核殼型顆粒復(fù)合材料等效介電常數(shù)預(yù)測(cè)及吸波涂層優(yōu)化設(shè)計(jì).pdf

1、武漢理工大學(xué)碩士學(xué)位論文核殼型顆粒復(fù)合材料等效介電常數(shù)預(yù)測(cè)及吸波涂層優(yōu)化設(shè)計(jì)姓名：彭志軍申請(qǐng)學(xué)位級(jí)別：碩士專業(yè)：固體力學(xué)指導(dǎo)教師：翟鵬程20040501AbstractInthispaperwehavedoneresearchontheeffectivepermittivityofellipsoidinclusionsandsphericalcore—shelltypeinclusions，BShagthemethodofmicrome

2、chanicstheory；sequentiallyoptimizeddesignofabsorbingcoatingFirst，theproblemofelectromagneticfieldofetlipsoidtypeparticleisstudied，andeffectivepermittivityforecastingformulaofthisparticleisdevelopedBaseontheresearch，theef

3、fectofparticleshapeoneffectivepermittivityisgained。Usingthemethodofmicromechanicstheoryandthefiniteelementmethod，theproblemofelectromagneticfieldofsphericalcore—shelltypeparticleisstudiedandeffectivepermittivityforecasti

4、ngformulaofthisparticleiSinduced；theforecastingresultsisconfirmedbythefiniteelementmethod；theeffectofmaterialparameterandgeometryparameterOiltheeffectivepermiRivityisstudiedBaseontheeffectivepermittivityforecastingformul

5、aofsphericalcoreshelltypeinclusions，thetheoryframeofoptimumdesignofabsorbingcoatingisconstructed；theoptimizationofsinglelayeranddoublelayersisdoneThestudyresultsdisplay：theparticleshapetreridstoneedlemore，theeffectiveper

6、mittivityisbiggerwhenthevolumeofparticleisthesameTheparticleshapetrendstopennymore，theeffectivepermittivityisbiggerwhenthevolumeofparticleisthesameThedimensionofparticledoesn’taffecttheeffectivepermittivitywhentheshapeof

7、particleisequalOnconditionthatthevolumeofparticleisequal，theeffectivepemfittivityofpennyshapeparticleisthebiggest，thatoftheneedleshapeissecondandthesphericalshapeiSthelastWhenthethickerofshellisconstantand攮eradiusofcorei

8、sbiggertheeffectivepermiRivityisless飄eeffectivepermittivitywillchangeacutelywhenthethickerofshellisclosetotheradiusofcore；withtheradiusofcoreincreasing，theeffectivepermittivityofcore—shelltypeparticlewillapproachthatofno