Prof. Stefano Bruni

Argomenti del programma: The course covers the fundamental principles of classical mechanics, from kinematics and dynamics of particles to energy and momentum conservation, with practical and computational applications. Introduction Physical quantities. The International System of Units. Dimensional analysis, Measurement uncertainties and significant figures. Scalar and vector quantities.

• Lecture notes Note: Lecture notes, training material and proposed exercises will be made available on BeeP.

Argomenti del programma: 1. Dynamics and vibration of single, two and multi-degree-of-freedom systems 1.1 Free and forced vibrations of single-degree-of-freedom linear systems. Natural frequency and damping factor. The Frequency Response Function. The superposition principle and the response to different kinds of input (step, harmonic, periodic, non-periodic). 1.2 Non-linear vibration of single-degree-of-freedom systems.

Argomenti del programma: Rail vehicle modelling: 1.1 Detailed rail vehicle structure 1.2 Wheel-rail contact forces: stresses and deformation of contacting bodies, definition of creepages, geometrical aspects of wheel-rail contact, models for contact forces 1.3 Modelling of suspension components. 1.4. Semi analytical models: wheelset on tangent track and curve, bogie on tangent track and curve: dynamics and steady state condition.