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【答案】应助回帖
感谢参与，应助指数 +1
Simulation of a metamaterial beam for mechanical wave absorption
作者:Lin, GC (Lin Guo-Chang)[ 1 ] ; Sun, HW (Sun Hong-Weit)[ 1 ] ; Tan, HF (Tan Hui-Feng)[ 1 ] ; Du, XW (Du Xing-Wen)[ 1 ]
ACTA PHYSICA SINICA
卷: 60 期: 3
文献号: 034302
出版年: MAR 2011
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摘要
In this paper, we present a metamaterial beam consisting of a uniform isotropic beam with many small mass-spring systems serving as mechanical wave absorbers. Based on the analysis of two different mass-spring systems, negative effective mass and negative effective stiffness are explained theoretically. The governing equations of a unit cell of a metamaterial beam are derived using the Hamilton' s principle. The mechanical wave absorbabilities of the following two different finite metamaterial beams are analyzed by numerical simulation: one is the bean in which mass-spring systems with linearly varying elastic coefficients are uniformly distributed, and the other is the bean in which four identical absorber subgroups composed of spring-damper subsystems with linearly varying natural frequenciesare uniformly distributed. The results reveal that the mechanical wave transmitted in the metamaterial beam is absorbed by resonating with spring-mass absorbers, which verifies the effectivity of the proposed metamaterial beam on mechanical wave absorption.
关键词
作者关键词:metamaterial beam; negative effective mass; negative effective stiffness; mechanical wave
KeyWords Plus:RESONANT SONIC MATERIALS
作者信息
通讯作者地址: Sun, HW (通讯作者)
显示增强组织信息的名称 Harbin Inst Technol, Ctr Composite Mat & Struct, Harbin 150001, Peoples R China.
地址:
显示增强组织信息的名称 [ 1 ] Harbin Inst Technol, Ctr Composite Mat & Struct, Harbin 150001, Peoples R China
电子邮件地址:sunhw@hit.edu.cn
基金资助致谢
基金资助机构 授权号
National High Technology Research and Development Program 863
2008AA12A205
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出版商
CHINESE PHYSICAL SOC, P O BOX 603, BEIJING 100080, PEOPLES R CHINA
类别 / 分类
研究方向 hysics
Web of Science 类别hysics, Multidisciplinary
文献信息
文献类型:Article
语种:Chinese
入藏号: WOS:000288925700056
ISSN: 1000-3290
期刊信息
Impact Factor (影响因子): Journal Citation Reports®
其他信息
IDS 号: 742FC
Web of Science 核心合集中的 "引用的参考文献": 16
Web of Science 核心合集中的 "被引频次": 1 |
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