简介：从火车装载的交通引起的一个磁道的永久解决的预言和控制对高速度的铁路设计和维护关键。在这研究，在铁路建设使用的geomaterials的积聚的变丑的一个统一预言模型使遭到了到周期的装载被介绍并且校准了使用物理模型测试。基于这个万用的模型，在火车的车轮轴的运动引起的重复装载下面决定轨道结构解决的一条计算途径被建议。测试的物理模型上的回归分析被采用决定涉及计算途径的参数。模型测试数据和从背分析获得的参数在整个各种各样的测试是一致的计算结果表演的比较调节，并且建议计算途径能够令人满意地为各种各样的轴负担预言铁路路基和路基土壤的积聚的解决，装载骑车。一条高速度的铁路的案例研究被执行在现实主义的工程应用表明建议途径的可行性。从路基和路基土壤的解决发展的计算结果被介绍并且讨论。关键词周期的装载-总数-泥土-积聚的解决-旁边支持的高速度的铁路：不到资助号码50538010的中国的国家自然科学基础，10702063；在资助号码2008G005-D下面的铁路的中国部的技术提升工程

简介：ThehotdeformationbehaviorofTC18alloyatstrainratesrangingfrom1910-4to1910-2s-1andtemperaturesrangingfrom25to800°CwasstudiedusingaWDW-300electronicuniversaltestingmachine.Therelationshipsbetweentruestressandtruestrainshowthatflowstressdecreaseswiththeincreaseoftemperatureandincreasesasstrainrateincreases.Theeffectofstrainrateontheflowstressbecomespronouncedathighertemperatures.Atroomtemperature,theriverpatterncharacteristicofbrittlefractureandthedimplepatterntypicalofductilefracturearefoundtoexistindifferentregionsoffracturesurfacesofthesamples.AnimprovedconstitutiverelationshipisproposedtoaccuratelydescribetheflowstressofTC18byconsideringtheeffectofstrain.Andamicroscopicmodelisalsodeducedwhichcanlinkthephysicalmechanismstothemacroscopicexperimentalresults.Agoodagreementisobtainedbetweenthepredictionsofthemicroscopicmodelandtheresultsofthemacroscopicexperiment.

简介：Textureevolutionofhigh-manganesetwining-inducedplasticity(TWIP)steels(Fe-16Mn-0.6C)duringcold-rollingisstudiedbymeansofquantitativeorientationdistributionfunction(ODF)analysis.Thicknessreductionsofthespecimensduringcold-rollingare10%,20%,30%,50%and65%,respectively.EvolutionoftextureisoftheBrasstype,whichistypicalforlow-stackingfaultenergy(SFE)materials.Thecontributionofdeformationtwinningtothedevelopmentoftextureisclearlyillustratedbythemonotonici...

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简介：纸学习CO2激光加热制作的一种改进photonic水晶纤维栅栏方法。周期的空气洞变丑导致的cladding的有效折射索引用多极方法被计算，并且在有效折射索引之间的关系和空气洞的倒塌从而被讨论有效折射索引的调整表示被获得。栅栏传播特征被模仿。结果显示与从3.3m增加到3.7m的空气洞的直径，回声波长出现蓝移动，回声山峰加强，并且带宽变得狭窄。当cladding的倒塌度提高，回声波长出现红移动，传播增加，和带宽趋于变窄。

简介：Agroupoftheoreticalmodelshasbeendevelopedforanalyzingtransientdynamicre-sponsetofilledmetalliccylindricalshellsimpactedbyflat-nosedmissilesatnormalobliquityontheba-sisoftheanalogymodelingmethodofbeam-onfoundation.Itcanbeusedforsolvingtheglobaldefor-mationandthelocalfailureofcylindricalshellsintheimpactprocess.Theballisticlimitspeedandim-pactresponsehistoryhavebeencalculatedbythisgroupoftheoreticalmodels,andtheinnerpressureeffectontheballisticlimitspeedandsomeparametersarediscussedatlength.Thequantitativerela-tionshipbetweeninternalpressureandtheballisticlimitspeedandsomesignificantconclusionshavebeenobtained,whicharebasicallyidenticalwithpreviousexperimentalresults.

简介：Constrainedgroovepressing(CGP)isanewsevereplasticdeformationmethodsuitableforproducingultra-finegrainedsheetmetals.Inthiswork,theprocessingefficiencyforamuti-passCGPofpurecopperwasinvestigated.Witharelativelysmallgroovewidthof2mmandtightconstraint,asharpvariationofmechanicalpropertieswithpassnumberisobserved.Subgrainswiththesizeof*0.5lmhavedistinctboundaries,whichisthepredominantfeatureinthemicrostructureafterthreepasses.Theevolutionofdeformationhomogeneitycharacterizedbymicro-hardnessdistributionwasexaminedindetail.Observationsofopticalmicrographsandfracturesurfacemorphologyconfirmtheevolutionrule.Therelationbetweenelectricalresistivityandaccumulativeplasticstrainwasdiscussed.Crystallinedefects,micro-cracks,andmicrostructureuniformitytogetherdeterminethechangeofelectricalresistivityofCGPcopper.

