Projects

M.Tech Project

To design a model of an adjustable lifting chassis for a combine harvester using CATIA software.
To simulate the designed adjustable lifting chassis using MATLAB Simulink software for hydraulic circuit design.
To simulate the designed adjustable lifting chassis using ADAMS software for determining the chassis attitude parameters (ground clearance and lateral inclination).
To analyse the designed adjustable lifting chassis for its structural stability using ANSYS software.

An adjustable chassis was designed using CATIA software and simulated for a track type combine harvester of 60 hp. The chassis attitude parameters (height adjustment and transverse tilt) were analysed and compared using mathematical models and ADAMS Software.
The height adjustment range and transverse tilt adjustment range obtained by formulating mathematical model was 0 to 245 mm and 0 to ±15.2° respectively for piston extension length of 0 to 100 mm.
The maximum height adjustment and transverse tilt adjustment for the developed virtual model analysed by ADAMS simulation software was found to be 243 mm and 15.2° respectively for the specific driving parameters and simulation time of 40 s.
A hydraulic circuit was designed and simulated for adjustable chassis by MATLAB Simulink Software for analysis of hydraulic components. The maximum pressure exerted by fixed displacement pump was 100 bar for a simulation run time of 40 s and maximum force exerted by the hydraulic cylinders were 43.2 kN for a total load of 7000 kgf.
The structural stability of the designed adjustable chassis was determined by ANSYS Software. The designed lifting chassis had maximum displacement value of 2.7 mm and maximum stress value of 394 MPa.

Hence the designed lifting chassis was approved safe with a factor of safety 1.94 as it passed the requisite design criteria.

To collect data about groundnut crops and their labour demand for various operations and compare it with harvesting.
To test the working performance of the groundnut digger shaker in terms of field, operating, and performance parameters as per standard procedure given by ISI test codes.
To statistically analyse effects of the crop, field, and machine parameters on performance parameters of the groundnut digger shaker.

Groundnut was found to be one of the most important crops in the country due to its economic importance and biological value. The saving in man-hours requirement and the cost of harvesting was quite substantial and justified the use of machines.
The average field capacity of machines was 0.40 ha/h with average field efficiency of 81%, which is reasonably satisfactory with an impressive digging efficiency of 90 % resulting in minimum pod losses. The average draft requirement of machines ranged from 691-782 kg, thus, which is well within 35 hp tractor (low hp tractor).
Higher effective field capacity was found to be obtained by higher crop maturity levels, larger field sizes, and higher forward speeds. The digging efficiency was increased when there was a lower crop maturity level, increased field size, and decreased forward speed.

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