简介：摘要本文详细介绍了在ABAQUS中，与Mohr-Coulomb屈服准则匹配的平面应变Drucker-Prager屈服准则及可转化为Drucker-Prager屈服准则表达式形式的其他屈服准则在ABAQUS中与Mohr-Coulomb屈服准则的参数转换关系。

简介：Anewviscoelastic-plastic(VEP)constitutivemodelforseaicedynamicswasdevelopedbasedoncontinuummechanics.Thismodelconsistsoffourcomponents:Kelvin-Vogitviscoelasticmodel,Mohr-Coulombyieldingcriterion,associatednormalityflowruleforplasticrehololgy,andhydrostaticpressure.Thenumericalsimulationsforicemotioninanidealizedrectangularbasinweremadeusingsmoothedparticlehydrodynamics(SPH)method,andcomparedwiththeanalyticalsolutionaswellasthosebasedonthemodifiedviscousplastic(VP)modelandstaticicejamtheory.ThesesimulationsshowthatthenewVEPmodelcansimulateicedynamicsaccurately.ThenewconstitutivemodelwasfurtherappliedtosimulateicedynamicsoftheBohaiSeaandcomparedwiththetraditionalVP,andmodifiedVPmodels.TheresultsoftheVEPmodelarecomparedbetterwiththesatelliteremoteimages,andthesimulatediceconditionsintheJZ20-2oilplatformareaweremorereasonable.

简介：碾压混凝土筑坝具有节省投资,施工速度快及简化温控技术等优点,因此在国内外得到了广泛推广,但随之而来的层间抗剪特性成为急待解决的问题,层间抗剪强度已成为决定碾压混凝土坝抗滑稳定的重要因素,结合同家“八·五”科技攻关项目“普定碾压混凝土拱坝层间抗剪特性研究”,本文进行了碾压混凝土立方试件单轴及多轴抗剪试验,建议了多轴抗剪破坏准则,可以作为工程设计的依据。

简介：摘要文章分析了当前高层建筑结构地震破坏准则的现状进行分析，然后分别对水平地震动作用下混凝土高层建筑结构地震破坏准则、扭转地震动作用下混凝土高层建筑结构地震破坏准则、竖向地震动作用下混凝土高层建筑结构地震破坏准则进行探究，旨在为相关人员提供借鉴，提升我国混凝土高层建筑结构的抗震能力。

简介：摘要笔者结合自身实践，针对在高层建筑中，混凝土结构的破坏准则进行了简要的分析与探讨，对于混凝土高层建筑结构地震破坏的一般规律进行了简要阐述。同时，结合其一般规律，对于地震破坏准则对于混凝土高层建筑的影响的研究提供了基本思路。

简介：Nanometer-scaleAuquantumdotshavebeenassembledonSiO2bycontrollingthereactionofrawmatedaistoformacitrateAusolandanaminosilane/dithiol-treatedpatternedSiwafer.Thedetailedformationmechanismhasbeenstudied.Threegoldcolloidalparticles(-15nm),alignedinachaintoformaone-dimensionalcurrentpath,wasbridgedacrossan80-nmgapbetweensourceanddrainmetalelectrodes,ThedeviceexhibitedaCoulombblockadeeffectat33K.

简介：Theoretical–computationalstudiesoftable-toplaser-drivennuclearfusionofhigh-energy(upto15MeV)deuteronswith7Li,6Li,andDnucleidemonstratetheattainmentofhighfusionyieldswithinasource–targetreactiondesign.ThisconstitutesasourceofCoulomb-explodingdeuteriumnanodropletsdrivenbyanultraintensefemtosecondnear-infraredlaserandasolidhollowcylindricaltargetcontainingthesecondelement.Thesource–targetreactiondesignattainsthehighesttable-topfusionefficiencies(upto4×109J1perlaserpulse)obtainedtodate.Thehighestconversionefficiencyoflaserenergytonuclearenergy(102–103)fortable-topDDfusionattainedinthesource–targetdesigniscomparabletothatforDTfusioncurrentlyaccomplishedfor‘bigscience’inertialfusionsetups.

