加筋板流固耦合振動(dòng)分析及試驗(yàn)研究.pdf

1、武漢理工大學(xué)碩士學(xué)位論文加筋板流固耦合振動(dòng)分析及試驗(yàn)研究姓名：裴智勇申請(qǐng)學(xué)位級(jí)別：碩士專(zhuān)業(yè)：結(jié)構(gòu)工程指導(dǎo)教師：吳衛(wèi)國(guó)翁長(zhǎng)儉2001.3.1加筋板流固耦合振動(dòng)分析及試驗(yàn)研究ABSTRACTStiffenedplatejswidelyusedjnaeronauticmarinearchitecturaIandmechanicaIfields1nmostcasesstiffenedplateworksinthefluidoritssurfac

2、econtactswithfluidItisnecessarytesearchthevibrationofthestiffenedplatewhichcontactswithwaterbyonesideorbothsidesforpreventingandcontrollingthehappeningoflocalvibration，decreasingtheharmfuInessoflocaIvibrationandenhancing

3、theeffectivenessofstructuresInthisthesisfluidstructureinteractionvibrationofstiffenedplatethatcontactswithwaterbyonesideorbothsidesisprimarilyresearchedThestructurefiniteelementmethodcombinedwiththefluidfiniteelementmeth

4、odispresentedinthisthesisDiscretizedfluidandstructMrskineticequilibriumequations，onthebasisofGalerkinmethodandHamilton’svariationaJprinciple，arededucedandaddedmassmatrixisachievedbyWetModeMethodThematrixoffluidaddedmassi

5、sunsymmetricaccordingtoWetModeMethodThusthegeneralmassmatrixisfulIandunsymmetricLanczosmethodisusedtosolvetheeigenproblemoffullandunsymmetricmatrixinthethesisFinallythefrequenciesandmedalsoffluidstructureinteractionvibra

6、tionareconductedModalexperimentjsdoneinordertojustifythereliabilityoftheorymethodandunderstandthedynamiccharacterofbulkheadstiffenedplateThefrequenciesandmodalsoffluidstructureinteractionvibrationwithdifferentdepthofwate

7、rareachieved1nordertorealizethetheorymethod。muchworkhasbeendoneonprogramdevelopingMorethan5000linescomputerprogramisdevelopedanddebuggedinFORTRANItcanbeusedtocalculatethefreevibrationofplate。beamgrillagesorstiffenedplate

8、structurerespectivelyandplotthecorrespondingmodaldrawingMoreovertheprogramcancalculatethefrequencyandplotthemodaldrawingofplatecontactedwithwaterstiffenedplatecontactedwithwaterbyonesideorbothsides，bulkheadstiffenedplate