Wave propagation in locally resonant cylindrically curved metamaterial panels

被引：58

作者：

Nateghi, A. ^{[1
]}

Van Belle, L. ^{[1
]}

Claeys, C. ^{[1
]}

Deckers, E. ^{[1
]}

Pluymers, B. ^{[1
]}

Desmet, W. ^{[1
]}

机构：

[1] Katholieke Univ Leuven, Dept Mech Engn, PMA Div, Flanders Make, Celestijnenlaan 300,Box 2420, B-3001 Heverlee, Belgium

来源：

INTERNATIONAL JOURNAL OF MECHANICAL SCIENCES | 2017年 / 127卷

关键词：

Metamaterial; Bloch-Floquet; Wave propagation; Cylindrically curved panels; Complex wavenumber; Periodic structures; VIBRATION SUPPRESSION; ABSORPTION; SHELLS; PLATES;

D O I：

10.1016/j.ijmecsci.2016.07.003

中图分类号：

TH [机械、仪表工业];

学科分类号：

0802 ;

摘要：

Combining lightweight characteristics with favourable noise and vibration behaviour, locally resonant metamaterials with vibro-acoustic stopband behaviour are gaining increasingly more attention. In view of applicability of metamaterials, this paper investigates the effects of curvature on stopband behaviour. Through derivation of curved unit cell models, dispersion curves for cylindrically curved infinite periodic structures are derived. The effect of curvature on metamaterials is investigated through both an academic example of an infinite cylindrically curved panel with added spring-mass systems and a realizable curved panel with resonant structures. It is shown that, whenever pure flexural motion exists in the host structure, the stopband mechanism can be applied to achieve flexural stopbands.

引用

页码：73 / +

页数：18

共 33 条

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