环向加肋对充液圆柱壳振动特性的影响分析.pdf

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1、第19卷第3期船舶力学V01．19No．32015年3月JournalofShipMechanicsMar．2015ArticleID：1007—7294(20l5)03—0294—09EffectofStiffeningParametersonVibrationCharacteristicsofFluid-filledCylindricalShellswithRing-stiffenerLIUXiao—wan，LIANGBin’，LIRong，XUHong-yu，ZHANGWei(1．CivilEngineeringScho

2、ol，HenanUniversityofScienceandTechnology，Luoyang471023，China；2．DepartmentofMeehanica]Engineering，KyushuInstituteofTechnology，Kitakyushu—city，804-8550，Japan)Abstract：Thispaperinvestigatestheeffectofstiffeningparametersonvibrationoffluid-filledcylin—dricalshellswithri

3、ng—stifener．BasedontheLove’sshelltheoryandwavepropagationapproach，theshelleigenvaluegoverningequationisderivedwiththeconsiderationoffluidprope~y．ThentheCOH—pledfrequencyofthecylindricalshellwithdiferentboundaryconditionsisobtmned．Thepresentanal-ysisisvalidatedbycomp

4、aringresultswiththoseintheliterature．Theinfluencesofstiffeningparam—etersonthecoupledfrequenciesoffluid—filledcylindricalshellsareillustratedbyexamples．Stiff-enerhasconsiderableeffectsonthevibrationwiththeincreaseofstiffenerheightandnumber，andrelativelyweakimpactwit

5、hstiffenerforms．Theeffectofstiffenersonthefrequencieshavemainlyman—ifestedintheeaseoflargecircumferentialwavenumbers．Thestiffenerheightshowscomparativelybetterstiffenedeffectonvibrationperformance．Keywords：ring-stiffener；fluid-filled；cylindricalshell；coupledvibratio

6、n；wavepropagationapproachCLCnumber：TB535．1Documentcode：Adoi：10．3969／j．issn．1007—7294．2015．03．0070IntroductionCylindricalshellsfilledwithfluidarethepracticalelementsofmanytypesofengineeringstructures，suchasaeroplanes，shipsandconstructionbuildings．Theshellsarealwaysst

7、iff-enedbyringsinordertoinereaseitsstiffnessandstrengthefectively．Andthestiffenerscanalsoaffectthestaticanddynamiccharacteristicsofshellscontainingstaticfluids．Therefore，thestructuralanalysesofringstiffenerarerequired．However．duetothemathematicaldifficul—ties．therea

8、refewresearchesonthevibrationbehavioroffluid—filledcylindricalshellswithring—stiffener．ZhangIl】studiedtheeffectsofshellparametersandbounda