| Author | Hada, Deepa |
| Call Number | AIT Thesis no.AE-05-02 |
| Subject(s) | Plowing--Simulation methods
|
| Note | A thesis submitted in partial fulfillment of the requirements for the degree of Master of Engineering, School of Environment, Resources and Development |
| Publisher | Asian Institute of Technology |
| Series Statement | Thesis ; no. AE-05-02 |
| Abstract | A simulation model was develpoed using Distinct Element Method (DEM) to study the disc-soil intrections in sandy soil. Experiments were performed in a soil bin for model validation. Visual Basic programme was used for the development of simulation and SQL Server 2000 was used to store bulk data generated by the program. OPENGL language with programming module developed in VC++ was applied to generate 3D images. For the development of simulation model and experiments, two soil types- sandy and loamy with a 25 cm diameter single disc were used both in development of simulation model and its experimental validation. Effects of disc angle (20°, 40° and 60°) and tilt angle (15°, 450 and 75°) on horizontal, vertical and side forces were studied. The disc angles and tilt angles showed significant effects on horizontal, vertical and side forces. For a given disc angle, it was observed that the horizontal force increased with increase in tilt angle; whereas vertical and side forces decreased. The magnitute of forces in loamy soil were higher than sandy soil. Soil failure pattern was progressive and stability of system reached after a distance of 600 mm in loamy soil. Sandy soil obtained stability at early stages of disc movement. The simulated soil cutting process was confirmed by validation and found similar in real-time. A similar failure geometry between soil failure due to disc in simulated condition and experiment was observed. The developed 3D DEM model of soil-disc interaction was found valid for the given conditions. |
| Year | 2005 |
| Corresponding Series Added Entry | Asian Institute of Technology. Thesis ; no. AE-05-02 |
| Type | Thesis |
| School | School of Environment, Resources, and Development (SERD) |
| Department | Other Field of Studies (No Department) |
| Academic Program/FoS | Agricultural and Food Engineering (AE) |
| Chairperson(s) | Salokhe, Vilas M.; |
| Examination Committee(s) | Jayasuriya, H.P.W.;Barry, William; |
| Scholarship Donor(s) | The Government of Netherlands; |
| Degree | Thesis (M.Eng.) - Asian Institute of Technology, 2005 |