Comparison of transmission loss prediction using condensed equivalent plate models
* Presenting author
Equivalent plate models are commonly used in order to simulate multilayer system as one single layer. This kind of approach enables for instance to reduce the mesh size and thus the number of degrees of freedom in finite element models. Usual condensed model rely on thin plate theory and are obviously limited when considering thick multilayers.In this work we present a comparison of the transmission loss prediction using different analytical models of solid layers: thin plate, thick plate (first order shear deformation) and 3D modelling (3D linear elasticity) . Doing so, analytical limits for the validity of thin and thick plate theories are derived from wavenumber analyses. Applications to real world cases are presented.