A refined finite element model is proposed for modeling composite treated panels as used in the automotive industry. These panels are made from several layers (metal, damping, porous and heavy layers). The kinematics of the system is first described with special attention to interface boundary conditions. Elastic shell models are selected for the metal, damping and heavy layers while an anisotropic elastic solid model is used for the porous model. The interaction between the elastic skeleton and the fluid flow through the pores is also considered. The fluid model incorporates the resistivity effects due to the pores. A global coupled model is set up and a solution procedure is proposed. A numerical example is presented in order to show the efficiency of the related VIOLINS program (Vibration Of Layered INsulation Systems).
展开▼
