highly dependent upon the behavior of soil under the action of each track-shoe. It is obvious that track-shoe morphology (i.e. shape and size) plays a critical role in the development of thrust and to maintain bearing/flotation through the active surface of the track and penetrating into the soil to its optimum depth. This study was conducted to evaluate the thrust and the bearing capability induced by single track shoes. In all, five types of track shoes were tested in wet clay soil. Different normal loads were used for testing. The soil deformation due to shoe sinkage and forward movement was carefully observed and photographed. All the tests were conducted at 4 mm/s forward speed. On the basis of the experimental work, the· Finite Element Method was used to simulate the track soil interaction. These experimental results may be further used to study the soil behavior under continuous track. The study searched the role of track produced traction and sinkage in transferring vertical load to soil. The force-displacement curves were found to be hyperbolic and only in a few cases a parabolic relationship between sinkage and displacement was obtained. It was observed that the soil deformation pattern depended on the track shape. Model B (conventional track shoe) indicated that the grouser height gave higher thrust and can keep float during moving by developed surcharge in the upper layer beneath the track. Model C (triangle shaped shoe) was much inferior in flotation and turned out to produce excessive sinkage at high loads. However Model E (rectangular wooden shoe) gave better tractive performance and it's sinkage was less and expanded more slowly to be the most promising potential improvement. |
| Year | 1999 |
| 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, V.M. |
| Examination Committee(s) | Singh, Gajendra ;Lin, Der Guey ;Chaiyaphol Kaewprakaisaengkul |
| Scholarship Donor(s) | Asian Institute of Technology Partial Scholarship |
| Degree | Thesis (M.Eng.) - Asian Institute of Technology, 1999 |