资源描述：
《elasto-plastic analysis》由会员上传分享，免费在线阅读，更多相关内容在学术论文-天天文库。
1、TheoreticalandAppliedFractureMechanics55(2011)131–139ContentslistsavailableatScienceDirectTheoreticalandAppliedFractureMechanicsjournalhomepage:www.elsevier.com/locate/tafmecElasto-plasticanalysisofinfluencesofbonddeformabilityonthemechanicalbehavioroffibernetworksaa,⇑bbJ.X.Liu,Z.T.Chen,H.
2、Wang,K.C.LiaDepartmentofMechanicalEngineering,UniversityofNewBrunswick,15DineenDrive,Fredericton,NB,CanadaE3B5A3bDepartmentofChemicalEngineering,UniversityofNewBrunswick,2GarlandCourt,Fredericton,NB,CanadaE3B6C2articleinfoabstractArticlehistory:Micromechanicalmodelingofthree-dimensional(
3、3D)fibernetworksisperformedbyreducingthewebAvailableonline28April2011structuretofibersegmentsandfiber–fiberbondstoexploretheinfluenceoffiber–fiberbonddeformabi-lityonfibernetwork’selasto-plasticity.ThefibersegmentbetweeneverytwoadjacentbondsisdescribedKeywords:byaTimoshenkobeamelement,whilefiber–fi
4、berbondsaretakenasadifferenttwo-nodeelementduetoFibernetworktheextremelylargeheight-to-spanratio.Thisovercomestherigid-bondassumptionemployedbymostNetworkmodelingpreviousnetworkmodels,providingthefeasibilitytobuildtherelationshipbetweenbondingconditionBonddeformabilityandglobalmechanical
5、properties,resultingina3DnetworkstructureandabletoaccommodatecurledElasto-plasticityfibers.Bothfibersandbondsareassumedtobeelasto-plasticanddescribedbythebilinearkinematicNewton–Raphsonmethodhardeningmodel.DeformationofthenetworkwithloadincreasingissimulatedbytheNewton–Raphsonmethod.Numeri
6、caltensiletestsshowreasonableresultsandagreequalitativelywithexperiments.Theinfluenceofbonddeformabilityonthemechanicalbehaviorofthenetworkisdiscussedindetail.Ó2011ElsevierLtd.Allrightsreserved.1.IntroductionLotsofnetworkmodelswithrigidbondshavebeendevelopedforsimulatingrandomfiberwebs[3,1
7、0,22]).AsystematicreviewFibernetworkscomposedofrandomlydistributingfibersaboutnetworkmodelsorequallylatticemodelsfordifferentmate-[10,20]arestudiednumericallywithnecessarysimplifications.rialscanbefoundin[23].ForpapersheetscomposedofrandomTypicalexamplesarepapersheetsandsom
