Vibro-acoustic behaviour of multi-layer orthotropic panels

Sebastian Ghinet, Noureddine Atalla

Abstract


Vibro-acoustic behavior of multi-layer orthotropic panels was discussed. A general eigenvalue approach based on wave theory was presented to compute the dispersion curves of panels. The radiation efficiency, the modal density and the group velocity were computed using these curves, and were used to predict the transmission loss of the panels. Results showed that at low frequencies the effect of bending dominates while at high frequencies shearing became significant.

Keywords


Acoustic properties; Acoustic waves; Eigenvalues and eigenfunctions; Frequencies; Integration; Matrix algebra; Numerical methods; Shear deformation; Strain; Vibrations (mechanical); Orthotropic panels

Full Text:

PDF

Refbacks

  • There are currently no refbacks.