含非均勻材料的層合結(jié)構(gòu)體中界面上的運動裂紋問題.pdf

1、寧夏大學碩士學位論文含非均勻材料的層合結(jié)構(gòu)體中界面上的運動裂紋問題姓名：郭玉彬申請學位級別：碩士專業(yè)：應(yīng)用數(shù)學指導(dǎo)教師：楊曉春200803012j。愛人學碩上學位論文英文摘受AbstractWiththerapiddevelopmentoftechnology，materialsaremoreandmorerequiredstrictlyUsuallyasinglematerialcan’tsatisfythemultifunction

2、aldemandsinmanyengineeringapplicationsOntheotherhandthefunctionallygradedmaterial，Sdevelopmentprovesthatthismaterialcanreducethestress，con—vergence，andenhancethefracturetoughnessAccordinglythefunctionallygradedmaterialis

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4、cmaterial，thisthesisconsidersthecrackmovingalongtheinterfaceofsandwichmaterialsincludingnonhomogeneouscompositelayerTherearefivespartsinthepresentpaperThefirstpartsummarizestheadvanceofcompoundmate—rials，theinvestigation

5、situationofinterfacemechanics，themethodsforstudyingfracturemechanics，thebasicequationsandthemaincontentdiscussedinthispaperAmovingmode—IIIcrackalongtheinterfaceofsandwichmaterialsincludingfunctionallygradedlayerasthesubs

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7、／piezomagneticmaterialsisstudiedinthefourthpartIntheabovethreeparts，basedontheassumptionthattheeffectofthecracksurfaceoverlappingverynearthecracktipsisnegligible，F(xiàn)ouriertransformsareusedteducetheproblemtOthesolutionofapa

8、irofdualintegralequationswhicha佗thenreducedtOaFredholmintegralequationofsecondkindbytheCopson—SihmethodFinallytheinfluencesofgradedparameterthcmovingve!ocityofthecrackandgeometricalsizcOndynamicstressintensityfactorarean