The knowledge, understanding and identification of dynamic phenomena are extremely important for effective design and good running of machines.
Modal and harmonic response analyses of accurate numeric models are essential tools for the characterization of the dynamic and acoustic behavior of machine elements or whole structures. DIMNP can count on a wide experience in the development and application of finite element codes in the field of structural dynamics. Moreover with its experimental equipment and software vibration (and in some case acoustic) signal acquisition and processing in time and frequency domains can be performed in order to identify dynamic loads and diagnose malfunctioning.
A test bench on which frequency response measurements can be performed even on big structures (4 m long, 2.5 m wide) is presently available.
In the last few years the research group has focused its efforts in rotor dynamics. A theoretical and numerical investigation has been carried out on the influence of bearings and seals on the dynamic behavior of rotors and on the possibility of vibration active control by acting upon conventional bearings.
A wide variety of dynamic phenomena observed in real machines can be reproduced and simulated on a test rig, a reduced scale model of a rotating machine. The data acquisition and processing system produces orbits and spectra on-line for further analyses. A novel magnetorheological squeeze film clamper to actively control rotor dynamics has been designed and tested on the test-rig. To evaluate the vibratory dynamics of rotating discs in the presence of dry friction a versatile test-bench has been set up and makes it possible to highlight many peculiar aspects of this phenomenon.

Contact persons
Prof. C. Carmignani E-mail This e-mail address is being protected from spambots. You need JavaScript enabled to view it
Prof. P. Forte E-mail This e-mail address is being protected from spambots. You need JavaScript enabled to view it