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1、超磁致伸縮功率超聲換能器熱分析第31卷第6期1162011年2月25日中國電機(jī)工程學(xué)報(bào)ProceedingsoftheCSEEVol.31No.6Feb.25,2011?2011Chin.Soc.forElec.Eng.(2011)06-0116-05中圖分類號：TM153文獻(xiàn)標(biāo)志碼：A學(xué)科分類號：470·40文章編號：0258-8013曾海泉1，曾庚鑫2，曾建斌3，閆明3(1．廈門理工學(xué)院機(jī)械系，福建省廈門市361024；2．華南理工大學(xué)機(jī)械與汽車工程學(xué)院，廣東省廣州市510640；3．沈陽工業(yè)大學(xué)電氣工程學(xué)院，遼寧省沈陽市11
2、0178)ThermalAnalysisofGiantMagnetostrictiveHighPowerUltrasonicTransducerZENGHaiquan1,ZENGGengxin2,ZENGJianbin3,YANMing3(1.DepartmentofMechanicalEngineering,XiamenUniversityofTechnology,Xiamen361024,FujianProvince,China;2.SchoolofMechanicalandAutomotiveEngineering,Sout
3、hChinaUniversityofTechnology,Guangzhou510640,GuangdongProvince,China;3.SchoolofElectricalEngineering,ShenyangUniversityofTechnology,———————————————————————————————————————————————Shenyang110178,LiaoningProvince,China)ABSTRACT:Giantmagnetostrictivematerials’(GGM)attrib
4、utesofhighenergydensityandrelativelyhighthermalconductivitymakeitpossibletobuildlarge-scalehighpowerultrasonictransducers.However,thetransducersusuallyworkunderamagneticfieldofhighintensityandhighfrequency.Theheatfromhysteresislossandeddycurrentlossishuge.Ontheotherha
5、nd,GGMissensitivetotemperature.Thereforeheatanalysisisanimportantpartofthetransducerdesign.Ahighpowerultrasonictransduceranditscoolingsystemweredesignedinthispaper.ThemodifiedJiles-Athertonhysteresismodelwhichincludeeddycurrentlossandanomalouslosswasusedtomodelthebeha
6、viorofGGMinahighpowerultrasonictransducer.Modelparametersweredeterminedwiththeleastsquarefit.Totalhysteresislosswascalculatedwiththemodel.Coolingwaterflowandtemperaturedistributionschemesofthetransducerwereobtainedwithfiniteelementmethod.Calculationresultsagreewellwit
7、htheexperimentalresultsKEYWORDS:highpowerultrasonictransducer;giantmagnetostrictivematerials(GGM);hysteresisloss;finiteelement;temperatureanalysis摘要：超磁致伸縮材料能量密度高，導(dǎo)熱性相對較好，由其制造的功率超聲換能器能做成很大功率，但因?yàn)榇祟悡Q能器總處在高強(qiáng)度高頻率磁場中工作，各種損耗很嚴(yán)重，帶來的基金項(xiàng)目：國家自然科學(xué)基金項(xiàng)目(50875177)；遼寧省教育廳重———————————
8、————————————————————————————————————點(diǎn)實(shí)驗(yàn)室項(xiàng)目(2008S170)；福建省教育廳項(xiàng)目(A09221)；廈門市科技計(jì)劃項(xiàng)目(3502Z20103041)。ProjectSupportedbyNationalNat
