Vol43No.5Oct.2023噪声与振动控制NOISEANDVIBRATIONCONTROL第43卷第5期2023年10月文章编号：1006-1355(2023)05-0221-06局域共振船体板架超结构低频隔振特性研究陈鼎康1,2，李欣欣3，李应刚1,2,4，朱凤娜1,2（1.高性能舰船技术教育部重点实验室（武汉理工大学），武汉430063；2.武汉理工大学船海与能源动力工程学院，武汉430063；3.长庆工程设计有限公司，西安710018；4.武汉理工大学三亚科教创新园，海南三亚572025）摘要：声学超材料独特的亚波长带隙特性使其在船舶工业低频减振降噪领域呈现广泛的潜在应用价值。针对船舶机械设备低频振动和噪声控制问题，采用Solid-Shell多物理场耦合有限元法研究局域共振船体板架超结构弯曲波传播特性，分析船体板架超结构弯曲波带隙机理与减振特性，研究局域共振子的宽度与高度、面板厚度对弯曲波带隙特性与减振特性的影响。研究结果表明，相比典型船体板架结构及阻振质量船体板架结构，局域共振船体板架超结构在低频范围内存在弯曲波带隙，显示出优良的低频隔振性能，可以有效隔离船舶机械设备低频振动激励源。关键词：振动与波；船体板架超结构，局域共振，弯曲波带隙，低频隔振中图分类号：U663.7文献标志码：ADOI编码：10.3969/j.issn.1006-1355.2023.05.034LowFrequencyVibrationIsolationCharacteristicsofHullGrillageMetastructureswithLocalResonatorsCHENDingkang1,2,LIXinxin3,LIYinggang1,2,4,ZHUFengna1,2(1.KeyLaboratoryofHighPerformanceShipTechnology(WuhanUniversityofTechnology),MinistryofEducation,Wuhan430063,China;2.SchoolofNavalArchitecture,OceanandEnergyPowerEngineering,WuhanUniversityofTechnology,Wuhan430063,China;3.ChangqingEngineeringDesignCo.,Ltd.,Xi′an710018,China;4.SanyaScienceandEducationInnovationPark,WuhanUniversityofTechnology,Sanya572025,Hainan,China)Abstract:Acousticmetamaterialshavewidepotentialapplicationsinthefieldoflowfrequencyvibrationandnoisereductionduetotheiruniquesubwavelengthbandgapcharacteristics.InordertocontrollowfrequencyvibrationandnoiseofMarinepowerequipment,theflexuralwavepropagationcharacteristicsofhullgrillagemetastructurewithlocalresonatorsarestudiedbyusingtheSolid-Shellmulti-physicalfieldcoupledfiniteelementmethod,andthebandgapandvibrationisolationmechanismofthehullgrillagemetast...
