Lamb wave propagation in negative Poisson's ratio composites

被引：5
|
作者：
Remillat, Chrystel [1 ]
Wilcox, Paul
Scarpa, Fabrizio [1 ]
机构：
[1] Univ Bristol, Dept Aerosp Engn, Bristol BS8 1TR, Avon, England
来源：
HEALTH MONITORING OF STRUCTURAL AND BIOLOGICAL SYSTEMS 2008 | 2008年 / 6935卷
关键词：
Lamb wave; auxetic; wave propagation;
D O I：
10.1117/12.776022
中图分类号：
TH [机械、仪表工业];
学科分类号：
0802 ;
摘要：
Lamb wave propagation is evaluated for cross-ply laminate composites exhibiting through-the-thickness negative Poisson's ratio. The laminates are mechanically modeled using the Classical Laminate Theory, while the propagation of Lamb waves is investigated using a combination of semi analytical models and Finite Element time-stepping techniques. The auxetic laminates exhibit well spaced bending, shear and symmetric fundamental modes, while featuring normal stresses for A(0) mode 3 times lower than composite laminates with positive Poisson's ratio.
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页数：8
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