简介：热卷的多相的钢的机械性质上的热变丑和随后的austempering的影响被调查。处理的Thermo机械的控制(TMCP)被使用一个实验室进行热滚动工厂完成卷减小的三种不同类型，和有我们重新申请的各种各样的等温的成立持续时间的austemperings。结果证明了由多角形的铁酸盐，小粒的巴菌体和大量稳定的保留的奥氏体组成的多相的微观结构能被卷过程控制获得。机械性质与因为保留的奥氏体的稳定，增加变丑的数量增加。最终的张力的力量(sigma_b)，全部的延伸(三角洲)和全部的延伸(sigma_b中心点三角洲)到达最大的价值(791MPa，36%和28476MPa百分比，分别地)在最佳的过程。

简介：Alloyingelements,suchassiliconandmanganese,haveamajorimpactonthephasetransformationpointofsteel.Specifically,manganeseisanelementfortheexpansionandstabilityoftheausteniteregion,whilesiliconcanexpandandstabilizetheferriteregion.Phasetransformationoccursduringthehotrollingprocessforthesteelwithcertainsiliconcontent,whichleadstogreatchangesofthedeformationresistance,therebyaffectingtherollingstability.Consequently,abetterunderstandingofphasetransformationintherollingprocesswillcontributetotheenhancementofproductquality.Inthispaper,theon-linerollingdatawereprocessedbymeansoftheinversecalculationmethod.Inthismethod,thesteeldeformationresistancewithvarioussiliconandmanganesecontentswasobtainedandanalyzedtodeterminethedeformationbehaviorofthesteel,whichcanhelpimprovetheon-linecontrolmodelandenhancethesteelquality.

简介：StudyofseismicactivityintheKuqaareaenablesustoinfersomepossibleactivefaultsinbasementfromtheePicentraldistributionondifferentprofiles.Therelationsbetweenactivefaultsinthebasementandsurfacestructuresareanalyzedandthedifferencebetweensedimentarycoverandbasementintheirdeformationcharacteristicsandthegenesisarediscussed.Thefollowingconclusionshavebeendrawn:(1)theepicentraldistributionindicatesthat,theeastQiulitagandsouthandnorthQiulitagdeepfaultsinthebasementcorrespondtotheeastandwestQiulitaganticlines,respectively.Moreover,deepfaultsalsoexistbeneaththeYiqiklikandYakenanticlines.Itindicatesthattheformationofsurfacestructuresiscontrolledbydeepstructures;(2)ANE-trendingstrike-slipfaultdevelopsalongthelinefromthewesternterminationofYiqiklikstructuretoDongqiuWell5andaNW-trendingactivefaultonthewesternsideofBaicheng.ThetwoactivefaultsacrossthetectonicstrikearethemaincausesfortectonicsegmentationoftheKuqadepressionandpossiblythecauseforthemiddlesegment(Kuqa-Baicheng)ofthedepressiontobemoreshortenedthanbothitseasternandwesternterminations;(3)Thedifferencebetweenthesedimentarycoverandbasementintheirdeformationcharacteristicsdependsmainlyonthedifferentpropertiesofmediabetweenthem.Thelithosphericstrengthofthebasementinthebasinisfairlyhigh,whichdeterminesthebasementdeformationtobemainlyofbrittlefractureseismicactivity.Whilethestrengthofsedimentarycoverislow,wherethereexistweakthinlayers,suchascoalandgyps.Undertheeffectofstrongtectoniccompression,thesedimentaryrocksmayundergostrongviscousorplasticflowdeformation;meanwhile,anaseismicdetachmentmaytakeplacealongtheweaklayers.

简介：ThedeformationpatternndHoloceneslipratealongtheFukangfaultinEasternTianshan,Chinaareanalyzedandstudiedusingthedataobtainedinfieldinvestigation.TheresultindicatesthattheFukangfaultconsistsof4low-anglesouth-dippingthrustfaultswithstepover,displayingrecenttectonicactivity.Themovementalongtheterminationpartsofthefaultisweaker,withanaverageverticalsliprateof0.13-0.33mm/ainHolocene,andalongthemiddlepartofthefaultisstronger,withanaverageverticalslipratelargerthan1.42mm/ainHolocene.TheHolocenedeformationpatternalongthefaultdisplaysgenerallysteadyslip,multi-phaseintermittentmovementalongitswesternsegment,andpersistentmovementalongitsmiddleandeasternsegments.whichhavecausedrapiddislocationuptothesurfaceinanearlierphase.

简介：Asensingsystemisdevelopedtomeasuretheweldpoolboundaryandpoolsurfacedeformationingastungstenarcwelding.LaserStrobetechniqueisusedtoeliminatethestrongarclightinterference,andspecularreflectionfromthepoolsurfaceissensedtodescribetherelationbetweenthedeformedstripesandpoolsurfacedepression.Clearimagesofboththepoolboundaryandthedeformedstripesedgesareobtainedduringgastungstenarcweldingprocess,whichlaysfoundationforreal-timemonitoringthepoolsurfacedepressionandweldpenetration.

