The course provides some elements of general physics (mechanics, thermology, hydraulics) and the main elements of agricultural mechanics, focused on the management of field operations and the treatment of some products, as well as the management of wildlife resources. The main criteria of agricultural mechanization, the tractor and the main operating machines, the monitoring and control systems of the fauna are defined and described.
D. Halliday, R. Resnick, J. Walker, Fondamenti di fisica, Ed. CEA, ISBN 8808182290.
M. Lazzari, F. Mazzetto, Prontuario di Meccanica Agraria e Meccanizzazione, Ed. REDA, ISBN 8883610776.
M. Fiala, Esercizi di Meccanica Agraria, Ed. CUSL, ISBN 8881322498.
L. Bodria, G. Pellizzi, P. Piccarolo, Meccanica e Meccanizzazione Agricola, Ed. EDAGRICOLE, ISBN(13) 9788850654130.
D. Misturini, Precision Farming, Ed. EDAGRICOLE, ISBN(13) 9788850655878.
Learning Objectives
The course aims to train the wildlife technician in the context of agricultural mechanics applied to the management of wildlife resources. The first part of the course is dedicated to learning some fundamentals of physics useful not only for understanding the subsequent concepts of mechanics and mechanization, but also for the basic training of the technician, helping him to solve problems of medium complexity. The knowledge of the construction elements of the agricultural tractor and of the main operating machines will allow him to extricate himself in the machine-recognition. At the same time, the knowledge of the operating elements, of the criteria for choosing and also economic management of the machines, will make wildlife technician able to choose and manage the level and mechanization of the different realities that he will encounter in his working career.
Prerequisites
Mathematics
Teaching Methods
Presence or distance teaching based on digital presentations; exercises in the form of exercises carried out together with students; seminars; webinar.
Further information
Type of Assessment
Written and Oral Exam. To access the oral exam, students must reach the minimum score of 18/30 in the written test.
Course program
PART ONE - ELEMENTS OF PHYSICS
1. Measurement of physical quantities and units of measurement; vector and scalar quantities
2. Position, displacement, speed, acceleration
3. Vectors (definition and examples, vector calculation)
4. Force and motion (Newton's First, Second and Third Law, gravitational force, normal force, tension, friction, uniformly accelerated rectilinear motion, motion equations)
5. Work and kinetic energy (kinetic work-energy theorem, work performed by the gravitational force, power)
6. Uniform circular motion (centripetal force, angular position, angular displacement, angular velocity and acceleration, rotation with constant angular acceleration, linear and angular variables, rotational kinetic energy, twisting moment, second newton's law for rotational motion, work and energy rotational kinetics)
7. Definition of center of mass, rolling, rolling and kinetic energy, equilibrium (linear and angular moments, center of gravity)
8. Fluids (volumic mass, pressure, Pascal theorem, Archimedes principle, flotation and apparent weight), fluids in motion (the ideal fluid, continuity equation)
9. Thermodynamics (temperature, thermal expansion, heat, heat capacity, specific heat, latent heat, First principle of thermodynamics, heat transmission)
PART TWO - THE AGRICULTURAL TRACTOR, NOTES OF ENERGETICS
1. Tractor structure (wheelbase, track and other geometric features; 2rm, 4rm, articulated chassis, tracks, rotary cultivators, tool carriers; supporting structure, suspension, safety cabin)
2. Mode of attachment of tools (Hydraulic lift, hook and tow bar; PTO and types and methods of use, hydraulic outlets)
3. Propulsion (roadway variation; drag resistance and adhesion coefficient)
4. Efficiencies of use; overall performance/efficiency in relation to the type of use of the power; power to the crankshaft with a given power requirement by the attached machinery; ground pressure and compaction problem
5. Elements of energy
PART THREE - OPERATING MACHINES
1. Machines for working the land (classification and general information; tempering; moldboard plows and disc plows; reversible plows and plowing methods: equal to bridging and rilling; fixed and mobile harrows; pdp driven harrows; soil pulverizers; Rotary Tillers);
2. Machines for products distribution and harvestf (fertilizer spreaders, manure spreaders, slurry spreaders, universal seed drillers with mechanical and pneumatic lines; precision seeders; machines for the management of forage crops).
FOURTH PART - TECHNOLOGY OF AGRICULTURAL MECHANIZATION
1. Basic notions for the selection and sizing of agricultural machinery;
2. Elements of economic analysis of agricultural machines.
The part of "EXERCISES" integrates the aforementioned topics through dedicated examples and exercises