Equivalent dynamic model of multilayered structures with imperfect interfaces: Application to a sandwich structured plate with sliding interfaces

This works aims to build an equivalent model of multilayered structures with imperfect interfaces for vibro-acoustic modeling and characterization. To take into account imperfections, new interface conditions including constitutive equations, that describe the are implemented. Once displacement field is obtained, dispersion relation structure derived from model. The bending wavenumbers then used compute flexural rigidity damping sandwich panel. In this paper, methodology applied a panel sliding interfaces. parameters computed compared reference case, i.e. perfect main impact imperfection on results shift towards low frequency parameter curves.