杠杆型非线性耗散弹性超材料的宽频振动抑制方法研究

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关键词：宽频振动抑制；非线性耗散弹性超材料；杠杆式谐振器；耗散阻尼 中图分类号： TB535+.1 ;TB34 文献标志码：A DOI：10.16385/j.cnki.issn.1004-4523.202404018

Abstract：Levetyasticetamatealsgodabilityelatietoovetalpuremassspringstems，dteitd ofthebandgapcanbeefectivelyadjustedbyadjustingtheleveratioInodertoboadenthevibrationreductiobandwidthoftepasive vibratioisoastveteoardsipaisticetamatealispoedydugeaddsipaiin intothelever-tylasticetamateialTspaprdrivesaneplicitexpressionofteolieardspesionelatiousingtebation methodadivestigatesthandstructureofoliearodiiptieetamatealsithdifentoliearombinatios.eectsof structuralparametesotholiadsesioncesdewhadpositooftebandgapseexplod.Afinitetrutueofetye nonlineardissipatieelasticmetamaterialsisonstructedandarioustestsofitstrasientwavepropagationaeprfoedbyuical integrationmetodtoexploretholieanddmpingparameterstatcanprodeawiderelasticaveateuatoregio.Numcalrsults showthat theelastic wave attenuationregionofthis lever-type nonlinear disipativeelastic metamaterialincreases by 81.3% with respect to the linearnondissipativemetamaterials.

Keywords;broadbandvrationsuppesson;olieardissipativeelasticmetamaterials;lever-typeresonator;disipativedamping

弹性超材料是一类由特殊设计的人工微结构单元通过周期性排列构成的结构，其特性不取决于组成材料，而是取决于人工微结构单元与弹性波之间的耦合特性，因此具有独特的动态有效特性[1-4]。（剩余15129字）