简介:理论分析和有限元素(FE)模拟为经常的特定的负担率(CSLR)被执行了缩进爬测试。分析结果显示代表性的压力和缩进紧张在一个短暂时期以后评估变得的常数。而且,FE模拟两个都揭示那相等的应力的轮廓和在indenter下面的相等的塑料紧张率与几何自我类似演变。这建议伪steady缩进爬在indenter下面发生在这个区域。在这个区域的代表性的点与相等的压力平等者被定义为到代表性的压力。另外,在缩进紧张率和相等的塑料紧张之间的比例在伪steady缩进期间在代表性的点评估抓住,这被揭示幂定律材料爬。在indenter下面的控制卷(CV)管理indenter速度,被识别。在缩排的表面的CV的尺寸是印象的约2.5倍大小。压力代表为爬能从伪steady缩进被获得爬数据。这些结果证明CSLR严峻的技术能被用来评估爬有一样的精确性作为的参数常规单轴爬测试。
简介:AD(Alternatingdirection)Galerkinschemesford-dimensionalnonlinearpseudo-hyperbolicequationsarestudied.Byusingpatchapproximationtechnique,ADprocedureisrealized,andcalculation,workissimplified.ByusingGalerkinapproach,highlycomputationalaccuracyiskept.Byusingvariousprioriestimatetechniquesfordifferentialequations,difficultycomingformnon-linearityistreated,andoptimalH^1andL^2convergenceprop-ertiesaredemonstrated.Moreover,althoughalltheexistedADGalerkinschemesusingpatchapproximationarelimitedtohaveonlyoneorderaccuracyintimeincrement,yettheschemesformulatedinthispaperhavesecondorderaccuracyinit.ThisimpliesanessentialadvancementinADGalerkinaualysis.
简介:Wewilldefineandcharacterizeε-pseudoChebyshevandε-quasiChebyshevsubspacesofBanachspaces.WewillprovethataclosedsubspaceWisε-pseudoChebyshevifandonlyifWisε-quasiChebyshev.
简介:Wepresentapseudo-inverseghostimaging(PGI)techniquewhichcandramaticallyenhancethespatialtransverseresolutionofpseudo-thermalghostimaging(GI).IncomparisonwithconventionalGI,PGIcanbreakthelimitationontheimagingresolutionimposedbythespeckle’stransversesizeontheobjectplaneandalsoenablesthereconstructionofanN-pixelimagefrommuchlessthanNmeasurements.Thisfeaturealsoallowshigh-resolutionimagingofgray-scaleobjects.Experimentalandnumericaldataassessingtheperformanceofthetechniquearepresented.
简介:Theproblemforthesolvabilityofpseudo-tearingsubnetworkisoneoftheessentialinvestigationsofnetworktheory.Theresultspresentedwouldbenotonlymathematicalconditionsbutalsotopologicalconditionsforsubnetworksolvability.Theseconditionsarenecessaryandalmostsufficient.Itshouldguideoneintuitivelytothedesignofaccessiblenodes.
简介:Constitutiverelationsaregivenforthedescriptionofthedeformationbehaviorofshapememorymaterials.Thedeformationisthesuperpositionoftheelastic,thethermalandthephasetransformationdeformationcausedbythetransformationfromonetotheotheramongthehightemperaturephase,thelowtemperaturephaseandthestressinducedphase.Thephasetransformationiscontrolledbythedrivingforce,i.e.,theGibbsenergydifferencebetweenthephases.
简介:Wefirstdesignadiscretehyperchaoticsystemviapiecewiselinearstatefeedback.Thestatesoftheclosedloopsystemarelocallyexpandingintwodirectionsbutabsolutelyboundedonthewhole,whichimplieshyperchaos.Then,weusethreesuchlikehyperchaotiesystemswithdifferentfeedbackgainmatricestodesignapseudo-randomsequencegenerator(PRSG).Throughathresholdfunction,threesub-sequencesgeneratedfromtheoutputofpiecewiselinearfunctionsarechangedinto0-1sequences.Then,followedbyXORoperation,anunpredictablepseudo-randomsequence(PRS)isultimatelyobtained.TheanalysisandsimulationresultsindicatethatthePRS,generatedwithhyperchaoticsystems,hasdesirablestatisticalfeatures.
