COSTRUZIONE DI MACCHINE I

Based on the concepts acquired in Structural Mechanics and Applied Mechanics, we will provide the basis for the design of components and simple mechanical systems.

Technical project. Singular functions. Materials Testing.

Beams, diagrams of T and M.

Equivalent stresses.

Material fatigue.

Integrated design. Ecodesign.

Selection of materials.

Cumulative damage. Thermographic method.

Notch effects.

Damping.

Springs.

Leaf springs of rod holders. Springs with progressive stiffness.

Coil springs. Torsion springs.

Conical torsion springs.

Ring-shaped springs.

Tubes.

Forced shaft-hub connections. Forced connections plate-fly.

Tabs. Sticks.

Lubrication: general equations.

Thrust bearing. Plain bearing.

Theory of Hertz. Stribeck formula.

Rotational bearings.

Flanged joints. Flexible couplings. Bibby joint. Voith-Maurer joint.

Gimbal. Oldham coupling.

Toothed wheels. Thickness of the tooth. Schiebel fitting.

Minimum number of teeth. specific sliding.

Gears design. dynamic correction of the allowable voltage. Bending calculation. Wear calculation. Correct gears.

Grafts.

Brakes. Disk brakes.Drum brakes.

Exercises on the design and verification of the mechanical parts.

1. R. Giovannozzi. Costruzione di Macchine. Patron Editore.

2. A. Risitano. Appunti del corso.