共查询到20条相似文献,搜索用时 156 毫秒
1.
IntroductionThemixingflowfieldresultingfromasonicgaseousinjectioninjectedtransverselyintoasupersonicfreestreamisencounteredinmanyfieldssuchasrocketmotorthrustvectorcontrolsystems,supersoniccombustion ,high_speedflightvehiclereactioncontroljets,andgas_t… 相似文献
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IntroductionTheoryofviscoelasticityanditsapplicationshavebeenbecomingaveryattractiveresearchfieldsinceviscoelasticstructureswerewidelyappliedintovariousengineering .Buttotheauthors’knowledge,therearerareforpapersconcerningwithdynamicalbehaviorofviscoe… 相似文献
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IntroductionSincethespecialsuperiorityofartificialneuralnetworkstechnologyinvariousengineeringtechniquesfields,suchasoptimization ,associativememories,patternrecognition ,signalprocessingandautomaticcontrol,therehasbeenincreasinginterestintheinvestigati… 相似文献
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IntroductionDynamicstabilityanalysisofviscoelasticstructuresismuchmorecomplicatedsincethemathematicalmodelturnsouttobeasystemofintegro_partial_differentialequations,ratherthanasystemofpartialdifferentialonesasintheelasticstructure[1].Manyworkshavebeenp… 相似文献
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戴天民 《应用数学和力学(英文版)》2001,22(12):1383-1389
IntroductionTheprinciplesofvirtualpowerandincrementalvirtualpoweraswellastheequationsofmotionandthestressboundaryconditionsofincrementalratetypeinclassicalcontinuummechanicshavebeensystematicallydiscussedbyKUANG[1].Thepurposeofthispaperistwofold :1 )Toes… 相似文献
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IntroductionThediscoveryofquasicrystalaround 1 984 [1,2 ,3]issignificantbreakthroughforcondensedmatterphysicsinrecentyears.Thequasiperiodicsymmetryofsolidpresentsgreattheoreticalsignificance .Numerousquasicrystallinematerialswithstablepropertywereproduced ,thi… 相似文献
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方建会 《应用数学和力学(英文版)》2000,21(7):836-840
IntroductionConservationlawofmechanicalsystemnotonlyhasimportanceinmathematicsbutalsorevealsprofoundphysicallaw .Therearemanymethodsinfindingconservationlawofamechanicalsystem .Inanalyticalmechanicsthetraditionalmethodistodirectlyderivethecircularinteg… 相似文献
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A FORM INVARIANCE OF CONSTRAINED BIRKHOFFIAN SYSTEM 总被引:2,自引:0,他引:2
IntroductionThestudyofthedynamicsofBirkhoffiansystemisanactivebranchinthemodernclassicalmathematicsandamoderndevelopingdirectioninmathematicphysics ,andcanbeappliedtoquantummechanics,statisticalmechanics ,biologicphysics,mechanicsofspaceflightandsomefie… 相似文献
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The Non-Axisymmetrical Dynamic Response of Transversely Isotropic Saturated Poroelastic Media 总被引:5,自引:0,他引:5
IntroductionThedynamicresponseofsaturatedporousmediumisthebasicissue,whichisapplicableingeophysicalexploration ,seismologicalengineering ,oilexploration ,disposalofnuclearwastes,hydraulicengineeringandcivilengineering .Sincetheconstitutiverelationsandwave… 相似文献
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IntroductionInthecaseofgeometricnonlinearity ,themathematicalmodelofviscoelasticstructuresgenerallyisthesystemofnonlinearintegro_partial_differentialequations.Itisverydifficulttofindtheexactsolutiontosuchproblems.Onlynumericalsolutionscouldbeobtainedby… 相似文献
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IntroductionThereareoftensomestructuresorcomponentswhichcanonlytransferonespecialformofstress,suchasthecablewhichcanonlybeusedtotransferthetensionstressandthecontactcomponentwhichcanonlytransferthepressure.Ingeneral,suchproblemsareoftencalledtheunilat… 相似文献
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IntroductionInrecentyears,researchershavebeenmadeonthevariousformulaeofD’Alembertprinciple,attentionhasbeengiventomechanicalprinciplesinthevelocityspaceandthevariationalprincipleinthevelocityspace,andthevelocityspaceofrelativisticmechanicshasbeenmade… 相似文献
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IntroductionForalongtimetheeffectoftemperatureonthevibrationofplateshasdrawngreatattentioninthefieldofaeronauticsandastronautics,chemistry,nuclearpowerandmechanicalengineering.Incorrespondingtheoreticalanalysisthenonlineareffectshouldbetakenintoconsi… 相似文献
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On the Bending, Vibration and Stability of Laminated Rectangular Plates with Transversely Isotropic Layers 总被引:4,自引:1,他引:3
IntroductionThestaticsanddynamicsofrectangularplateshavealwaysbeenofparticularresearchinterestinsolidmechanics.Inparticular,theemergenceofnewmaterialsandnewstructureshasbroughtoutendlessvitalforceintothestudy .Itiswell_knownthattheclassicalplatetheoryb… 相似文献
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IntroductionDuetotheirintrinsicelectromechanicalcouplingproperties,piezoelectricceramicshavebeenextensivelyusedindesignofvariouselectronicandelectromechanicaldevicessuchassensorsandactuators.Inrecentyears,mechanicalanalysisofdislocations ,cracks,cavitie… 相似文献
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IntroductionTheproblemofgivendifferentialequationandseekingitsequivalentHamiltonianiansystembelongstoinverseproblemofanalyticalmechanics,andthelatterisoneofprimeproblemsinclassicalmechanics.ThefamousPoincare_CartonproblemistogettheHamiltonianianregula… 相似文献
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IntroductionTheinterfacialdebondingmaycausethemicrovoids’nucleationinaparticle_reinforcedcomposite .Theinterfacialdebondingisusuallygovernedbythetensionstresscriterion[1,2 ]orenergycriterion[3,4].Intherecentresearchworks,thepresentauthorspointedoutthatthean… 相似文献
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IntroductionTheuseoflaminatedcompositesinthin_walledstructuresincreasessothateffectsoftransversesheardeformationscannotbeneglectedandinvokequitecomplexesinnonlinearanalysis.Itiswell_knownthatthenonlinearanalysisoflaminatedplatesandshellscountingfortr… 相似文献
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武建勋 《应用数学和力学(英文版)》2000,21(7):775-782
IntroductionAccordingtoLove[1],Saint_Venant’sPrinciplecanbeexpressedas:Theeffectofaself-equilibratedsystemofforcesactinginaspherewillrestrictinasmalldomainnearthesphere .Thisprincipleisthebridgebetweentheelasticitytheoryandapplication ,butithasnotbeenprov… 相似文献
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IntroductionFatiguefractrueisaprimarymodeoffailureformetallicstructuresandmechanicalsystemssubjectedtovariousdynamicloads.Atthebeginningofservice,someinherentdefectssuchasmicrocracks,weldingdefects,notches,voidsetc.existinmanystructuresorelements.Thesed… 相似文献