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1.
IntroductionC_shapedbellowsorreferredtoassemi_circlebellowsarewithcomplexconfiguration(Fig .1) .Attheconcaveandconvexjointsoftheshell,forexampleatpointC ,thelatitudeangleψincreasesby 180°abruptly .Soitisthekeytocalculationforbellowsthatmakingupsolutionsexact…  相似文献   

2.
ON THE GENERAL SOLUTION OF CYLINDRICAL SHELL EQUATIONSPeterYiXue(薛毅);XueDawei(薛大为)(ReceivedOct.16,1995)Abstract:Itisprovedmat...  相似文献   

3.
THEGENERALSOLUTIONFORDYNAMICRESPONSEOFNONHOMOGENEOUSBEAMWITHVARIABLECROSSSECTIONJiZhen-yi(纪振义)(AnhuiArchitecturalIndustryColl...  相似文献   

4.
IntroductionU_shapedbellowsareusuallyseeninthepipelinesystem (Fig .1) ,whichareusedtocompensatefortheaxialmovement,therotationandthedeflectionofthepipelinesduetothethermalaction ,thebaseunequalsettlementsandtheinstallationerrors.Theaxisymmetricaldeformatio…  相似文献   

5.
IntroductionTheinitiationofreliabilitytechniqueswasduetotheexistenceoflargeamountofuncertaintiesinengineering .Accordingtothedifferencesintheproducedcauseandphysicalmeaning,uncertaintiesmaybedividedgenerallyintothreetypes:randomness,fuzzinessandunascer…  相似文献   

6.
IntroductionBellows[1,2 ]isashellofrevolutionwithwrinkledmeridian ,usuallynamedafteritsmeridionalshapeinaperiodoritsprofileofaconvolution ,suchasΩ_shapedbellows,C_shapedbellows,U_shapedbellowsandsoon .Theyarewidelyusedinmanyfields,forexample ,theelasticsense…  相似文献   

7.
THEDIFFERENTIALSOLUTIONTOTHEFLYINCLOCUSEQUATIONOFTHESHOTANDITSAPPLICATIONLiuXiao-xiang(刘小湘)  (XiangtaninstituieofMachineryand...  相似文献   

8.
IntroductionChaplyginpointedoutthatLindel fmadeabigmistakeinhispaper“Rollingofrotatingbodyonhorizontalplane” (ActaSocietatisScientiarumFennicae ,Vol.2 0 ,No .3 ) [1].ItwascalledLindel f’smistake .Inthelasthundredyears,nobodyputforwardLindel f’swork .However,Chaply…  相似文献   

9.
ATHREE-DIMENSIONALSOLUTIONOFTHEPROBLEMOFTHREEFIXEDCENTRES¥QinYiping(覃一平)NieZhaoming(聂昭明)(YunnanObservatory,AcademiaSinica,Kun...  相似文献   

10.
IntroductionBurgers’equationisoneofveryimportantfluidequations.Itsdynamicalbehaviorisratherthancomplexityowingtothenonlinearterm .Temanetal.[1] studiedtheexistenceofaglobalattractor,inertialmanifoldandapproximateinertialmanifoldassociatedwithdynamicalsys…  相似文献   

11.
IntroductionTheequationsandthesolutionproceduresofthefinite_element_displacement_perturbationmethod (FEDPM)forthegeometricnonlinearbehaviorsofshellsofrevolutionsubjectedtopurebendingmomentsorlateralforcesinoneoftheirmeridionalplaneswerepresentedin (Ⅰ ) .…  相似文献   

12.
IntroductionLetA ∈Cn ,n,andbepartitionedasfollows:A =A11A12 …A1kA2 1A2 2 …A2k…………Ak1Ak2 …Akk,( 1 )whereAii∈Cni,ni,1 ≤i≤k ,∑ki=1ni=n ,Aii( 1 ≤i≤k)arenonsingular.Inmostpracticalapplications,thematricesAijaresparseandmanyoftheblockmatricesarezero .Definition 1 IfB =(bij) =(‖Aij‖ ) k×…  相似文献   

13.
IntroductionSincethepioneeringworkonnonlinearstabilityofplanarincompressiblesteadyflowbyArnol’d ,agreatdealofattentionhasbeenpaidtononlinearstabilityoffluid (especiallygeophysicalfluid)motion ,andmuchprogresshasbeenmade.AsmentionedinRef.[1 ] ,intherealatmos…  相似文献   

14.
IntroductionInthesystemofnonlinearoscillating ,periodicmotionisofprimeimportance .Butexistenceofperiodicsolutionsisaverydifficultquestion .Luckilythereexistsomekindsofperiodicsolutioninactualphysicalsystems .Therefore ,weusuallyconcentratedourattentionont…  相似文献   

15.
IntroductionFractalinterpolationmethodisnumericalmethodinthefractalgeometryusingiteratedfunctionsystem (IFS) ,itisdifferentfromtraditionalinterpolationmethod .M .F .Barnsely[1,2 ]firstgavethismethodandresearchedthecontinuityandthefractaldimensionofinterpolat…  相似文献   

16.
ThefollowingLemmastated (in :AppliedMathematicsandMechanics (EnglishEdition) ,2 0 0 1 ,2 2 ( 1 1 ) :1 3 52 -1 3 56)wasappliedtodescribetheasymptoticbehaviorsofsolutionsofaclassofreaction_diffusionequation .Onaccountofthespecialpropertyofthesupersolution(i.e .,anonzerosolution…  相似文献   

17.
IntroductionMostofthefiniteelementsareconstructedbyusingdisplacementfiniteelementmethod .Bysupposingthedisplacementfunctionsintheelement,andusingtheprincipleofminimumpotentialenergy,theelementstiffnessmatrixcanbeformulated .Ifthedisplacementfunctioninth…  相似文献   

18.
1TheFormulaofCombinedHybridMethodAfterweight_averagingboththeprimalandthedualsaddle_pointproblemswhichhavethesamefunctionalsp...  相似文献   

19.
IntroductionThestudyofsymmetryandconservedquantityofmechanicalsystemisanimportanttopicinmathematics,mechanicsandphysics .ThemoderntheoriesofsymmetryandconservedquantityofmechanicalsystemincludeNoethersymmetrytheoryandLiesymmetrytheory .In 1979M .Lutzkyando…  相似文献   

20.
IntroductionBeltramiflowisaspecialkindofflow .Itsvorticitydirectionisparalleltoitsvelocitydirectioneverywhere .Moreover,itsvelocityandvorticitysatisfythelinearHelmholtzequation .Infact,itisakindofrelativelysimpleflow .Buttherearemanycomplexphenomenahidden…  相似文献   

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