Modelling Techniques for Vibro-Acoustic Dynamics of Poroelastic Materials

Abstract

The two final sections pay special attention to the promising Wave Based Method, a Trefftz-based technique, the application range of which was recently extended towards poroelastic problems.

Review of Finite Element Vehicle Interior Acoustic Simulations Including Porous Materials

“…Figure 6. : Geometric setup of the problem tackled by Panneton and Atalla [25] Deckers et al [27] provides an excellent summary of the various formulations of the Biot-theory and their numerical applications into a solution scheme. As the goal of this paper was to review practical applications in vehicle industry, the work done by Deckers and colleagues will not be discussed in detail, however it is important as a milestone for summarizing the possible numerical ways to include poroelastic modelling.…”

Formulation and validation of the shift cell technique for acoustic applications of poro-elastic materials described by the Biot theory

“…Although for many porous materials the frame can be considered almost rigid for a wide range of acoustical frequencies, thus allowing the use of models with motionless skeleton assumption [20,21], this is not generally true: for example, for a poro-elastic material attached to a vibrating structure and for many other similar situations, frame vibrations are induced by those of the elastic structure.…”

3 Case studies of model order reduction for acoustics and vibrations

“…Poro-elastic materials, for example, are often used in a sound absorption context. An overview of modeling approaches for poro-elastic materials can be found in amongst others [1,17]. Viscoelastic materials are often applied in a constrained component setting as this ensures shear, and thus more dissipation in the sample.…”