简介：ByusingtheformuladerivedinPart(Ⅰ),theinstantresponseofanunrestrainedplanarframestructuresubjectedtotheimpactofamovingrigid-bodyareevaluatedandanalysed.Theimpactforce-timehistorybetweenthestructureandthemovingrigid-body,shearforceandbendingmomentdistributionalongthebeams,axialforcedistributionalongthebarswerecalculated.Thewavepropagationphenomenaofthelongitudinalwaveinthebars,theflexuralandshearwavesinthebeamswerealsoanalysed.Thenumericalresultsshowthatthetimedurationofimpactforceiscontrolledbytheflexuralwaveandthelongitudinalwave;thesheareffectinbeamsshouldnotbeneglectedintheimpactresponseanalysisofstructures.

简介：Trafficruleisakeyfactoraffectingtrafficflowandsafety.Wedevelopourmodels,includingthecellularautomatatrafficflowmodelaswellasthelinearregressionone,aimingatcalculatingtrafficflowandevaluatingsafetyconditionswithvariedtrafficrules.Then,wethoroughlyinvestigatefourtypesofpathsinafreeway,namelytwostraightlanes,threestraightlanes,ramps,androundaboutsascasestudiesanddiscussthedifferenttrafficrulesascomparison.Theresultsdemonstratethat“Keep-Right-Except-To-Pass”ruleisnotaseffectiveasthefreeruleinpromotingtrafficflow;however,thisruleensuressafetyfordriversbetterthanthefreerule.Additionally,anewtrafficrule,whichsetsdifferentpostedspeedlimitsforadjacentlanes,isproposedtopromotebettertrafficflowwithsafetyrequirementssatisfied.Furthermore,weapplyeffectiverulesandalternatives,leftdrivingnormsaswellasintelligentsystemasextensionandobtainbetterresults.Finally,model’ssensitivityanalysisregardingtoprobabilityofdeceleratingandpostedspeedlimitsprovesthestabilityofourresults.

简介：Thenatureofthethree-dimensionaltransitionarisingintheflowpastacylinderisinvestigatedbyapplyingtheLifschitz-HameiritheoryalongspecialLagrangiantrajectoriesexistinginitswake.ResultsshowthatthevonKarmanstreetisunstablewithregardtoshort-wavelengthperturbations.Theasymptoticanalysispredictsthepossibleexistenceofbothsynchronous(asmodesAandB)andasynchronous(asmodeC)instabilities,eachassociatedtospecificLagrangianorbits.Theproposedstudyprovidesusefulqualitativeinformationontheoriginofthedifferentmodesbutnoquantitativeagreementbetweenthegrowthratespredictedbytheasymptoticanalysisandbyaglobalstabilityanalysisisobserved.Thereasonsforsuchmismatcharebrieflydiscussedandpossibleimprovementstothepresentanalysisaresuggested.

简介：在设计应用，概率的可靠性理论看起来是一会儿然而，在许多情况中，精确概率的可靠性理论不能被认为实际事情的真实状态的模型同样足够、可信的最重要的方法。在这篇论文，当统计数据被发现不够时，我们开发了概率、非概率的可靠性理论的一个混血儿，它把结构的不明确的参数描述为间隔变量。由使用间隔分析，为计算结构的可靠性以及可靠性索引的间隔的一个新方法在这篇论文被介绍，并且传统的概率的理论与间隔分析被合并。而且，新方法保存传统的概率的可靠性理论的有用部分，但是在数据上移开它的严格的要求的限制获得。例子被举表明建议理论的可行性和有效性。

简介：Inthispaper,wediscussthetopologicalstructuresofthevortexfilamentsandvortextubeswithanexactsolutionofastraightspiralvortextube.Wefindthattherearesomeconfusionsaboutthecalculationofthehelicitiesofaknottedvortexfilamentandsomelinkedvortexfilamentsbyusingdifferentmethods.Weexplainhowtounifythesemethodsandgivetherightresults.

