دورية أكاديمية
Broadband elastic metamaterial with single negativity by mimicking lattice systems
| العنوان: | Broadband elastic metamaterial with single negativity by mimicking lattice systems |
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| المؤلفون: | Liu, Yongquan, Su, Xianyue, Sun, C. T. |
| المساهمون: | Sun, CT (reprint author), Purdue Univ, Sch Aeronaut & Astronaut, W Lafayette, IN 47907 USA., Peking Univ, Coll Engn, Dept Mech & Aerosp Engn, Beijing 100871, Peoples R China., Purdue Univ, Sch Aeronaut & Astronaut, W Lafayette, IN 47907 USA. |
| المصدر: | EI ; SCI |
| بيانات النشر: | 固体力学与固体物理学杂志 |
| سنة النشر: | 2015 |
| المجموعة: | Peking University Institutional Repository (PKU IR) / 北京大学机构知识库 |
| مصطلحات موضوعية: | Elastic metamaterial, Dispersion curve, Band gap, Lattice system, Wave propagation, COMPOSITE-MATERIALS |
| الوصف: | The narrow bandwidth is a significant limitation of elastic metamaterials for practical engineering applications. In this paper, a broadband elastic metamaterial with single negativity (negative mass density or Young's modulus) is proposed by mimicking lattice systems. It has two stop bands and the bandwidth of the second one is infinite theoretically. The effect of the relevant parameters on band gaps is discussed. A continuum model is proposed and the selection of materials is discussed in detail. It shows that continuum metamaterials can be described accurately by using the lattice model, and the second stopband can be ultra-broad but not infinite. This discrepancy is investigated and a method is provided to calculate the upper limit of the second stopband for a continuum metamaterial. As a verification, the proposed metamaterial is used for wave mitigation over broadband frequency ranges. Moreover, the present method is extended to design 2D anisotropic elastic metamaterials, and a device to control the direction of elastic wave transmission is proposed as an example. (C) 2014 Elsevier Ltd. All rights reserved. ; http://gateway.webofknowledge.com/gateway/Gateway.cgi?GWVersion=2&SrcApp=PARTNER_APP&SrcAuth=LinksAMR&KeyUT=WOS:000347363700010&DestLinkType=FullRecord&DestApp=ALL_WOS&UsrCustomerID=8e1609b174ce4e31116a60747a720701Test ; Materials Science, Multidisciplinary ; Mechanics ; Physics, Condensed Matter ; SCI(E) ; EI ; 5 ; ARTICLE ; sun@purdue.edu ; 158-174 ; 74 |
| نوع الوثيقة: | journal/newspaper |
| اللغة: | English |
| تدمد: | 0022-5096 1873-4782 |
| العلاقة: | JOURNAL OF THE MECHANICS AND PHYSICS OF SOLIDS.2015,74,158-174.; 753822; http://hdl.handle.net/20.500.11897/154135Test; WOS:000347363700010 |
| DOI: | 10.1016/j.jmps.2014.09.011 |
| الإتاحة: | https://doi.org/20.500.11897/154135Test https://doi.org/10.1016/j.jmps.2014.09.011Test https://hdl.handle.net/20.500.11897/154135Test |
| رقم الانضمام: | edsbas.A1BB0404 |
| قاعدة البيانات: | BASE |
| تدمد: | 00225096 18734782 |
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| DOI: | 10.1016/j.jmps.2014.09.011 |