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Investigation of locally resonant absorption and factors affecting the absorption band of a phononic glass
Chen M(陈猛); Jiang H(姜恒); Feng YF; Wang YR(王育人); Wang, YR (reprint author), Chinese Acad Sci, Inst Mech, Key Lab Micrograv, Beijing 100190, Peoples R China.
Source PublicationAPPLIED PHYSICS A-MATERIALS SCIENCE & PROCESSING
2014-12
Volume117Issue:4Pages:2067-2072
ISSN0947-8396
AbstractWe experimentally and theoretically investigated the mechanisms of acoustic absorption in phononic glass to optimize its properties. First, we experimentally studied its locally resonant absorption mechanism. From these results, we attributed its strong sound attenuation to its locally resonant units and its broadband absorption to its networked structure. These experiments also indicated that the porosity and thickness of the phononic glass must be tuned to achieve the best sound absorption at given frequencies. Then, using lumped-mass methods, we studied how the absorption bandgaps of the phononic glass were affected by various factors, including the porosity and the properties of the coating materials. These calculations gave optimal ranges for selecting the porosity, modulus of the coating material, and ratio of the compliant coating to the stiff matrix to achieve absorption bandgaps in the range of 6-30 kHz. This paper provides guidelines for designing phononic glasses with proper structures and component materials to work in specific frequency ranges.
Subject AreaMaterials Science ; Physics
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Indexed BySCI ; EI
Language英语
WOS IDWOS:000345293200053
Funding OrganizationWe acknowledge project supported by the National Natural Science Foundation of China (Grant No 11202211 and 11272315) and the opening project of State Key Laboratory of Explosion Science and Technology (Beijing Institute of Technology). The opening project number is KFJJ14-5 M.
DepartmentNML空间材料物理力学
Classification二类
RankingTrue
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Cited Times:2[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://dspace.imech.ac.cn/handle/311007/49450
Collection国家微重力实验室
Corresponding AuthorWang, YR (reprint author), Chinese Acad Sci, Inst Mech, Key Lab Micrograv, Beijing 100190, Peoples R China.
Recommended Citation
GB/T 7714
Chen M,Jiang H,Feng YF,et al. Investigation of locally resonant absorption and factors affecting the absorption band of a phononic glass[J]. APPLIED PHYSICS A-MATERIALS SCIENCE & PROCESSING,2014,117(4):2067-2072.
APA Chen M,Jiang H,Feng YF,Wang YR,&Wang, YR .(2014).Investigation of locally resonant absorption and factors affecting the absorption band of a phononic glass.APPLIED PHYSICS A-MATERIALS SCIENCE & PROCESSING,117(4),2067-2072.
MLA Chen M,et al."Investigation of locally resonant absorption and factors affecting the absorption band of a phononic glass".APPLIED PHYSICS A-MATERIALS SCIENCE & PROCESSING 117.4(2014):2067-2072.
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