Title: Numerical simulation of Lamb wave propagation in metallic foam sandwich structures : a parametric study
Authors : Hosseini, Seyed Mohammad Hossein
Kharaghani, Abdolreza
Kirsch, Christoph
Gabbert, Ulrich
Published in : Composite Structures
Volume(Issue) : 97
Pages : 387
Pages to: 400
Publisher / Ed. Institution : Elsevier
Issue Date: 2013
License (according to publishing contract) : Licence according to publishing contract
Type of review: Peer review (publication)
Language : English
Subject (DDC) : 500: Natural sciences and mathematics
530: Physics
Abstract: The propagation of guided Lamb waves in metallic foam sandwich panels is described in this paper and analyzed numerically with a three-dimensional finite element simulation. The influence of geometrical properties of the foam sandwich plates (such as the irregularity of the foam structure, the relative density or the cover plate thickness) on the wave propagation is investigated in a parametric study. Open-cell and closed-cell structures are found to exhibit similar wave propagation behavior. In addition to the finite element model with fully resolved microstructure, a simplified, computationally cheaper model is also considered – there the porous core of the sandwich panel is approximated by a homogenized effective medium. The limitations of this homogenization approach are briefly pointed out.
Departement: School of Engineering
Organisational Unit: Institute of Computational Physics (ICP)
Publication type: Article in scientific journal
DOI : 10.1016/j.compstruct.2012.10.039
ISSN: 0263-8223
URI: https://digitalcollection.zhaw.ch/handle/11475/12351
Appears in Collections:Publikationen School of Engineering

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