italian version

Aims :

The course aims to introduce the students to the study of technical problems related to mechanical vibrations and noise. Both the numerical and experimental techniques, used in support to design and failure analysis, will be explored.

Topics :

Single-Degree-of-Freedom: free and force vibration solution, damped systems, examples and applications. Natural mode shapes and frequencies. Forced vibrations: modal analysis. Continuous systems: strings, beams, membranes and plates. Dynamic characterisation of natural frequencies. Vibration isolation. Numerical modal analysis and Finite Element Methods.
Experimental modal analysis and modal testing. Vibration monitoring and diagnostic.
Study of human exposure to vibration. Vibration testing instrumentation: accelerometers, Laser Doppler Vibrometers, strain gauges. Digital signal processing. Mechanical vibration and noise. Acoustic principles. Numerical computation methods for the acoustic propagation from vibrating structures (Boundary Element Methods). Vibration and noise reduction in mechanical components.
Numerical projects (by means of Matlab, Ansys) and Laboratory test sessions (by means of LMS-Cada-X Modal Analysis Software).


Textbooks :

D. J. Ewins, “Modal testing: theory and practice”, Research Studies Press, London.

Exam :

The student has to carry out an experimental work concerning one of the course subjects in the labs of the Mechanical Department. The examination consists in an oral discussion of the subjects of the course and of the experimental work.

Tutorial Session :

Every day at the Mechanical Department from 8.30 am to 7.00 pm.
Appointments by phone or e-mail.