Vibration mechanics

Research at DIME on the mechanics of vibration and noise is conducted using theoretical, numerical, and experimental approaches, often combined. In the theoretical field, mathematical tools of asymptotic analysis are used to study the dynamic response of linear and nonlinear systems. Numerically, within the context of the finite element method (FEM), methods are developed for the treatment of geometric uncertainties, for model dimensional reduction, for reduced-order modeling of fixed and moving interfaces, and for vibro-acoustic analyses through a combination of the boundary element method (BEM) and FEM. Experimental research includes the development of vibro-acoustic measurement and analysis techniques aimed at modal identification, monitoring and model identification, and noise source quantification. Some currently active research topics are listed below.

  • Effect of geometric uncertainties on the dynamic response of mechanical components
  • Development of dimension reduction techniques within the finite element method
  • Dynamic identification of mechanical systems under transient operating conditions
  • Asymptotic analysis of weakly detuned dynamic systems
  • Vibration analysis of turbomachinery rotor disks monitored by non-contact sensors (blade tip timing method)
  • Analysis of the unstable behavior of hydrodynamic bearings (oil whirl/whip) and their interaction with the rotor structure
  • Study of vibro-acoustic energy from a source to a receiver through structural paths or airways
  • Rotordynamic analysis of turbomachinery

Laboratories

Lab. of Dynamics and Vibrations in Machines

Publications

  • Carassale, L., Denoel, V., Martel, C., Panning-von Scheidt, L. (2020). Key features of the transient amplification of mistuned systems, Journal of Engineering for Gas Turbines and Power, GTP-20-1517.
  • Niccolini Marmont Du Haut Champ, C.A., Silvestri, P. (2020). Experimental and numerical vibro-acoustic investigation on a trimmed car door to analyze slamming event, Applied Acoustics, 166, art. no. 107380.
  • Carassale, L., Cavicchi, A., Bruzzone, S., Brunenghi, M.M. (2019). Probabilistic response of a bladed disk with uncertain geometry. Journal of Engineering for Gas Turbines and Power, 141(10),101024.
  • Silvestri, P., Zoppi, M., Molfino, R. (2019). Dynamic investigation on a new robotized vehicle for urban freight transport, Simulation Modelling Practice and Theory, 96, art. no. 101938.
  • Carassale, L., Maurici, M. (2018). Interface Reduction in Craig-Bampton Component Mode Synthesis by Orthogonal Polynomial Series, Journal of Engineering for Gas Turbines and Power, 140(5),052504.
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