简介：Thispaperdevelopsahypersonicaerothermalsimulationmethodformissileslotflow.ThefinitevolumemethodofstructuregridsolverisdevelopedforsolvingEulerandNavier-Stokesequations.ThesolverincludesPark'stwotemperaturemodelandtheairmulti-speciesreactionmodel.Thesecond-orderaccuracyTVDnumericalmethodwasdeducedtocomputethehypersonicaeroheatingwhichimprovesthecomputationalefficiency.Computationalresultsaregiventoshowthehighaccuracycomparingtotheexistingexperimentaldata.

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简介：Accordingtothelower-boundtheoremoflimitanalysistheRigidFiniteElementMeth-od(RFEM)isappliedtostructurallimitanalysisandthelinearprogrammingsforlimitanalysisarededucedinthispaper.Moreover,theThermo-ParameterMethod(TPM)andParametricVariationalprinciples(PVP)areusedtoreducethecomputationaleffortwhilemaintainingtheaccuracyofsolutions.Abettersolutionisalsoobtainedinthispaper.

简介：Thispaperdealswiththelimitanalysesofperfectrigid-plasticcontinua.Basedonthekinematictheoremofthelimitanalysistheory,amathematicalprogrammingfiniteelementformulafordeterminingtheupperboundloadmultiplierhasbeenestablished,andaniterationalgorithmproposedaccordingly.Inthisalgorithmtheplasticandrigidzonesaredistinguishedforeveryiterationstep,andthegoalfunctionismodifiedgradually.Thedifficultiescausedbythenonsmoothnessofthegoalfunctionareover-come.Someexamplessolvedbythisalgorithmarepresented.

简介：Stretchableelectronics,whichofferstheperformanceofconventionalwafer-baseddevicesandmechanicalpropertiesofarubberband,enablesmanynovelapplicationsthatarenotpossiblethroughconventionalelectronicsduetoitsbrittlenature.Oneeffectivestrategytorealizestretchableelectronicsistodesigntheinorganicsemiconductormaterialinastretchableformatonacompliantelastomericsubstrate.Engineeringthermalmanagementisessentialforthedevelopmentofstretchableelectronicstoavoidadversethermaleffectsonitsperformanceaswellasinapplicationsinvolvinghumanbodyandbiologicaltissueswhereeven1–2°Ctemperatureincreaseisnotallowed.Thisarticlereviewstherecentadvancesinthermalmanagementofstretchableinorganicelectronicswithfocusesonthethermalmodelsandtheircomparisonstoexperimentsandfiniteelementsimulations.

简介：敏感的二种类型为静态地稳定的sailcrafts被建议。一种类型是关于质量的中心的位置的solar-radiation-pressure力量的敏感，并且另外的类型是关于态度的solar-radiation-pressure力量的敏感。敏感的二种类型代表solar-radiation-pressure力量怎么随着集体中心和态度的位置变化。有更大的敏感的Sailcrafts经历solar-radiation-pressure力量的更大的错误，导致更大的轨道错误，，由模拟示威了。然后作为案例研究，详细公式被导出与四张三角形的风帆为sailcrafts计算敏感。根据这些公式，敏感打字以便减少两个，在反对风帆之间的角度不应该太大，并且质量的中心应该远是离四张风帆并且尽可能的对称的轴尽可能靠近的离开sailcraft的压力的中心。

简介：ＡＮＡＬＹＳＩＳＯＦＳＴＡＢＩＬＩＴＹＯＮＥＬＡＳＴＩＣＰＬＡＴＥＳＷＩＴＨＩＮＩＴＩＡＬＩＭＰＥＲＦＥＣＴＩＯＮＳＸｕＫａｉｙｕ（徐凯宇）（ＲｅｃｅｉｖｅｄＯｃｔ．５．１９９４；ＣｏｍｍｕｎｉｃａｔｅｄＰａｉＬｉｚｈｏｕ）ＡＮＡＬＹＳＩＳＯＦＳＴＡ...

