Repository at Hanyang UniversityGRADUATE SCHOOL[S](대학원)CIVIL AND ENVIRONMENTAL ENGINEERING(건설환경공학과)Theses (Ph.D.)
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| DC Field | Value | Language |
|---|---|---|
| dc.contributor.advisor | Dong-HoChoi | - |
| dc.contributor.author | 오메르자베이드 | - |
| dc.date.accessioned | 2024-03-01T07:30:27Z | - |
| dc.date.available | 2024-03-01T07:30:27Z | - |
| dc.date.issued | 2021.2 | - |
| dc.identifier.uri | http://hanyang.dcollection.net/common/orgView/200000485479 | en_US |
| dc.identifier.uri | https://repository.hanyang.ac.kr/handle/20.500.11754/188162 | - |
| dc.description.abstract | Railwaysareoneofthemostcommon,economicandefficientmeanoftransportation,whichcanofferasuitablealternativetotrafficcongestioninbigcities.However,inpopulatedareas,groundvibrationsinducedbymovingtrainmaycauseseriesdiscomforttonearbyresidentsandleadtostructuredamage.Thevibrationsfrommovingtrainsatthecontactpointofthewheelandtherailareduetotheself-weightofthetrain(quasi-staticloading)anddynamicinteractionforcesinducedbytrackirregularities.Therefore,theanalysisofthedynamicresponsesofthetrain-track-groundsystemunderquasi-staticloadinganddynamicinteractionloadinginducedbytrackirregularitieshasbecomeafundamentalconcerninrailwayengineeringandplaysanessentialroleintheoptimalrailwaydesign. Inthisthesis,anewsolutionprocedurefortrain-trackinteractionproblemwasinspiredfromtheshortcomingsoftheexistingintersystemiterationmethod.Theproposedmethodwasdevelopedbasedonrigidbodymovement,parallelspatialforcetheoremandalreadyexistingintersystemiterationmethod.Inpredictingthetrack-groundvibrationsinducedbymovingtrains,itisgenerallyassumedthattheirregularitiesoftworailsofatrackareidenticalandfullycorrelated.Thisassumptionleadstoidenticalcontactforcesatthecontactpointofwheelsandrails.Inthepresentwork,theuncorrelatedprofileofthetworailsisconsideredtoinvestigatetheirinfluenceonthetrain-track-groundvibrations.Forthispurpose,athree-dimensional(3D)finiteelementmodelcapableofsimulatinginteractionsbetweenthe3DtrainandthetrackbyusinganonlinearHertzcontactmethodisdeveloped.NonlinearHertzcontactisrepresentedbythetensionlessstiffnessbetweenthewheelsandtherails.Therailsaremodeledas3DEuler-Bernoullibeamelements.Solidbrickelementsrepresentthemodelcomponents,suchasthetrack(otherthanrail)andground. Adetaileddescriptionofaniterativenumericalalgorithmispresentedtoestablishtheintegrationsofthetrainandtracksystem.Thisiterativenumericalalgorithmcancalculatetheresponsesandforcesattheinteractionpointbetweeneachwheelandrailtoincorporatetheuncorrelatedprofileoftworails,insteadofonlyconsideringtheinteractionatthecentroidofthewheelsetaxleandatthecenterofthetrack.Acomparativestudyisconductedbyconsideringvarioustrainspeedsandthreedifferenttrackcases.Theresultsshowthatanincreaseintrainspeedcausesanincreaseingroundvibrationinthecaseofuncorrelatedprofilesoftworailsofatrack.Moreover,theeffectsofcorrelatedanduncorrelatedprofilesoftworailsofatrackareinvestigatedintermsofthetrain-track-groundresponses. | - |
| dc.publisher | 한양대학교 | - |
| dc.title | DynamicResponseAnalysisofCoupledTrain-Track-GroundSystemUnderNon-SymmetricalDynamicInteractionConditions | - |
| dc.type | Theses | - |
| dc.contributor.googleauthor | OmerJavaid | - |
| dc.contributor.alternativeauthor | 오메르자베이드 | - |
| dc.sector.campus | S | - |
| dc.sector.daehak | 대학원 | - |
| dc.sector.department | 건설환경공학과 | - |
| dc.description.degree | Doctor | - |
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