基于电磁屏蔽的箱体设计及有限元仿真的研究

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1、邕箸芗仑肥工学火警HefeiUniversityofTechnology硕士学位论文MASTERDISSERTATIoN②论文题目：基于电磁屏蔽的箱体设计及有限元仿真的研究学位类别：兰曼硕主学科专业：工程领域)机械电于工程作者姓名：盒鹏导师姓名：——王里里垦堡完成时间：——!!!!生!月TheCabinetDesignbaseonElectromagneticShieldingandtheFiniteElementMethodStudyAbstractElectromagneticshieldingisameasuretovalidatether

2、ationalityofEMCdesignandthequalityofelectronequipment，andUSeSANSYSelectromagneticanalysiscanscientificallyevaluatetheelectronequipmentwhetherfulfilsthecriterionorstandardofEMCinfore-and-aftdesign．Thecabinetofelectromagneticshieldinghastwoparts：magnetic-shieldinthelow-frequenc

3、yandelectromagneticshieldinginthehigh-frequency．ThestructuredesignandmaterialdevelopmentaretheprimarymeasurestoimproveelectromagneticshieldingefficiencybyusingANSYSelectromagneticenvironmenttoanalyze．Inthelow·frequency，materialandearthingareprimaryfactor．ThepaperUSeSelectrole

4、ssdepositionNi—Fe··Balloyelectromagneticshieldingcoatingthatisaddedtherareearthelements，andweinvestigatetheelectromagneticshieldingcapabilityofNi·Fe-Balloythroughthechangeofelectromagneticfrequency'thethicknessofmaterialbyANSYSanalysisandtheaddrareearthelementsinnormalcyandsa

5、ltfog，itshowsNi—Fe—Balloynotnolyhasagoodelectromagneticshieldingcapability，butalsohasasuperiorcorrosivecapability．Inthehigh·ffequency’aselectromagneticfrequencyenhances，thekindandthicknessofmaterialhavebecomethesubordinatefactor．ThepaperusesANSYSanalysistostudytheinfluencewhi

6、chtheholeareaandthegapdimensiontotheelectromagnetismleakageinordertoincreaseheatdissipationaswellasdecreasetheweight，thebulk，thecostofthecabinetasfaraspossibleandsolvetheproblemofEMC．111epaperhopestoweightheadvantagesanddisadvantagesinthecabinetdesignofelectromagneticshieldin

7、g，anduselogicalandoptimalcost-effective‘ratiomeasurementtosatisfyEMCoftheelectronequipmentcabinetdesign．Keyword：Cabinet；ElectromagneticShielding；Ni-Fe-BAlloy；ANSYS；插图清单图1．1解决干扰的措施和成本与产品生产进程的关系⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯．．3图2．1机箱屏蔽的不连续示意图⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯．7图2．2凹凸对接方式⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯

8、⋯⋯9图2．3铜对不同频率的理论衰减值⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯lO图2．4铁对不同频率的理论衰减值⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