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1.
IntroductionBellows[1,2 ]isashellofrevolutionwithwrinkledmeridian ,usuallynamedafteritsmeridionalshapeinaperiodoritsprofileofaconvolution ,suchasΩ_shapedbellows,C_shapedbellows,U_shapedbellowsandsoon .Theyarewidelyusedinmanyfields,forexample ,theelasticsense… 相似文献
2.
陈松林 《应用数学和力学(英文版)》2001,22(11):1352-1356
1 IntroductionandLemmasTherearemanyresultsaboutexistence (globalorlocal)andasymptoticbehaviorofsolutionsforreaction_diffusionequations[1- 9].Bytheaidsofresults[2 ,3]ofequation u/ t=Δu-λ|u|γ- 1uwithinitial_boundaryvalues,paper [4 ]studiedtheproblemof u/ t=Δu-λ|eβtu|γ- … 相似文献
3.
IntroductionIntheactivitiessuchastheaerospaceengineeringheatprotection[1,2 ],thelarge_scaleconcretepouring ,thechemicalproduction ,thepowdermetallurgyandthefiresafetyengineering[3,4],thereisonekindofnonlinearparabolicdistributedparametercontrolsystemwithmovi… 相似文献
4.
IntroductionIt’sknownthatinnumericalapproximationoffirst_orderhyperbolicequations,theuseofadaptivefiniteelementmethods (see [1 ] )hasbeenexpandedtomanyfieldssuchascomputationalflowmechanics,thermalanalyses,electricalengineering ,etc.Theh_versionadaptivefini… 相似文献
5.
IntroductionItiswell_knownthatsomenonlineardynamicequations,suchasKdVequation ,sine_Gordenequation ,haveexactsolitonsolutions.Averyimportantspecialityofthesolitonsolutionsofnonlinearequationsisthattheymayhaveasuperposition ,i.e .,thesenonlinearequationsmay… 相似文献
6.
IntroductionThetheoryofimpulsivedifferentialequationshasbeenemergingasanimportantareaofinvestigationsinrecentyears (see [1 ] ) .Inpaper [2 ] ,GuoDa_junestablishedsomeexistencetheoremsofextremalsolutionsfornonlinearimpulsiveVolterraintegralequationsonafinitein… 相似文献
7.
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
8.
IntroductionOfallthefiber_reinforcedcompositematerials,theshort_fibercompositematerialnotonlystrengthensthematrixbutavoidsdefectionsofthelong_fibercompositematerialaswell.Themicro_mechanicsaboutitsuchasfracture ,fatigueanddamageisverycomplex .Intheprevi… 相似文献
9.
IntroductionItiswell_knownthatpiezoelectricmaterialsproduceanelectricfieldwhendeformedandundergodeformationwhensubjectedtoanelectricfield .Thecouplingnatureofpiezoelectricmaterialshasattractedwideapplicationsinelectric_mechanicalandelectricdevices,suc… 相似文献
10.
江福汝 《应用数学和力学(英文版)》1999,(4)
IntroductionIn[1],theseriessolutionsofthecircularplatewithhingededgeandwiththesimplysupportededgehasyetbenconstructed,whicha... 相似文献
11.
Inreference [1 ] ,wediscussedtheinstabilityofNavier_StokesequationonR3×R ,and ,intheillustrationofit,wepresentedsomeexamplesintheformofexactsolution .Thebasisoftheconstructionofthemisthe“equationsecondaire”oftheequation .Infact,theseexactsolutionsaresomelimit… 相似文献
12.
江福汝 《应用数学和力学(英文版)》2001,(3)
IntroductionOwingtothefactthatthesolutionsoftheDirichletproblemsforaclassofsystemsofdifferentialequationsoftheformu″=v ,εv″ f(x ,u ,u′)v′ -g(x ,u ,u′)v=0 ( 0 <x <1,0 <ε 1) ,u( 0 ;ε) =0 ,u( 1;ε) =0 ,v( 0 ;ε) =α ,v( 1;ε) =β,( 1)havethequalitativepropertiesofsolutionsofamorecomplicatedsyste… 相似文献
13.
《应用数学和力学(英文版)》1999,(6)
IntroductionInthiswork,westudytheproblemsoftheboundednesanduniformboundednesofsolutionsofnon_autonomousdiferentialequationsof... 相似文献
14.
王银邦 《应用数学和力学(英文版)》2001,22(1):10-16
IntroductionWhentheboundaryintegralequationmethodisappliedtocrackanalysis,onlynumericalsolutionscanbeobtained ,suchas:thetypicalworksofSnyderandCruse[1],Crouch[2 ],Blandfordetal.[3],Portelaetal.[4 ],Bui[5 ],Weaver[6 ]andWANGetal.[7- 9].Itisverydifficulttoapplytheboundar… 相似文献
15.
IntroductionThestudiesofpositiveradialsolutionsforfollowingsemilinearellipticboundaryvalueproblem(P) Δu(X) +g( |X|)f(u(X) ) =0 , R1<|X|<R2 ,u(X) ||X| =R1 =u(X) ||X| =R2 =0(whereR1>0 ,X ∈Rn,n ≥ 2 )arebeingcontinuedforrecent 2 0yearswithoutinterruption[1- 11],becausetheproblem (P)haswi… 相似文献
16.
IntroductionInpaper[1],D.Guoestablishedtheexistenceofextremesolutionsofinitialvalueproblemsforfirst_orderintegro_differentialequationsofVolterratypeinBanachspaces.Now,weconsidertheIVPforsecond_orderintegro_differentialequationsinarealBanachspaceE:u″=F(t,u,… 相似文献
17.
IntroductionHowtoobtaintravelingwavespeedsandsolutionsinnonlinearreaction_diffusionequationshasbeenaclassoffocusedquestionsformathematiciansandtheoreticalphysicists.Lineardiffusionyieldsinfinitepropagationspeed ,sodiffusioncoefficientswhichdependonthe… 相似文献
18.
李庶民 《应用数学和力学(英文版)》2001,22(11):1333-1343
IntroductionTheexistenceofpeakonTWSofanonlinearwaveequationρt =bux 12 [(u2 ±u2 x) ρ] x, ρ =u±uxx ( 1 )wasconsideredbreiflybyP .Rosenau (see [1 ] ) .Eq.( 1 )isfoundby“reshuffling”Hamiltonianoperatorofbi_HamiltionianstructureinKdVandmKdVequation (see [2 ] ) .BecauseEq.( 1 )hasstron… 相似文献
19.
IntroductionC_shapedbellowsorreferredtoassemi_circlebellowsarewithcomplexconfiguration(Fig .1) .Attheconcaveandconvexjointsoftheshell,forexampleatpointC ,thelatitudeangleψincreasesby 180°abruptly .Soitisthekeytocalculationforbellowsthatmakingupsolutionsexact… 相似文献
20.
胡辉 《应用数学和力学(英文版)》2002,23(1):114-118
IntroductionThesleighproblemisaclassiconeinnonholonomicdynamics.ThesolutionstotheproblemwereobtainedbyС .А .Чаплыгин( 1 898)andC .Carathodory( 1 93 3 ) [1].Thereference [2 ]presentedafewquestionablepointsinthesolutions .Anothersolutionwasofferedinthereference[3 ] .Butthe… 相似文献