三維特殊雜交應力元分析層合板自由邊應力.pdf

1、中國科技大學博士學位論文三維特殊雜交應力元分析層合板自由邊應力姓名：趙奉東申請學位級別：博士專業(yè)：固體力學指導教師：田宗漱2001.9.1!!盟型!笙型壟蘭墮絲!!!生望!一一一——Abstract111recel／tyearsrapidplogresshastakenplaceinindustlMulilizationlofCOlllpnsile8SpeciaIIv1aminalesnradeupofconlposilemalelia

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11、ybridslressfiniteelementI／13ofI，ucking’sisopaameleiInthechaplel4onekindofI2一nodeand8nodespeciaf3dinlealionaIhybridstressfiniteelelnentbasedOilamodifiedconlplenlentalYenergypiinciplewhichClllllahIsatraclion—freeplanarsurf

12、acewasdevelopedThestressassumptionsatisfiestilehonlogeneousequiliblinllleqlationsineachlayer，thecoatintlityoftransversestress仃：，fY=andrKm1edil、ectimlzwithintheentirelaminate，thetraction—fleeboundaryconditionovertileplana

13、rstirfaceandtilestresseso，f，andr，assumedtoIrezeroatfirebottoinsurfaceofIheelentenlTheinterlayeTshessdistiibutionoflaminatedCOlnpositeswithatraction—fleeplaneSillfacewasanalysedSingulmbehaviordoesriotexisthithechapter5，ti

14、le3dimensionalstressdistributionarollnd1ectangularholewitlrrotmdedc(“aerswasanalysedbyusingthecombinationoftwokindsofspecial3dimensionalhyblidstresselelnents——onecontahrsatraction—fieecylindricalSLIIfaceaadanothelcontain