| Author | Mathur, Ravi |
| Call Number | AIT Thesis no. AE-82-07 |
| Subject(s) | Tractors--Dynamics
|
| Note | A thesis submitted in partial fulfilment of the requirement for the degree of Master of Engineering, School of Environment, Resources and Development |
| Publisher | Asian Institute of Technology |
| Abstract | In order to safeguard against the fatigue failure of the tractor frame from unforeseen circumstances, the precisely relevant factors effecting its
design and fabrication have not been duly considered by the manufacturers. Two approaches were made to study the static and dynamic characteristics of
the whole housing of the tractor.
The static test included finding the behaviour of maximum and minimum principal stresses and their directions on the interesting locations of the frame under random application of the load for three methods of loading, viz ; rear, l eft and right side rear axle . Thus, the maximum stress can be used in the appropriate selection of the factor of safety by the designer to reduce
the time and wastage of material. The dynamic test included analyzing the actual stress wave recorded in the field under various field conditions. Its amplitude , time and frequency
domain were studied using probability density function, autocorrelation and power spectra l density respectively. Frequency distribution was used to evaluate the gradient of the Weibull ' s distribution which was used for the prediction of fatigue strength. To increase the degree of fatigue one should select smaller value of a
depending on the fatigue limit of the material and the scale parameter, for a particular gradient and then this value can thus be used for redesigning
the process. These proposed procedures will be of much help to the designer for optimum designing of the frame in the near future. |
| Year | 1983 |
| 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) | Koike, Masayuki
|
| Examination Committee(s) | Singh, Gajendra ; Gee-Clough, D.
|
| Scholarship Donor(s) | The Keidanren (Federation of Economic Organization), Japan |
| Degree | Thesis (M.Eng.) - Asian Institute of Technology, 1982 |