Optimizing microstructure of a poroelastic layer with cylindrical pores for absorption properties

摘要

The present work addresses the problem of multi-scale characterization and optimization of absorption properties of poroelastic materials. Considering the microstructural parameters, we compute the effective properties and field equations within the framework of Biot's theory. Asymptotic homogenization method is used for computing the effective properties which are then applied to solve an acoustic problem. The solution of the latter problem enables the choice of the objective function for the optimization procedure of the optimal design of an unit cell. Preliminary numerical studies show that different skeleton rigidity (soft, stiff or perfectly rigid) may lead to distinct acoustic behavior and optimal parameters for the poroelastic panel. (C) 2019 Elsevier Ltd. All rights reserved.