简介：Inthiswork,aSignoriniproblemwithCoulombfrictionintwodimensionalelasticityisconsidered.Basedonanewrepresentationofthederivativeofthedouble-layerpotential,theoriginalproblemisreducedtoasystemofvariationalinequalitiesontheboundaryofthegivendomain.Theexistenceanduniqueessofthissystemareestablishedforasmallfrictionalcoefficient.Theboundaryelementapproximationofthissystemispresentedandanerrorestimateisgiven.

简介：一声巨响过后,璀璨的烟花打上了半空,倏地消逝,紧接着,胡双喜从院子里赤身裸体跑出来.这是第三次了.每次都是这样,周边四邻都转悠过来看热闹,路过的人停了步,凑在一起,看着胡双喜,倒也谈不上幸灾乐祸,只是围观.胡双喜蹲在地下呜呜地哭,泪水将脸上的黑冲散了.有人对胡双喜的遭遇无动于衷,有人却拨打了110.一个小时后,来了三个警察,看了一眼蹲在地上的胡双喜,说又是你,你先把衣服穿上.胡双喜说,这都第三次了,到底是谁干的,我操他妈的.一个警察说,别骂了,我们也正调查呢.另一个警察说,和上次一样,院里给扔了礼花弹,震碎了玻璃,其它倒也没损失什么.

简介：Objective:Laser-inducedCoulombexplosionofgoldnanoparticlesforbreastcancerhasbeenstudiedbynanophotolysistechnique.Thisstudyaimedtoinvestigatewhetherlaser-inducedbubbleformationduetoCoulombexplosioncanprovideaneffectiveapproachforselectivedamageofbreastcancerwithgoldnanoparticles.Method:Numericalmethodinvolveslaser-inducedCoulombexplosionofgoldnanoparticles.Differentparametersrelatedtonanophotolysissuchaslaserfluence,tumordepth,clusterradius,laserpulseduration,andbubbleformationisstudiednumerically.NumericalsimulationwasperformedusingMatlab.Results:Thegoldnanoparticlesof10,20,30,40,and50nminradiuscouldpenetrateintotumor1.14,1.155,1.189,1.20and1.22cmindepthrespectively.Themaximumpenetrationdepthintumorcouldbeobtainedwithnanoparticlesof50nmradius.Shortlaserpulseof40nswithnanoparticlesof10nmradiuscouldpenetrateintotumor1.14cmindepth.Bubbleswitharadiusof9μmcouldeffectivelykillbreastcancercellswithoutdamaginghealthyones.Thebubbleradiusincreasedfrom4to9μmwithanincreaseinpulsedurationintherangeof10to30ns.Conclusions:Goldnanoparticleswithincreasingradiusandbubbleformationforselectivedamageofbreastcancercellsaresuccessfullyprobed.Thepresentcalculatedresultsarecomparedwithotherexperimentalfindings,andgoodcorrelationisfoundbetweenthepresentworkandpreviousexperimentalvalues.Itwasdemonstratedthatbubbleformationintumormayfurtherincreasetheefficacyofbreastcancertreatment.

简介：从薛定谔方程出发，运用简略高等代数方法推导了d电子Coulomb矩阵元（J，K）的Racah参量表示．

简介：这篇文章与库仑潜在的x考虑3D-Hartree-type方程的一个家庭(?1)，其起始的数据震荡以便一苛性出现。在线性几何光学盒子中，由使用Lagrangian积分，对答案在外面的一致描述苛性、近苛性被获得。给词调音：Hartree方程；几何光学；Lagrangian积分

简介：StudiesofthermalizationprocessesofenergeticchargedparticlesproducedinD-He^3fusionreactionsareveryimportantforcalculationsoftheirslowingdowntime,energyfractiontransferredtobackgroundionsandelectronsandfastionpressure(thatmeansfastionβ).Basedontheassumptionofbinarycollision,thetotalrateofenergylossofthetestparticleequalstothesumovertheratsofenergylossestotheelectronandallionspecies.Forthesecalculations,

简介：ThenewmethodproposedrecentlybyFriedberg,LeeandZhaoisappliedtothederivationoftheatomicground-stateenergywiththeinclusionofthescreeningeffect.ThepresentresultsarecomparedwiththoseobtainedinthepureCoulombpotentialandbythevariationalapproach.Theoverallgoodresultsareobtainedwiththisnewmethod.``

