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1.
The effects of blood viscoelasticity on the pulse wave in arteries   总被引:1,自引:1,他引:0  
IntroductionThatthebloodhasviscoelasticpropertiesisawell_knownfact.TheresearchesforthebloodviscoelasticitybyG .B .Thurston[1~4]andS .Chien[5 ]showthatthebloodnotonlyappearstheviscoelasticityinvariousoscillatorybloodflows,butalsohasquitestrongelasticityinsome…  相似文献   

2.
IntroductionThestochasticoptimalcontrolproblemsofreflecteddiffusionprocesseshasbeenconsideredbysomemathematicians,forinstance ,P .L .Lionsin [1 ] ,andJ.L .MenaldiandM .Robinin[2 ] .Inthispaper,wewillconsiderastochasticoptimalcontrolproblemofreflecteddiffusionswit…  相似文献   

3.
IntroductionAnumberofmaterialsinengineeringcanbeclassifiedinthecatalogofviscoelasticity ,includingrock ,soil,polymer,andER MRmaterialsetc .[Christensen 1 982 [1],TAO 1 999[2 ]] .Thedynamicanalysisofviscoelasticproblemsisrelatedtothetimedependentsolutions.Eventhoughdi…  相似文献   

4.
IntroductionInengineeringtechnology,thebendingproblemofelasticthinplatehasimportantpracticalsignificance,andalotofresultshavebeenobtained.Becausetheproblemsofeachedgespointsupportedarecomplexer,therearefewresultsoftheproblems.Inthepaper[1],themethodofsup…  相似文献   

5.
IntroductionMoreandmoreproblemsinscienceandengineeringhaveconcernedthestabilityanalysisoftheviscoelasticstructuresduetotheirbroadapplications .In [1]CederbaumandMondappliedthemultiple_scalesmethodtotreatstabilityofaviscoelasticcolumnunderaperiodicaxiall…  相似文献   

6.
1 IntroductionandPreliminaryWhentheplasticconstitutiveequationatfinitestrainisdiscussed ,thefirstthingtodoistodefineareasonableplasticstrainratewhichisconnectedwiththeproblemofdecompositionofdeformationintoelasticandplasticparts .Inthelatestyearstherea…  相似文献   

7.
IntroductionCrack_lineanalysismethodwasoriginallyproposedbyAchenbachandLi[1]andwasfurtherstudiedbyGUOandLI[2 ].However,theearliercracklinefieldanalysismethodsolvestheproblembymatchingaspecificsolutionofplasticfieldnearcracklinewithelasticsingularKfieldne…  相似文献   

8.
Nonlinear vibration of circular sandwich plate under the uniformed load   总被引:3,自引:1,他引:2  
IntroductionSofar,onlyafewpeoplehavestudiedthelargedeflectionproblemsofsandwichplatesandshellsbecauseofthedifficultyofnonlinearmathematics.LiuRenhuaihasdonemuchtofindaseriesofresultswiththevalueofapplicationinengineeringpractice[1~5].Author[6,7]hadtheiniti…  相似文献   

9.
IntroductionThedegeneratedisoparametricshellelementhasbecomeincreasinglypopularinpracticalengineeringinawiderange.ThisgeneralshellelementwasoriginallyintroducedbyAhmadetal[1]forthelinearanalysisofmoderatelythickshells .Itwasdegeneratedfromathree_dimensi…  相似文献   

10.
IntroductionTheflowtheoryanditsapplicationoffluidsflowinafractalreservoirhavecontinuallygonedeepintostudysinceChangandYortsos[1]builttheflowmodeloffluidthroughafractalreservoir.TONGDeng_ke[2 ]presentedtheexactsolutionanditspressurecharacteristicsfortheva…  相似文献   

11.
General solutions of coupled thermoelastic problem   总被引:1,自引:0,他引:1  
IntroductionWhentheheatconductionequationinvolvesthetermofdeformationandthermoelasticequationscontaintemperature,thiskindofproblemiscalledcoupledthermoelasticproblem,whichtemperaturefieldandelasticfieldmustbesolvedsimultaneously[1,2].Ingeneral,theequatio…  相似文献   

12.
IntroductionAtpresent,theresearchonvariationalinequalitiescausedbyelasticitywithfrictionarestillrestrictedtotheequivalentmaximumorminimumenergyprinciples .Somefamousexperts,GUOYou_zhong[1],ZHOUShu_zhi[2 ],G .F .CareyandJ.T .Oden[3]andJ.T .OdenandL .Campos[4 ],allhav…  相似文献   

13.
IntroductionThepersistenceproblemofaLogisticpopulationinapollutedenvironmentwasstudiedinpaper [1 ] .Butonlyonespecieswasundertheconsiderationinthepaper.Infact,anypopulationinactualbiologicalsituationsmustbelivingonotherpopulations .AsimpleGallopin’sresour…  相似文献   

14.
IntroductionSolvingnonlinearequationsisalwaysaveryinterestingsubjectformathematicianandphysician ,inparticular,solitarywavesolutionsfornonlinearequationsareofboththeoreticalandpracticalimportance.Recently ,Yan[1]obtainedatransformationdirectlyfromthefamo…  相似文献   

15.
IntroductionTheanalysisfordynamicproblemofelasticbodieshasbeenstudiedformanyyears.Basedonthemomentlessthinshelltheory ,HuthandCole[1]studiedthestresswaveinasphericalshellproducedbypressureloadsin 1 955.Mcivor[2 ]discussedtheflexuralstressandmembranestressina…  相似文献   

16.
The Discrete Models on a Frictional Single Degree of Freedom System   总被引:1,自引:0,他引:1  
IntroductionThefrictionalsystemthatcouldexhibitchaoticbehaviorhadbeenwell_known[1- 9].In [3] ,Popphadderivedaone_dimensionalcirclemaptodescribethestick_slipmotiononasimplefrictionalsystemandshownitschaoticbehavior.Afteranumberofinvestigations,Poppconcluded :…  相似文献   

17.
1 StressFunctionEquationsofPlanarElasticBodyandConditionsofDefiniteSolutions  Analyticfunctionshavemanyimportantapplicationstotheproblemsofplanarelasticmechanicsandfluidmechanics[1~ 3].Inordertomakeacarefulstudyofthevectorfieldswithsourcesandcurls,thebia…  相似文献   

18.
IntroductionDynamicstabilityanalysisofviscoelasticstructuresismuchmorecomplicatedsincethemathematicalmodelturnsouttobeasystemofintegro_partial_differentialequations,ratherthanasystemofpartialdifferentialonesasintheelasticstructure[1].Manyworkshavebeenp…  相似文献   

19.
On the isometric isomorphism of probabilistic metric spaces   总被引:1,自引:0,他引:1  
IntroductionTherearetwokindsofisometricisomorphisminprobabilisticmetricspacetheory (see[1 -9] ) .ThefirstisthataPMspace (E ,F)isisometricallyisomorphictoanotherPMspace(E′,F′) ,andthesecondisthataPMspaces(E ,F)isisometricallyisomorphictoageneratingspaceofquasi_met…  相似文献   

20.
Scattering of Plane SH-Wave by a Cylindrical Hill of Arbitrary Shape   总被引:7,自引:1,他引:6  
IntroductionInearthquakeengineering ,itisimportantfordesignerstostudytheeffectsofsurfacetopographyoncharacteristicsofstrongearthquakemotion .Manystudiesonthissubjecthavebeencarriedoutinthepasttwentyyears.Trifunac[1]gottheseriessolutiontoscatteringofplane…  相似文献   

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