The measurement of forces under multiple cage wheel lugs | |
| Author | Harjono |
| Call Number | AIT Thesis no. AE-89-13 |
| Subject(s) | Wheels Trafficability |
| 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 |
| Abstract | Experiments were conducted in a laboratory soil bin having Bangkok c l ay soil to measure the forces in quasistatic condition under model multiple cage wheel lugs. The "L" shaped force transducers were used to measure the soil reactions on the lugs . The force measurement o n both lugs were done at ~0%, 50% and in flooded soil condition. The lug sinkage and s lip were varied to ~ cm, 6 cm a nd 8 cm, and 35% , 50% a nd 67% respectively. The lug spacing was varied to 30 and 36 degrees. The measured normal a nd tangential forces were converted to lug pull and lift forces. It was observed that the normal and tangential as well as pull and lift forces acting on the first lug were higher than the forces o n the second lug. The increase in t h e soil moisture content caused decrease in the forces on both lugs. Increase in the lug sinkage caused increase in lug forces for both the lugs. It was observed t hat lug slip did not have much effect on the force under the first lug , but it affected the forces under the second lug significantly. The lug spacing showed significant effect on the lug forces of the second lug. Experiments conducted at 50% moisture content showed that for no lug interference the spacing should be as high as 45 to 90 degrees at 35, 50 and 67% s lips. The comparison of forces predicted by the passive earth pressure theory and measured forces showed that the theory overestimated the forces on the first as well as on the second lug. The overestimation was higher for t h e second lug . |
| Year | 1989 |
| Type | Thesis |
| 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) | Salokhe, Vilas M. ; |
| Examination Committee(s) | Singh, Gajendra ;Gee-Clough, D. ;Gupta, Chandra P. ; |
| Scholarship Donor(s) | The Royal Netherlands Government ; |
| Degree | Thesis (M.Eng.) - Asian Institute of Technology, 1989 |