简介：WeinvestigatetheisospineffectofCoulombinteractiononthemomentumdissipationornuclearstoppingintheintermediateenergyheavyioncollisionsbyusingtheisospin-dependentquantummoleculardynamicsmodel.ThecalculatedresultsshowthattheCoulombinteractioninducesobviouslythereductionsofthemomentumdissipation.WealsofindthatthevariationamplitudeofmomentumdissipationinducedbytheCoulombinteractiondependssensitivelyontheformandstrengthofsymmetrypotential.However,theisospineffectofCoulombinteractiononthemomentumdissipationislessthanthatinducedbythein-mediumnucleon-nucleoncrosssection.Inthiscase,Coulombinteractiondoesnotchangeobviouslytheisospineffectofmomentumdissipationinducedbythein-mediumtwo-bodycollision.Inparticular,theCoulombinteractionispreferableforstandinguptheisospineffectofin-mediumnucleon-nucleoncrosssectiononthemomentumdissipationandreducingtheisospineffectofsymmetrypotentialonit,whichisimportantforobtainingthefeatureaboutthesensitivedependenceofmomentumdissipationonthein-mediumnucleon-nucleoncrosssectionandweaklyonthesymmetrypotential.

简介：在在一个抛物线的量点强壮联合的electric-LO声子的条件上，我们获得地面状态和第一激动的状态的eigenenergy，地面状态的特徵函数并且第一--由使用Pekar的变化方法的激动的状态类型。在量点的这个系统可以作为二水平的量system-qubit被采用。当电子处于地面的重叠状态时--并且第一激动的状态，我们获得电子密度的时间进化。库仑有约束力的参数上的电子的概率密度的关系和库仑有约束力的参数，经常的联合的electron-LO-phonon和监禁长度上的摆动的时期的关系被导出。

简介：BytheaftershockfrequencyestimationmethodbasedonthecalculationofcoseismicstaticCoulombstresschangesandrate-andstate-dependentfaultconstitutivelaw,wecalculatethefrequencyof"direct"aftershocksoftheWenchuanearthquakerelatedtocoseismicstaticCoulombstresschangesinitsaftershockzoneandtheareasnearby.Itshowsthatthefrequencyissignificantlylowerthanthetruthinthemainrupturezone,especiallyinthesouthernrupturezone,duetothedecreaseofstresslevelontheruptureplaneofthemainshockresultingfromcoseismicCoulombstresschange.ThestudyalsoshowsthattheeffectoftheCoulombstresschangeonthedurationofaftershockactivityisassociatedwiththelowerlimitmagnitude.Thedurationisabout15-16monthsforaftershocksaboveML4.0,andcloseto60monthsforaftershocksaboveML3.5.Inthisperiod,theratioofthe"direct"aftershockscausedbycoseismicCoulombstresschangerangesbetween44.7%to48.6%,whichsuggeststhat,eveninthe"effective"periodofcoseismicCoulombstresschanges,abouthalfoftheaftershocksonthemainshockruptureplaneareindependentofcoseismicCoulombstresschanges.Itispointedoutthatthoseaftershocksmayberelatedtotheaftersliportheviscoelasticrelaxation,whicharetimedependentcases.

简介：Thefeaturesofthelow-lyingspectraoffour-bodyA+B-A+B-systemshavebeendeducedbasedonsymmetry.Usingthemethodoffew-bodyphysics,wecalculatetheenergyspectraofA+B-A+B-systemsinaharmonicquantumdot.Wefindthatthebiexcitoninatwo-dimensionalquantumdotmayhaveotherboundexcitedstatesandthequantummechanicalsymmetryplaysacrucialroleindeterminingtheenergylevelsandstructuresofthelow-lyingstates.

简介：<正>夏天是休憩房屋的季节,或者在适当的时候,修理之前要先进行破坏。当要砸碎什么的时候,试试看下面这些工具。

简介：城堡久攻不下，间谍送来消息：敌人正积极准备反扑，因为他们的援军很快就会来了。这时，一场硬仗在所难免，你必须想办法破坏南边的塔楼!一个好主意是潜入塔楼下犬挖特挖，直到把它挖垮。这是一着险棋，可一旦成功，就能迅速攻占城堡。