Numerical simulation of Lamb wave propagation in metallic foam sandwich structures: a parametric study

被引：30

作者：

Hosseini, Seyed Mohammad Hossein ^{[1
]}

Kharaghani, Abdolreza ^{[2
]}

Kirsch, Christoph ^{[3
]}

Gabbert, Ulrich ^{[1
]}

机构：

[1] Univ Magdeburg, Inst Mech, Dept Numer Mech, D-39016 Magdeburg, Germany

[2] Univ Magdeburg, Inst Proc Engn, Dept Thermal Proc Engn, D-39016 Magdeburg, Germany

[3] Zurich Univ Appl Sci, Inst Computat Phys, CH-8401 Winterthur, Switzerland

来源：

COMPOSITE STRUCTURES | 2013年 / 97卷

关键词：

Lamb wave propagation; Metallic foam structure; Finite element method; Parametric study; DESIGN;

D O I：

10.1016/j.compstruct.2012.10.039

中图分类号：

O3 [力学];

学科分类号：

08 ; 0801 ;

摘要：

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. (C) 2012 Elsevier Ltd. All rights reserved.

引用

页码：387 / 400

页数：14

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