A reduced formulation for the free-wave propagation analysis in composite structures

被引：70

作者：

Droz, C. ^{[1
,2
]}

Laine, J-P ^{[1
]}

Ichchou, M. N. ^{[1
]}

Inquiete, G. ^{[2
]}

机构：

[1] Ecole Cent Lyon, F-69134 Ecully, France

[2] Airbus Helicopters, F-13725 Marignane, France

来源：

COMPOSITE STRUCTURES | 2014年 / 113卷

关键词：

Wave propagation; Composite waveguides; Dispersion curves; Reduction; Wave finite elements; FINITE-ELEMENT-ANALYSIS; PERIODIC STRUCTURES; FORCED VIBRATIONS; GUIDES; MOTION; FLUID;

D O I：

10.1016/j.compstruct.2014.03.017

中图分类号：

O3 [力学];

学科分类号：

08 ; 0801 ;

摘要：

This paper presents an improved numerical strategy for the broadband analysis of wave propagation in composite or complex cross-sectional waveguides using the wave finite element method (WFE). Numerical analysis of such structures require highly discretized finite element models and leads to extensive computations. The proposed formulation relies on a projection of the cross-sectional transfer matrices on a reduced set of shape functions associated to propagating waves. Dispersion curves are then predicted only using a reduced number of eigenvectors. The performances and stability of this method are evaluated using the wavenumbers and wave shapes. Validations are provided for a sandwich composite beam and a cylindrical elasto-acoustic waveguide. (C) 2014 Elsevier Ltd. All rights reserved.

引用

页码：134 / 144

页数：11

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