Dynamics of Machines and Mechanical Systems
Aims of the course
Aim of the course of Dynamics of Machines and
Mechanical Systems
is providing the essential concepts
to find out, formulate mathematical models, simulate and experiment main vibrational phenomena of relevant technical
interest in machines and mechanical systems.
The course (6 CFU) has been activeted for the first
time during the a.y. 2004-2005, and it is located in the first year of the
specialistic degree in Mechanical Engineering for Design and Production.
Short list of
topics:
- 1 d.o.f. systems: Free and forced vibrations
with and without damping.
- Vibrations meters: Vibrometers, accelerometers,
strain gauges, vibrations exciters, digital signals analysis.
- 2 d.o.f. systems: Free and forced motion;
stiffness and elasticity coefficients; dynamic dampers.
- Multi d.o.f. systems: Motion equations;
eigenvalues and eigenvectors; modal analysis; forced motion; constraints
free systems; numerical algorithms and related computer programs.
- Flexural critical speeds: Constraints
of shafts; [A] matrix; rigid and elastic constraints; discs inertia effect;
numerical algorithms; the Myklestad method.
- Torsional vibrations: Equivalent systems;
forced motion; critical speeds; forced torsional strains.
- Non-linear systems:
Dynamic behaviour of a 1 d.o.f
non-linear system; forced motion of a 1 d.o.f. non-linear system; Poincaré
sections; forced motion of a pendulum; introduction to Chaos; 2 d.o.f.
non-linear system: rotordynamics.
Suggested textbooks:
-
GUIDO A.R., DELLA VALLE S. - Vibrazioni meccaniche
nelle macchine - Liguori, Napoli, 2004
- OLEDZKI A., DE FALCO D., DELLA VALLE S. - Simulazione
dinamica dei sistemi fisici - CUEN, Napoli, 1991
- BAYO- DE JALON - Kinematics and Dynamic Simulation of
Multibody Systems
