文章信息/Info

Title:

Tuning Method of Low-Frequency Acoustics for Locally Resonant Pentamode Metamaterials

作者:

蔡成欣1; 2; 寧博3; 周路人1; 梁俊燕1; 秦瑤1; 楚楊陽4; 王兆宏5

（1.河南工業(yè)大學信息科學與工程學院，河南 鄭州 450001）（2.河南工業(yè)大學 糧食信息處理與控制教育部重點實驗室，河南 鄭州 450001）（3.工業(yè)和信息化部電子第五研究所，廣東 廣州 510610）（4.鄭州輕工業(yè)大學軟件學院，河南 鄭州 450001）（5.西安交通大學電子科學與工程學院 物理電子與器件教育部重點實驗室，陜西 西安 710049）

Author(s):

CAI Chengxin1; 2;  NING Bo3;  ZHOU Luren1;  LIANG Junyan1;  QIN Yao1;  CHU Yangyang4;  WANG Zhaohong5

（1.College of Information Science and Engineering, Henan University of Technology, Zhengzhou 450001, China) （2.Key Laboratory of Grain Information Processing and Control of the Ministry of Education, Henan University of Technology, Zhengzhou 450001, China) , et al.

關(guān)鍵詞:

五模超構(gòu)材料; 局域共振; 低頻聲波; 有限元方法; 復合材料; 人工增材制造

Keywords:

pentamode metamaterials; locally resonant; low-frequency acoustics; finite element method; composite material; artificial additive manufacturing

分類號:

O482.1

DOI:

10.7502/j.issn.1674-3962.202007001

文獻標志碼:

A

摘要:

五模超構(gòu)材料是一類具有固體結(jié)構(gòu)與“流體”特性的人工微結(jié)構(gòu)，由于較好的壓縮波與剪切波的解耦合能力、較低的填充率、豐富的晶格構(gòu)型及可調(diào)參數(shù)較多等特點，在聲波/彈性波隱身衣、聲學波導、聲學超構(gòu)表面等聲波調(diào)控領(lǐng)域具有潛在應(yīng)用。由單質(zhì)材料組成的五模超構(gòu)材料可以被看作是布拉格散射型的聲子晶體，其工作頻率在高頻波段，而目前針對低頻聲波調(diào)控的五模超構(gòu)材料的研究還比較少。從3個部分介紹局域共振型五模超構(gòu)材料的低頻聲波調(diào)控方法和研究進展：首先，對五模超構(gòu)材料的基本概念及國內(nèi)外研究現(xiàn)狀進行介紹；其次，對兩種局域共振型五模超構(gòu)材料的設(shè)計及數(shù)值計算過程、能帶結(jié)構(gòu)及帶隙調(diào)控方法進行介紹；最后，對五模超構(gòu)材料的樣件加工技術(shù)及測試手段進行介紹，并對局域共振型五模超構(gòu)材料研究中亟待解決的科學及工程問題進行總結(jié)及展望，期望為后續(xù)五模超構(gòu)材料在低頻聲波控制領(lǐng)域的研究及工程應(yīng)用提供參考。

Abstract:

Pentamode metamaterial (PM) is a kind of artificial microstructure with a solid structure and the characteristic of “fluid”. Due to the better uncoupling property of compressional and shear waves, lower filling rate, multitudinous lattice structures and more adjustable parameters, it has potential applications in acoustic wave regulation fields, such as acoustic/elastic wave cloak, acoustic waveguide and acoustic metasurface. The PM composed of elemental materials can be regarded as a Bragg scattering phononic crystal, whose operating frequency is in a high-frequency range. However, there are few studies focusing on the PM which regulated the low-frequency acoustic waves. In this paper, the low-frequency acoustic wave tuning methods and research progress of locally resonant PMs are introduced in three aspects. Firstly, the basic concepts and research progress of PMs are expounded. Secondly, the designing and numerical calculation process of locally resonant PMs, band structure and phononic band gaps (PBGs) control methods, sample processing and testing methods are introduced in detail. Finally, the scientific and engineering problems that need to be solved urgently in the research of locally resonant PMs are analyzed and discussed. By this way, it is expected to provide a reference for the research and engineering applications of PMs in the field of low-frequency acoustic control.