简介：一个完全的岩石失败过程通常涉及象在未经触动的岩石桥断裂形成坚持的失败表面和产生岩石块的随后的运动一样先存在洞/幻灯片断绝。最近发展了数字歧管方法(NMM)为建模有潜力如此的一个完全的失败过程。然而，NMM承受一限制，即，意外材料领域区域变化依次发生建模。因为僵硬身体旋转没在NMM明确地被代表，这个问题不能容易被解决。不连续的变丑分析(DDA)特殊为建模被开发分离的块系统。因为僵硬身体旋转在一种明确的形式被代表，在DDA建模的rotationinduced材料区域变化能方便地被避免。在这份报纸，一种转变技术被建议并且实现了把NMM建模变换成DDA建模以便完全借助于二个方法模仿一个完全的岩石失败过程，在哪个NMM被采用为早从continua象转变一样断裂到discontinua建模，当DDA被采用当模特儿时，产生岩石的随后的运动堵住。如此的一条数字途径也作为与一条完全的NMM建模途径相比极大地改进模拟效率。与先存在断裂一个岩石平板位于斜坡冠和导致的大量的落石过程的非坚持的关节被模仿。到DDA的从NMM的建模转变的有效性被验证，建议数字途径的适用性被调查。

简介：ThestoredenergyandtheenergyreleaseduringSPD(superplasticdeformation)ofaZn-5Alalloywerestudied.Thealloyafterrollingprocessgainsmorestoredenergy,andtheas-rolledspecimencanobtainmaximumelongationandminimumflowstresswithouthotholdingtreatmentbeforeSPD.ExperimentalresultsshowthatstoredenergyreleaseprocessisalongwithSPDprocessandisalsoanimpetustoSPD.Theas-rolledZn-5Alalloyhas48J/molstoredenergywhichwasmeasuredwithDSC(differentialscanningcalorimeter)andconformswelltothecalculatedvalue.Theas-rolledZn-5AlalloyafterSPDwithanelongationof2500%releases112J/molstoredenergy.Analysisshowsthatthestrainrateisindirectratiototherateofstoredenergyrelease.

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简介：Young’sequationisafundamentalequationincapillarityandwetting,whichreflectsthebalanceofthehorizontalcomponentsofthethreeinterfacialtensionswiththecontactangle(CA).However,itdoesnotconsidertheverticalcomponentoftheliquid-vaporinterfacialtension(VCLVIT).ItisnowwellunderstoodthattheVCLVITcausestheelasticdeformationofthesolidsubstrate,whichplaysasignificantroleinthefabricationofthemicrofluidicdevicesbecauseofthewideuseofthesoftmaterials.Inthispaper,thetheoretical,experimental,andnumericalaspectsoftheproblemarereviewed.TheeffectsoftheVCLVIT-inducedsurfacedeformationonthewettingandspreading,thedeflectionofthemicrocantilever,andtheelasto-capillarityandelectroelasto-capillarityarediscussed.Besidesabriefreviewonthehistoricaldevelopmentandtherecentadvances,somesuggestionsonthefutureresearcharealsoprovided.

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简介：Basedonthedatafromrepeatedpreciselevelingandacross-faultdeformationmeasurementscarriedoutinrecent30yearsandtheanalyzedresultsfromGPSobservationsmadeinrecentyearsalongthenortheasternmarginofQinghai(Xizangblock,andcombinedwiththegeologicalstructuresandseismicactivities,somecharacteristicsinregionaltectonicdeformationandstrongearthquakedevelopmentarestudiedandapproachedpreliminarily.Theresultsshowthat:a)Thespace-timedistributionofcurrenttectonicdeformationinthisareaisinhomogeneouswithrelativelyintensivetectonicdeformationinthevicinityofmainboundaryfaultsandweakdeformationinthefartherareas.Theintensityofverticaldifferentialmovementandthedeformationstatusvarywithtime,andthehorizontalmovementanddeformationarecharacterizedbyapparentcompressionandstrike-slip.b)ThetectonicstressfieldgeneratedbytheNE-trendingcontinuouscompressivemovementofQinghai(XizangblockduetothenorthwardpressandcollisionofIndiaplateistheprincipalstressforthetectonicdeformationandearthquakedevelopmentinthisarea.Theevolutionofspace-timedistributionoftectonicdeformationandseismicityiscloselyrelatedtotheblockactivityanddynamicevolutionofregionaltectonicstressfield.c)Theverticaldeformationupliftandhigh-gradientdeformationzonesandtheobviousfaultdeformationanomalyappearedalongtheboundariesoftectonicblockscanbeconsideredastheindicatorsofhinderedblockmotionandintensifiedtectonicstressfieldforstrongearthquakedevelopment.Usually,theabove-mentionedphenomenawouldbefollowedbytheseismicityofM(6.0,buttheearthquakemightnotoccurintheplacewiththemaximummovement.Thezoneswiththefaultdeformationanomalycharacterizedby(tendenciousaccumulationaccelerationturning(andthesurroundingareasmightbethepositionsforaccumulationofstrainenergyanddevelopmentandoccurrenceofstrongearthquakes.

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