２０２３年第１５期基于压电材料的薄膜型声学超材料隔声性能研究亢健霖,孙文楷,周文杰,钟新成,苟玮,徐晓美(南京林业大学汽车与交通工程学院,江苏南京２１００３７)摘要:本文利用COMSOL软件研究了一种基于压电材料的薄膜型声学超材料的隔声性能,分析了压电块外接电路的电阻和电感对其隔声性能的影响,并探讨了其在汽车顶板上应用的可行性.研究表明,加入压电块的薄膜型声学超材料隔声性能明显提高;外接电路的电感和电阻仅在传声损失峰值所对应的频率处对材料的传声损失有影响,传声损失峰值随电阻或电感的增大而减小,峰值位置基本不随电阻或电感而改变;外接电路中电阻对传声损失峰值的影响明显弱于电感;复合了压电薄膜型声学超材料的汽车顶板相比于单一钢板压制的汽车顶板具有更好的隔声能力.关键词:隔声性能;声学超材料;压电材料;可调性;有限元方法中图分类号:TB５３５;TB２４文献标识码:A文章编号:１６７４Ｇ９５７X(２０２３)１５Ｇ００４２Ｇ０３SoundInsulationPerformanceofMembraneＧtypeAcousticMetamaterialsBasedonPiezoelectricMaterialsKangJianＧlin,SunWenＧkai,ZhouWenＧjie,ZhongXinＧcheng,GouWei,XuXiaoＧmei(CollegeofAutomobileandTrafficEngineering,NanjingForestryUniversity,JiangsuNanjing２１００３７,China)Abstract:COMSOLsoftwareisusedtostudythesoundinsulationperformance(SIP)ofamembraneＧtypeaＧcousticmetamaterial(MAM)basedonpiezoelectricmaterials,andtheeffectoftheresistanceandinductanceoftheexternalcircuitofthepiezoelectricblockonitsSIPisanalyzed．ThefeasibilityofitsapplicationonautomoＧbileroofisalsodiscussed．ResultsshowthattheSIPoftheMAMwithpiezoelectricblocksissignificantlyimＧproved;theinductanceandresistanceoftheexternalcircuitonlyaffectthesoundtransmissionloss(STL)ofthematerialatthefrequencycorrespondingtothepeakvalueoftheSTL．ThepeakvalueoftheSTLdecreaseswiththeincreaseoftheresistanceorinductance,andthepositionofthepeakvalueoftheSTLbasicallydoesnotchangewiththeresistanceorinductance．TheeffectofresistanceonthepeakvalueofSTLissignificantlyweaＧkerthanthatofinductance．TheautomobileroofwithcompositepiezoelectricMAMhasbetterSIPthantheauＧtomobileroofwithsinglesteelplate．Keywords:Soundinsulationperformance;Acousticmetamaterial;...