简介:Themulti-scalestructuresofcomplexflowsinchemicalengineeringhavebeengreatchallengestothedesignandscalingofsuchsystems,andmulti-scalemodelingisthenaturalwayinresponse.Particlemethods(PMs)areidealconstituentsandpowerfultoolsofmulti-scalemodels,owingtotheirphysicalfidelityandcomputationalsimplicity.Especially,pseudo-particlemodeling(PPM,Ge&Li,1996;Ge&Li,2003)ismostsuitableformolecularscaleflowpredictionandexplorationoftheoriginofmulti-scalestructures;macro-scalePPM(MaPPM,Ge&Li,2001)andsimilarmodelsareadvantageousformeso-scalesimulationsofflowswithcomplexanddynamicdiscontinuity,whilethelatticeBoltzmannmodelismorecompetentforhomogeneousmediaincomplexgeometries;andmeso-scalemethodssuchasdissipativeparticledynamicsareuniquetoolsforcomplexfluidsofuncertainpropertiesorflowswithstrongthermalfluctuations.Allthesemethodsarefavorableforseamlessinterconnectionofmodelsfordifferentscales.However,asPMsarenotoriginallydesignedaseithertoolsforcomplexityorconstituentsofmulti-scalemodels,furtherimprovementsareexpected.PPMisproposedformicroscopicsimulationofparticle-fluidsystemsasacombinationofmoleculardynamics(MD)anddirectsimulationMonte-Carlo(DSMC).ThecollisiondynamicsinPPMisidenticaltothatofhard-sphereMD,sothatmass,momentumandenergyareconservedtomachineaccuracy.However,thecollisiondetectionprocedure,whichismosttime-consuminganddifficulttobeparallelizedforhard-sphereMD,hasbeengreatlysimplifiedtoaprocedureidenticaltothatofsoft-sphereMD.Actually,thephysicalmodelbehindsuchatreatmentisessentiallydifferentfromMDandismoresimilartoDSMC,butanintrinsicdifferenceisthatinDSMCthecollisionsfollowdesignedstatisticalrulesthatarereflectionoftherealphysicalprocessesonlyinverylimitedcasessuchasdilutegas.PPMisidealforexploringthemechanismofcomplexflowsa
简介:InthisworkweanalyzethecharacteristicsofquantumentangleinentoftheDiracfieldinnoninertialreferenceframesinthecontextofanewtypepseudo-purestate,whichiscomposedoftheBellstates.Thiswillhelpustounderstandtherelationshipbetweentherelativityandquantuminformationtheory.SomestateswillbechangedfromentangledstatesintoseparableonesaroundthecriticalvalueF=1/4,butthereisnosuchacriticalvalueforthevariableyrelatedtoaccelerationa.WefindthatthenegativityNas(ρ^TAAB1)increaseswithFbutdecreaseswiththevariabley、whilethevariationofthenegativityNb1b11(ρ^TB1B1B11)isoppositetothatofthenegativityNAB1(ρ^TAAB1).WealsostudythevonNeumannentropiesS(ρAB1)andS(ρB1B11)、WefindthattheS(ρAB1)increaseswithvariableybutS(ρB1B11)isindependentofit.However,bothS(ρAB1)andS(ρB1B11)firstdecreaseswithFandthenincreaseswithit.TheconcurrencesC(ρAB1)andC(ρB1B11)arealsodiscussed.WefindthattheformerdecreaseswithywhilethelatterincreaseswithybutbothofthemfirstincreasewithFandthendecreasewithit.
简介:Theoriginofpseudopeakwasstudiedbymeansofmicellarelectrokineticcapillarychromatographywithcetyltrimethylaminiumbromideasthepseudostationaryphase.Ithasbeenpointedthattwopeaksmayappearforonecomponentundercertainconditions.Experimentsshowedthattherelativeareasofthetwopeaksofanalytedependedonthetimeandthetemperatureofreactionbetweenanalyteandsurfactant,andtheconcentrationofsurfactantinthesamplesolution.Itmeansthattheinteractionbetweentheanalyteandthesurfactantisaslowprocess,andastablesubstancecanbeproducedfromtheinteraction.Itisthesubstanceandtheanalytethatmayleadtotheformationoftwopeaks.Thefastinteractionmechanismbetweenthesoluteandthemicellarshouldbequeriedfromtheexperimentresult.
简介:这篇论文在地下的结构的横断面的地震抵抗设计描述一个通常使用的伪静电干扰方法。基于动态理论和地下的结构的颤动特征,错误的来源当使用这时,方法被分析。装载途径的传统的地震运动被aone维的土层反应应力在被区分然后变换成地震实时负担的一个方法代替。验证改进方法,分析结果的比较在地震用四个方法摇晃典型浅嵌入的塑造盒子的地铁车站结构下面为内力被进行:反应排水量方法,有限元素反应加速方法,有限元素动态分析方法和改进伪静电干扰计算方式。改进有限元素伪静电干扰方法在这建议纸为地下的结构的地震设计提供一个有效工具,这被显示出。近到那些的评估收益结果由有限元素获得了改进有限元素伪静电干扰方法提供的动态分析方法,和表演精确的更高的度。
简介:Inearthquakeproneareas,understandingoftheseismicpassiveearthresistanceisveryimportantforthedesignofdifferentgeotechnicalearthretainingstructures.Inthisstudy,thelimitequilibriummethodisusedforestimationofcriticalseismicpassiveearthresistanceforaninclinedwallsupportinghorizontalcohesionlessbackfill.Acompositefailuresurfaceisconsideredinthepresentanalysis.Seismicforcesarecomputedassumingthebackfillsoilasaviscoelasticmaterialoverlyingarigidstratumandtherigidstratumissubjectedtoaharmonicshaking.Thepresentmethodsatisfiestheboundaryconditions.Theamplificationofaccelerationdependsonthepropertiesofthebackfillsoilandonthecharacteristicsoftheinputmotion.Theaccelerationdistributionalongthedepthofthebackfillisfoundtobenonlinearinnature.Thepresentstudyshowsthatthehorizontalandverticalaccelerationdistributioninthebackfillsoilisnotalwaysin-phaseforthecriticalvalueoftheseismicpassiveearthpressurecoefficient.Theeffectofdifferentparametersontheseismicpassiveearthpressureisstudiedindetail.Acomparisonofthepresentmethodwithothertheoriesisalsopresented,whichshowsthemeritsofthepresentstudy.
简介:Itiswellknownthatcertainisotopyclassesofpseudo-AnosovmapsonaRiemannsurfaceSofnon-excludedtypecanbedefinedthroughDehntwistst(α|~)andt(β|~)alongsimpleclosedgeodesies(α|~)and(β|~)on(S|~),respectively.LetGbethecorrespondingFuchsiangroupactingonthehyperbolicplaneHsothatH/G≌(S|~).Foranypointa∈(S|~),defineS=(S|~)\{a}.Inthisarticle,theauthorgivesexplicitparabolicelementsofGfromwhichheconstructspseudo-AnosovclassesonSthatcanbeprojectedtoagivenpseudo-Anosovclasson(S|~)obtainedfromThurston'sconstruction.