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1、AbstractMicro.perforatedpanelabsorberisaresonantsoundabsorbingstructurewhichiscomposedofaperforatedpanelwithlessthan1mmindiameterandtherearcavityofthepanel.Itisrecoverable,re.use,non.combustible,sturdyandlightweightcomparedwiththetraditionalporoussound.a(chǎn)bsorbingmateriala
2、ndordinaryperforatedpanelabsorber.Inaddition,Micro-perforatedpanelabsorbercangetagoodacousticperformancewithoutadditionalfiberandotherporoussound。absorbingmaterial.Asaresult,ithasbeensuccessfullyappliedinmanyfieldssuchasthebuildingsinside,themuffler,shipsandetc.Itisaccep
3、tedthatmicro’perforatedpanelabsorberisanewgenerationandthemostattractivesound—absorbingmaterial.TheabsorptionpropertiesofMicro-perforatedpanelabsorberdependmainlyonitsstructureparameters.Asaresult,reasonableparameterscanobtainbettersoundabsorption.Butitisunrealistictosea
4、rchfortheoptimumparametersthroughtheexhaustivesearch.Classicalmodelofmicro.perforatedpanelassumesthatthepanelisrigid.Asaresult,theeffectofpropertiesofthepanelisignored.Buttheprecisionofthemodelwilldecreaseifthiseffectmustnotbeignored.Inthispaper,manyadvantagesandinadequa
5、ciesoftheclassicmicro。perforatedpanelabsorberisanalyzed.Theauthorpaysmuchmoreattentiontotheoptimaldesignofstructuralparametersofthemicro—perforatedpanelabsorberandcomputersimulation.Inthispaper,thefollowingaspectshavebeendoneinmywork·Firstly’soundabsorptionperformanceofm
6、icro—perforatedpanelabsorberisdeterminedbyanumberofstructuralparameters.EffectofsoundabsorptioncharacteristicsofparametersontheMicro.perforatedpanelabsorberisanalyzeddeeplythroughtheMATLABsimulation.Andasimulationdesignsystemofmicro-perforatedpanelabsorberisdevelopedbase
7、donMATLABandLABVIEWcode,whichcandesignthemicro-perforatedpanelabsorberstructureaccordingtotherequirementsofthespecificengineerapplicationbackgroundconvenientlyintwoways.Secondly,theAdaptivenichegeneticalgorithmisusedinoptimizingmonolayeranddoublelayermicro.perforatedpane
8、labsorberinthispaper.Widerbandandhigherabsorptioncometruebysearchingfortheoptimalcombinationofparameter