-The aim this course is to introduce the basic concepts of strength of materials -To present the basic fundamentals of agricultural machines design. -To teach stress and strain formulas -To give important design parameters about basic stresses on selected agricultural machines (Tension, Compression, Shear, Torsion, Deflection, Combined Stresses) -To teach stress and strain relations -To give selection of materials for Agricultural Machines (Criteria for Selection, Endurance-Limit Modifying Factors, Reliability, alternative Solutions -To teach the concepts of safe carrying capacity under critical section and/or critical load conditions. -To teach techniques of sizing or resizing of loaded cross sections, connections and attachments -To give practical information in which such an analysis can be used in a real system.

To introduce the concepts of overall strength of materials. To introduce the machine elements used in general. The basic types of stress. Defining of one, two and three-dimensional state of stress. Tension stress Torsion Combined stress Effect of axial force and the normal stresses of the system of aquations to describe the analytical and Mohr circle and to obtain appropriate material strength for design purpose. Shear-type effects of shear force and shear stres and to introduce the concept of applications for simple problem representation. Transmission systems used in machines. Stress analysis will emerge in beams subjected to bending moment of inertia. Simple bending and cross-section determination. Hyper static problems in axial loaded rods. Thermal stresses and deformations Analysis of the combined strength Buckling of columns Critical stress - frailty relations