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1、超磁致伸缩功率超声换能器热分析_曾海泉DOI:10.13334/j.0258-8013.pcsee.2011.06.001第31卷第6期1162011年2月25日中国电机工程学报ProceedingsoftheCSEEVol.31No.6Feb.25,2011?2011Chin.Soc.forElec.Eng.(2011)06-0116-05中图分类号：TM153文献标志码：A学科分类号：470·40文章编号：0258-8013超磁致伸缩功率超声换能器热分析曾海泉1，曾庚鑫2，曾建斌3，闫明3(1．厦门理工学院机械系，福建省厦门市361024；2．
2、华南理工大学机械与汽车工程学院，广东省广州市510640；3．沈阳工业大学电气工程学院，辽宁省沈阳市110178)ThermalAnalysisofGiantMagnetostrictiveHighPowerUltrasonicTransducerZENGHaiquan1,ZENGGengxin2,ZENGJianbin3,YANMing3(1.DepartmentofMechanicalEngineering,XiamenUniversityofTechnology,Xiamen361024,FujianProvince,China;2.Scho
3、olofMechanicalandAutomotiveEngineering,SouthChinaUniversityofTechnology,Guangzhou510640,———————————————————————————————————————————————GuangdongProvince,China;3.SchoolofElectricalEngineering,ShenyangUniversityofTechnology,Shenyang110178,LiaoningProvince,China)ABSTRACT:Giantmag
4、netostrictivematerials’(GGM)attributesofhighenergydensityandrelativelyhighthermalconductivitymakeitpossibletobuildlarge-scalehighpowerultrasonictransducers.However,thetransducersusuallyworkunderamagneticfieldofhighintensityandhighfrequency.Theheatfromhysteresislossandeddycurre
5、ntlossishuge.Ontheotherhand,GGMissensitivetotemperature.Thereforeheatanalysisisanimportantpartofthetransducerdesign.Ahighpowerultrasonictransduceranditscoolingsystemweredesignedinthispaper.ThemodifiedJiles-Athertonhysteresismodelwhichincludeeddycurrentlossandanomalouslosswasus
6、edtomodelthebehaviorofGGMinahighpowerultrasonictransducer.Modelparametersweredeterminedwiththeleastsquarefit.Totalhysteresislosswascalculatedwiththemodel.Coolingwaterflowandtemperaturedistributionschemesofthetransducerwereobtainedwithfiniteelementmethod.Calculationresultsagree
7、wellwiththeexperimentalresultsKEYWORDS:highpowerultrasonictransducer;giantmagnetostrictivematerials(GGM);hysteresisloss;finiteelement;temperatureanalysis摘要：超磁致伸缩材料能量密度高，导热性相对较好，由其制造的功率超声换能器能做成很大功率，但因为此类换能器总处在高强度———————————————————————————————————————————————高频率磁场中工作，各种损耗很严重，带来
8、的基金项目：国家自然科学基金项目(50875177)；辽宁省教育厅重点实验室项目(2008S170)；福建省教育厅项目(A
