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| G. Lin, H. Sun, H. Tan, and X. Du,”Simulation of a metamaterial beam for mechanical wave absorption,” Acta Physica Sinica 60(3), 034302(7pp), 2011 |
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sunhw_hit: 金币+10, ★★★★★最佳答案, 谢谢 2015-04-22 10:43:59
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3楼2015-04-22 10:36:44
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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 查看期刊信息 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 查看基金资助信息 出版商 CHINESE PHYSICAL SOC, P O BOX 603, BEIJING 100080, PEOPLES R CHINA 类别 / 分类 研究方向  hysicsWeb 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 |
2楼2015-04-22 10:36:01