Vibration transfer analysis of component interfaces by a power flow mode approach

Thomas Weisser (1) , Luc Olivier Gonidou (2) , Emmanuel Foltete (1) , Noureddine Bouhaddi (1)

1 FEMTO-ST - Franche-Comté Électronique Mécanique, Thermique et Optique - Sciences et Technologies (UMR 6174)
2 CNES - Centre National d'Études Spatiales [Toulouse]

A method has been developed to dynamically characterize complex structures’ interfaces at low frequencies. The aim is to optimize vibration isolation of a main structure subjected at its junctions to forces generated by connected substructures. An eigenvalue problem is formulated by minimizing the average dissipated power flow of the system. Hence, the derived eigenvalues and eigenvectors describe the energy pattern at each given frequency. It is then possible to characterize the real interface forces and, for example, to control them by determining the appropriated external forces to apply to the structure. This method has been studied on an academic system and applied to a simple coupled structure.

Domaines: Mécanique [physics]

Thomas Weisser, Luc Olivier Gonidou, Emmanuel Foltete, Noureddine Bouhaddi. Vibration transfer analysis of component interfaces by a power flow mode approach. European Journal of Computational Mechanics, 2011, 20 (1-4), pp.29 - 47. ⟨hal-02300203⟩