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1.
IntroductionU_shapedbellowsareusuallyseeninthepipelinesystem (Fig .1) ,whichareusedtocompensatefortheaxialmovement,therotationandthedeflectionofthepipelinesduetothethermalaction ,thebaseunequalsettlementsandtheinstallationerrors.Theaxisymmetricaldeformatio… 相似文献
2.
IntroductionC_shapedbellowsorreferredtoassemi_circlebellowsarewithcomplexconfiguration(Fig .1) .Attheconcaveandconvexjointsoftheshell,forexampleatpointC ,thelatitudeangleψincreasesby 180°abruptly .Soitisthekeytocalculationforbellowsthatmakingupsolutionsexact… 相似文献
3.
王凡彬 《应用数学和力学(英文版)》2000,21(11):1338-1340
Therearemanydocumentsthatdiscussblow_upofthesolutionsfortheinitial_boundaryvlueproblemsofthenonlinearSchr dingerequations,suchaspaper [1 ] .Butthepaper [1 ]hasoneweakpoint,thatis,itcannotunitediscussionforblow_upofthesolutionsfortheinitial_boundaryvalueprobl… 相似文献
4.
General solution for u-shaped bellows overall-bending problems 总被引:1,自引:0,他引:1
IntroductionU_shapedbellows,anelasticelement,showninFig .1 ,isusedinmanywaysandingeneralsubjecttopressure ,axialforce ,lateralforcesandmoments.Inresearch ,itisusuallysimplifiedintoringshellsandringplates.TheaxisymmetricalproblemsofU_shapedbellowshavebeendee… 相似文献
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IntroductionOfallthefiber_reinforcedcompositematerials,theshort_fibercompositematerialnotonlystrengthensthematrixbutavoidsdefectionsofthelong_fibercompositematerialaswell.Themicro_mechanicsaboutitsuchasfracture ,fatigueanddamageisverycomplex .Intheprevi… 相似文献
6.
IntroductionItiswell_knownthatpiezoelectricmaterialsproduceanelectricfieldwhendeformedandundergodeformationwhensubjectedtoanelectricfield .Thecouplingnatureofpiezoelectricmaterialshasattractedwideapplicationsinelectric_mechanicalandelectricdevices,suc… 相似文献
7.
IntroductionBellows,ashellofwrinkledmeridianofrevolution ,hasbeingincreasinglyusedinmodernequipmentasanelastic_sensitiveelementandaflexiblejoint.Theformerisusuallysubjectedtolargedisplacementsatitsends,andthelattermaypartlyenterintoplasticstate .Hence ,b… 相似文献
8.
IntroductionIntheactivitiessuchastheaerospaceengineeringheatprotection[1,2 ],thelarge_scaleconcretepouring ,thechemicalproduction ,thepowdermetallurgyandthefiresafetyengineering[3,4],thereisonekindofnonlinearparabolicdistributedparametercontrolsystemwithmovi… 相似文献
9.
IntroductionTheelastichalf_spacetheoryoffoundationvibrationandthestudyofsoil_structureinteractionproblemhavebeenthesubjectofintensiveresearchinthecivilengineering .SinceLucoetal.[1]summarizedthevibrationofacircularrigidfoundationrestingonanelastichalf_s… 相似文献
10.
GLOBAL SOLUTION OF THE INVERSE PROBLEM FOR ACLASS OF NONLINEAR EVOLUTION EQUATIONSOF DISPERSIVE TYPE
IntroductionItiswell_knownthatpseudo_parabolicequationwithprincipalpartut -uxxthasbeenstudyingrecently ,becausethereexistswidephysicalbackgroundforthisclassofequations.[1 ]studiedthemulti_dimensioninverseproblemforthefollowingclassofnonlinearevolutionequ… 相似文献
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STUDY FOR THE BIFURCATION TOPOLOGICAL STRUCTURE AND THE GLOBAL COMPLICATED CHARACTER OF A KIND OF NONLINEAR FINANCE SYSTEM(Ⅱ) 总被引:1,自引:0,他引:1
IntroductionChaoticistheinherentrandomnessinthedefinitesystem .Thedefinitenessiscausedbythesysteminternalsbutnotbytheexternaldisturbance,whiletheinherentrandomnessistheirregularanddifficult_to_be_predictedbehaviorofthesystem .Whatismostattractiveofthec… 相似文献
12.
NUMERICAL SIMULATION OF ORIENTATION DISTRIBUTION FUNCTION OF CYLINDRICAL PARTICLE SUSPENSIONS 总被引:2,自引:0,他引:2
IntroductionThecylindricalparticlesuspensionsinvolvesomedifficultproblemsinthetheoreticalresearchofmultiphaseflowandnon_Newtonianflow ,andhavewideapplicationintheindustrialengineering .Forexample,duringtheprocessingofsomematerials,primitivematerialprope… 相似文献
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IntroductionThemixingflowfieldresultingfromasonicgaseousinjectioninjectedtransverselyintoasupersonicfreestreamisencounteredinmanyfieldssuchasrocketmotorthrustvectorcontrolsystems,supersoniccombustion ,high_speedflightvehiclereactioncontroljets,andgas_t… 相似文献
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STUDY FOR THE BIFURCATION TOPOLOGICAL STRUCTURE AND THE GLOBAL COMPLICATED CHARACTER OF A KIND OF NONLINEAR FINANCE SYSTEM(Ⅰ) 总被引:1,自引:0,他引:1
IntroductionChaoticistheinherentrandomnessinthedefinitesystem .Thedefinitenessiscausedbythesysteminternalsbutnotbytheexternaldisturbance[1- 4],whiletheinherentrandomnessistheirregularanddifficult_to_be_predictedbehaviorofthesystem[5 ,6 ].Whatismostattractive… 相似文献
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IntroductionWhenamovingbody (forexample:ship)isinmotionontheocean ,aV_shapedshipwaveappearsbehindthebody .Inthisarticle,wewilldiscusstheshapeofthevelocityfieldandtheV_shapedshipwave .Atfirst,Ref.[1]studiedthequestionsofshipwavesonanincompressibleinviscidflui… 相似文献
16.
《应用数学和力学(英文版)》1999,(6)
IntroductionInthiswork,westudytheproblemsoftheboundednesanduniformboundednesofsolutionsofnon_autonomousdiferentialequationsof... 相似文献
17.
CATASTROPHE FRACTURE OF THIN-WALL PRESSURE TUBES 总被引:1,自引:0,他引:1
IntroductionThecylindricaltubeisoneofthemostimportantelementsofstructuresusedinengineering .Thin_wallcylindricaltubes,drivenradialoutwardbyhighexplosivedetonationpressure ,commonlyexpandtotwicetheiroriginaldiameterspriortofractureandsuddenlybreakup .And… 相似文献
18.
1 TheFlowModelofPower_LawFluidinRadicalFractalReservoirThetransientflowofpower_lawfluidinradicalfractalreservoirisstudiedinRef.[1 ] ,andanalyticalsolutionofLaplacespaceisderived .InRef.[2 ] ,thetransientellipticalflowisresearchedonmodelofexpandingrectangle .T… 相似文献
19.
陈松林 《应用数学和力学(英文版)》2002,23(5):618-618
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
20.
IntroductionForcomputationoftheviscouscompressibleflowstheNavier_Stokesequationsaregenerallyrepresentedintheconservationlawformasahyperbolicsystem .Lackingthemathematicaltooltoanalyzethisnonlinearsystem ,thenumericalmethodsusedinsolvingthenonlinearhype… 相似文献