Enhancement of wave damping within metamaterials having embedded negative stiffness inclusions

被引：59

作者：

Chronopoulos, D. ^{[1
]}

Antoniadis, I. ^{[2
]}

Collet, M. ^{[3
]}

Ichchou, M. ^{[4
]}

机构：

[1] Univ Nottingham, Div Mat Mech & Struct, Nottingham NG7 2RD, England

[2] Natl Tech Univ Athens, Sch Mech Engn, Machine Design & Control Syst Sect, GR-10682 Athens, Greece

[3] CNRS, UMR 5513, LTDS, F-69130 Ecully, France

[4] Ecole Cent Lyon, F-69130 Ecully, France

来源：

WAVE MOTION | 2015年 / 58卷

关键词：

Damping; Negative stiffness; Composite structures; Metamaterials; Wave propagation; COMPOSITE-MATERIALS; VIBRATION ISOLATOR; PROPAGATION; PREDICTION; SPRINGS; SYSTEMS; MOTION;

D O I：

10.1016/j.wavemoti.2015.05.005

中图分类号：

O42 [声学];

学科分类号：

070206 ; 082403 ;

摘要：

The wave dissipation properties of layered periodic structures are modelled by FE as well as analytical approaches. A linear oscillator incorporating a negative stiffness element and having exceptional energy dissipation properties is exhibited and incorporated within the modelled structures. The structural dynamic stability of both the oscillator and the modelled waveguides is discussed and ensured. The numerical results provide evidence of a drastic increase of several orders of magnitude for the damping ratio of the flexural waves propagating within the structures. (C) 2015 Elsevier B.V. All rights reserved.

引用

页码：165 / 179

页数：15

共 49 条

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[Anonymous], 2003, Passive vibration isolation

[2]

[Anonymous], 1989, VIBRATION PROTECTION

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