Title of article
ApplicationlimitsoffiniteelementmodelsforsimulationofshocktransferprocessesinconcretestructuresOriginalResearchArticle
Author/Authors
NorbertJ.Krutzik، نويسنده , , JosefEibl، نويسنده ,
Issue Information
روزنامه با شماره پیاپی سال 2005
Pages
10
From page
1789
To page
1798
Abstract
Shocksonbuildingstructuresduetoimpactloads(dropofwreckageandheavymassesfromaccidents,transportoperations,explosions,etc.),especiallyincaseofapostulatedaircraftcrash,mayleadtofeasibilityproblemsduetohigh-inducedvibrationsandlargeexpendituresatsafety-relatedsystemsaccommodatedinsidethebuildingstructures.Arationalandcost-effectivequalificationofthefunctionalityofsuchsystemsrequiresthepredictionofreliableinformationaboutthenatureofstructuralresponsesinducedbyimpactloadinginthecorrespondingregionsofthestructure.
Theanalyticderivationofrealisticandreliablestructuralresponsesrequirestheapplicationofadequatemathematicalmodelsandmethodsaswellasacriticalevaluationofallfactorsthatinfluencetheentireshocktransmissionpath,fromtheareaofimpacttothesiteofinstallationoftheaffectedcomponentorsysteminthestructure.Despiteextensivestudiesandcomputationalanalysesofimpact-inducedshocksperformedusingfiniteelementsimulationmethod,limitedandinsufficientexperimentalresultstodatehaveprecludedacompleteinvestigationandclarificationofseveral“peculiarities”inthefieldofshocktransmissioninfiniteelementmodels.
ThisrefersmainlytothedivergenceofresultsobservedusingFEmodelswhennotconsideringatherequiredFEelementdiscretizationratioaswellastotheattenuationandscatterbehaviorofthedynamicresponseresultsobtainedforlargebuildingstructuresandgivenlargedistancesbetweentheloadimpactapplicationareasandthecomponentanchoringlocations.Thecauseforsuchdivergencesarerelatedtoseveraluptonownotclarified“phenomena”ofFEmodelsespeciallythelow-passfilteringeffectsanddispersioncharacteristicsofFEmodels.
Journal title
Nuclear Engineering and Design Eslah
Serial Year
2005
Journal title
Nuclear Engineering and Design Eslah
Record number
894958
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