Fluid-structure interaction in civil engineering.pdf

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1、Fluid-structureinteractionincivilengineeringE.Rank,D.Scholz,A.HalfmannLehrstuhlfur¨Bauinformatik,TechnischeUniversitat¨Munchen,¨Germanye-mail:rank,d.scholz,halfmann
@bv.tum.deM.Gluck,¨M.Breuer,F.DurstLehrstuhlfur¨Stromungsmechanik,¨Universitat¨Erlangen-Nurnber¨ggl

2、ueck,breuer,durste-mail:
@lstm.uni-erlangen.deAbstractThepresentpaperisconcernedwithanumericalsimulationprocedureforfluid-structureinter-actionproblemsoccurringincivilengineering.Thestructuralsimulationperformedbythefiniteelementmethodiscoupledwithafinitevolumeflowsolve

3、rviaapartitionedsolutionapproach.Specialemphasisisputontheappropriatediscretizationinthestructuralsimulationsapplyingclassical-versionFEMandadvanced-elements.Resultsforapracticallyrelevantapplicationofamobiletentroofrepresentinglightweightmembranestructuresaredisc

4、ussedandcomparedwithcorrespondingexperimentalmeasurementscarriedoutinawindtunnelofacooperationpartner.Forafootbridge,theadvantagesofdiscretizationwiththree-dimensional-elementsarepointedout.Keywords:fluid-structureinteraction,partitionedsolution,FEM,-version,lightw

5、eightstructures,windtunnel.1IntroductionInvariousfieldsofcivilengineeringtheinteractionoffluidandstructureplaysanimpor-tantrole.Withthecontinuousincreaseofcomputerpower,theseproblemshaveattractedmoreandmoreinterestincomputationalmechanics.Mostpublishedapproachesuseapa

6、rtitionedsolutionscheme,wherespecializedprogramsforfluidandstructuraldynam-icsarelooselycoupledinaframealgorithm.Thisapproachbasicallytransfersineachtimestepsurfacepressureandshearforcesfromthefluidtothesurfaceofthestructureandupdatesthegeometryofthefluiddomainaccordin

7、gtothecomputedstructuraldis-placement.Variousversionsofthisbasicapproachrangingfromanexplicittimesteppingtoafullyimplicitcouplinghavebeenproposed[1]-[4].Especiallytwolargegroupsofconstructionsincivilengineeringarestronglyaffectedbyfluid-structureinteractionphenomena.

8、Thefirstgrouparelightweightconstructionswithoutorwithlowbendingstiffness,e.g.membranes.Here,classical,dimensionallyreduced-elementscanbeef