Harmonic response computation of poroelastic multilayered structures using ZPST shell elements

Authors:
Jean-Daniel Chazot;Benoit Nennig;Emmanuel Perrey-Debain
Affiliations:
Université de Technologie de Compiègne, Laboratoire Roberval UMR 7337, BP 20529, 60205 Compiègne cedex, France;Laboratoire d'Ingénierie des Systèmes Mécaniques et des Matériaux (LISMMA), SUPMECA, 3 rue Fernand Hainaut, 93407 Saint-Ouen, France;Université de Technologie de Compiègne, Laboratoire Roberval UMR 7337, BP 20529, 60205 Compiègne cedex, France
Venue:
Computers and Structures
Year:
2013

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Abstract

This paper uses a multilayered shell element to compute the dynamic response of multilayered poroelastic structures such as car instrument panels, car floors, or car roofs. It is based on the P-order Shear deformation Theory with an added Zigzag function (ZPST). Biot's theory is used to describe the poroelastic layer and standard couplings are realized between elastic and poroelastic layers. A method based on Pade approximants is also used in order to reduce the computation time. This acceleration technique enables to achieve fast frequency sweep computations compared to a standard direct method. Finally, numerical validations on plates and curved geometries are presented.