加筋板流固耦合振動分析及試驗研究.pdf

1、武漢理工大學碩士學位論文加筋板流固耦合振動分析及試驗研究姓名：裴智勇申請學位級別：碩士專業(yè)：結(jié)構(gòu)工程指導教師：吳衛(wèi)國翁長儉2001.3.1加筋板流固耦合振動分析及試驗研究ABSTRACTStiffenedplatejswidelyusedjnaeronauticmarinearchitecturaIandmechanicaIfields1nmostcasesstiffenedplateworksinthefluidoritssurfac

2、econtactswithfluidItisnecessarytesearchthevibrationofthestiffenedplatewhichcontactswithwaterbyonesideorbothsidesforpreventingandcontrollingthehappeningoflocalvibration，decreasingtheharmfuInessoflocaIvibrationandenhancing

3、theeffectivenessofstructuresInthisthesisfluidstructureinteractionvibrationofstiffenedplatethatcontactswithwaterbyonesideorbothsidesisprimarilyresearchedThestructurefiniteelementmethodcombinedwiththefluidfiniteelementmeth

4、odispresentedinthisthesisDiscretizedfluidandstructMrskineticequilibriumequations，onthebasisofGalerkinmethodandHamilton’svariationaJprinciple，arededucedandaddedmassmatrixisachievedbyWetModeMethodThematrixoffluidaddedmassi

5、sunsymmetricaccordingtoWetModeMethodThusthegeneralmassmatrixisfulIandunsymmetricLanczosmethodisusedtosolvetheeigenproblemoffullandunsymmetricmatrixinthethesisFinallythefrequenciesandmedalsoffluidstructureinteractionvibra

6、tionareconductedModalexperimentjsdoneinordertojustifythereliabilityoftheorymethodandunderstandthedynamiccharacterofbulkheadstiffenedplateThefrequenciesandmodalsoffluidstructureinteractionvibrationwithdifferentdepthofwate

7、rareachieved1nordertorealizethetheorymethod。muchworkhasbeendoneonprogramdevelopingMorethan5000linescomputerprogramisdevelopedanddebuggedinFORTRANItcanbeusedtocalculatethefreevibrationofplate。beamgrillagesorstiffenedplate

8、structurerespectivelyandplotthecorrespondingmodaldrawingMoreovertheprogramcancalculatethefrequencyandplotthemodaldrawingofplatecontactedwithwaterstiffenedplatecontactedwithwaterbyonesideorbothsides，bulkheadstiffenedplate