| Author | Thakur, Raj Kumar |
| Call Number | AIT Thesis no. AE-90-09 |
| Subject(s) | Soil dynamics
|
| Note | A thesis submitted in partial fulfilment of the requirements for the degree of Master of Engineering, School of Environment, Resources and Development |
| Publisher | Asian Institute of Technology |
| Abstract | The effect of rake angle, width and depth of operation of
tines of simple geometry on draft and vertical force in silty
clay loam soil were studied. The experiments we re conducted by
moving tines of aspect ratio 1, 2 and 3 at two depths of
operation, 10 cm and 15 cm and three rake angles namely, 60°, 75°
and 90°, at a speed of 1 km/hr under t he controlled laboratory
soil bin condition at a moisture l eve l of 14% db.
Both draft and vertical force were cyclic in phase with each
other for every combination of rake ang l e, width and depth for
a 11 the tines. The peak draft and peak upwards vertica1 force
were found to increase with the increase in rake ang l e and aspect
ratio; the rate of increase being more at 15 cm depth than at 10
cm depth. The increase in wave length and the difference in peak
and trough value of draft with the increase in rake angle and
aspect ratio, each was found to have similar trends. At higher
rake angles, the rate of increase in both wave length and
difference in peak and trough value was greater at higher depth
than at lower depth, for t he same value of aspect ratio , whereas,
at higher aspect ratio value, it was greater at lower depth than
that at higher depth for t he same value of rake angle . |
| Year | 1990 |
| 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) | Singh, Gajendra ;Gee-Clough, D. |
| Examination Committee(s) | Gupta, Chandra P. ;Salokhe, Vilas M |
| Scholarship Donor(s) | DAAD (Federal Republic of Germany) |
| Degree | Thesis (M.Eng.) - Asian Institute of Technology, 1990 |