简介：Theapproximateeigenfrequenciesforthein-planevibrationsofacablestruc-tureconsistingofinclinedcables,togetherwithpointmassesatvariouspointswerecom-puted.Itwasdiscoveredthattheclassicaltransfermatrixmethodwasinadequateforthistask,andhencethelargerexteriormatriceswereusedtodeterminetheeigenfrequencyequation.Thenpredictionsofthedynamicsofthegeneralcablestructurebasedontheasymptoticestimatesoftheexteriormatricesweremade.

简介：有二个参数的动态系统的分叉性质在这份报纸被调查。设置的转变的定义被建议，并且开发的途径被用来与非线性的反馈控制器调查非线性的强迫的未击中的系统的动态特征。整个参量的飞机被转变集合划分成几个坚持的区域，然后在不同坚持的区域的分叉图被获得。关键词二个参数-分叉-单个分析工程被中国(10632040)的国家自然科学基础支持。

简介：与空隙的牛顿的液体由一座钟摆运动的液体桥连接的一双中央动人的球形的粒子经常在微粒结合过程被遇到。在这篇论文，由假定完成式湿的状况，静态的液体桥牌上的液体体积和分离距离的效果被分析，并且在破裂精力之间的关系和液体桥体积也被学习。这些点将具有在与粘合剂粒子有关的工业过程的意义。

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简介：Thispaperwillchseussthegeneralizedvariationalprinetples.whichtheestablishedbythemethedofundeterminedmultipliersinstructures.andanalysthestatiedllyindeterminatetruss.inwhichtheseprincipleswillbeused.Atthesametimewebringasymmetricalmatrixandgivespeeitiesohution.thusalltheinternalforeesofstructuresmaybefound.

简介：Thispapergivesanexactanalysisofarotatingpiezoelectricsphericalshellwitharbitrarythickness.Atfirst,threedisplacementfunctionsareintroducedtosimplifythebasicequationsofasphericallyisotropic,piezoelectricmedium.Byexpandingthedisplacementfunctionsaswellastheelectricpotentialintermsofsphericalharmonics,thebasicequationsofequilibriumareconvertedtoanuncoupledEulertype,secondorderordinarydifferentialequationandacoupledsystemofthreesecondorderordinarydifferentialequations.Ageneralsolutiontothehomogeneousequationsofequilibriumisthenderived.Thestaticanalysisofarotatingsphericalshellisthenperformedandnumericalexampleispresented.

简介：Theanalysisanddesignoftheextendedstateobserver(ESO)involvesacontinuousnon-smoothstructure,thusthestudyoftheESOdynamicrequiresmathematicaltoolsofthenonlinearsystemsanalysis.ThispaperestablishesthesufficientconditionsforabsolutestabilityoftheESO.Basedonthisstudy,amethodologytoestimateseveralnonlinearfunctionsindynamicssystemsisproposed.

简介：AnFEanalysisprocedurewaspresentedtopredictthebehaviorofsoilogeogridinterctionunderautomobileloading.Thedynamicinteractionsbetweenthetransversebars,thelongitudinalribsandthesoilweresimulatedbyasystemconsistingofnonlinearsprings,dashpotsandmasses,tostudythedeformationpropertiesofthereinforcedsoil.Theequivalentstiffnessanddampingratioscouldbedeterminedwiththeshakingtable.Thedynamicresponsesofareinforcedsubgradewereanalyzedwiththe3Dfiniteelementapproach.Thisapproachisprogrammedandappliedtoanalyzethesoilogeogridinteractionunderdynamicloading.Thecomparativeanalysisoftheresponseofthereinforcedsubgradeandthatofthesubgradewithoutreinforcementshowsthatthegeogridplacedatthebottomofthebaselayermayeffectivelyreducetheaccumulativeplasticdeformationduetothecyclicautomobileloading.