简介：Weinvestigatetheelasticfieldinducedbyanedgedislocationinamultilayeredlaminatedcompositecomposedof(N—2)thinbondedelasticlayerssandwichedbetweentwosemi-infiniteelasticmedia.Asimpleclosed-formsolutionisobtainedwhenallthephaseshaveequalshearmodulusbutdifferentPoisson'sratios,andwhenthedislocationislocatedintheuppersemi-infinitephase.Theimageforceactingonthedislocationduetoitsinteractionwiththemultilayeredstructureisalsoderived.Severalspec...

简介：一条一般热力学的变化途径被使用在边脱臼上学习力量，它驱使脱臼爬。我们的注意集中于为脱臼负责的物理机制爬。在一个材料元素的脱臼由于空缺从脱臼核心扩散进或外面爬，与充当为在材料元素的空缺散开的来源或一个水池的脱臼。为脱臼的基本管理方程爬并且脱臼上的climb力量由于现在的热力学的变化途径自然地被获得。

简介：Poles-apartdislocationhasbeentakingplaceinthecognitionofChina-EUrelationsandcausingvaryingjudgmentsontheorientationofthisrelationshipinbothChinaandEurope.OneviewbelievesthattheoverallstrategiccooperativepartnershipbetweenChinaandtheEuropeanUnionremains

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简介：AZener-Strohcrackinteractingwithanedgedislocationisstudied.Thecrackfacesareassumedtobetractionfree.Theapplied'generalizedloading'forcrackistheinitialdisplacementjumpandtheinterventionoftheedgedislocation.Throughdecomposingtheproblemintotwosubsimpleproblems,usingthesuperpositionprinciple,itssolutionisobtained.Todemonstrateboththevalidityofthesolutionanditspotentialapplication,twosimpleexamplesrelatedtothecrackstressintensityfactorsarepre...

简介：Inthispaper,theelasticfieldoftheinfinitehomogeneousmediumwithtwocircularcylindricalinclusionsundertheactionofascrewdislocationisin-vestigatedandthecorrespondinganalyticalsolutionisobtained.Here,theconformalmappingandthetheoremofanalyticalcontinuationareused.Fromtheresultsob-tained,itcanbeseenthattheelasticfielddependsontheshearmoduliofindividualphases,thegeometricparametersofthesystem,andthepositionandrelativeslipofthescrewdislocation.Inaddition,thecorrespondingspecificcasesarealsoconsid-eredinthispaperwhentwocircularcylindricalinclusionsaretangenttoeachotherandtheyareholesand/orrigidinclusions.Finally,numericalresultsareillustratedtoshowtheinteractionbetweenthescrewdislocationandtwocircularcylindricalinclusions.

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简介：客观：设计一个临床上适用的transoralpharyngealatlantoaxialreduction盘子(TARP)，介绍操作过程，并且评估它的初步的临床的效果。方法：一个新奇TARP系统，包括的蝴蝶钛合金板，self-lockingscrews，atlantoaxial减速器和另外的运作的仪器被开发。这个系统与先天或创伤的起源的无法缩减的atlantoaxial脱臼在五个病人上临床上被使用。在操作期间，减小被板和atlantoaxial减速器的联合行动在transoral关节版本和绳索解压缩以后完成。骨头接枝小粒在双边的atlantoaxial关节之间被植入，TARP被用来随后使地图集和轴不能调动。结果：临床的申请证明TARP能导致立刻的减小并且方法是操作上可行的并且它的帖子运作的效果令人满意。结论：TARP的设计是新奇的。运作的过程简单、易用。而且，立刻的减小能在操作期间被完成，固定是相对稳定的。TARP是为无法缩减的atlantoaxial脱臼的一种理想的选择并且可以为进一步临床的应用程序有优秀前景。

简介：作者报导了支撑了臀部的无法缩减的postero侧面的创伤的脱臼与的一个27岁的人的案例胶囊并且labral陷阱。起始的X光显示出仅仅小acetabular碎片。在在一般麻醉下面与肌肉麻痹减少臀部的二次尝试失败了以后，病人被立即的开的减小通过一条postero侧面的途径对待。臀部的外科的探索表明小osteochondral碎片属于上唇和囊的一大片，堵塞髋臼。大腿骨的头与扭扣孔效果在撕的囊上交叉。这些元素被减轻，骨头碎片与2公里螺丝钉被修理，囊被修理。在10年的后续，功能的结果与100个点的一个哈里斯分数和坏死或骨关节炎的没有迹象是优秀的。作者建议这不平常的损害的文学评论。

简介：与ipsilateral联系的臀部的创伤的以后的脱臼代替了大腿骨的颈骨折是稀罕损害。而且，如此的病人的管理唤起考虑主要代替或保存大腿骨的头的强壮的看法。我们与如此的损害介绍了年轻成年人的一个盒子。他被操作在之上与大腿骨的颈的脱臼和固定的减小，在cancellous的帮助下的骨折拧紧。二年以后，破裂联合起来，病人是无征状的。我们进一步为如此的破裂建议了损害的机制并且在发展中的世界的变化损伤情形讨论了管理。

简介：Aplasticdeformationzonenearascrewdislocationistreatedasanequivalenttrans-formationinclusionbymeansoftheEshelbyinclusiontheory.Aclosed-formsolutionfordeter-miningtheinteractionbetweenascrewdislocationandaplasticallydeformedzoneofanarbitraryshapeisobtainedbyusingthesolutionbetweenadislocationandanequivalenttransformationinclusion.

简介：Theglidingbehaviorofedgedislocationnearagrainboundary(GB)incopperunderpureshearstressesissimulatedbyusingmoleculardynamics(MD)method.Many-bodypotentialincorporatingtheembeddedatommethod(EAM)isused.ThecriticalshearstressesforasingledisocationtopassacrossGBsurfaceareobtainedatvaluesofσ_c=23MPa～68MPaand137MPa～274MPafor∑=165smallangletiltGBat300Kand20K,respectively.Thefirstresultagreeswiththeexper-imentalyieldstressσ_y(=42MPa)quitewell.ItsuggeststhattheremightbeoneofthereasonsofinitialplasticyieldingcausedbysingledislocationglidingacrossGB.Inaddition,theremightbepossibilitytoobtainyieldstrengthfrommicroscopicanal-ysis.Moreover,theexperimentalvalueofσ_yatlowtemperatureisgenerallyhigherthanthatatroomtemperature.So,theseresultsareinconformityqualitativelywithexperimentalfact.Ontheotherhand,the∑=25GBistoostronganobstacletothedislocation.Inthiscase,adislocationisabletopassacrossGBunderrelativelylowstressonlywhenitisdrivenbyotherdislocations.Thisistakentomeanthatdislocationpile-upmustbebuiltupinfrontofthiskindofGB,ifthisGBmaytakeeffectontheprocessofplasticdeformation.

简介：Thesimulationofnanoindentationintosinglenickelcrystalisperformedbyusingquasicontinuummethod.Thestrainenergy-displacementandload-displacementcurvesarepresentedtostudythemechanicalbehaviorofthedislocationnucleation.Thecharacteristicsofthestackingfaultanddislocationnucleationaredeterminedbycalculatingthecentro-symmetryparametersandanalyzingthedisplacementfieldoftheatomsbeneaththeindenter.Thestructureofthestackingfaultandthecharacteristicsofdislocationobtainedinthesimulationbyquasicontinuummethodarereproducedinthesimulationbymoleculardynamics.

简介：Interfacedislocationsmaydramaticallychangetheelectricproperties,suchaspolarization,ofthepiezoelectriccrystals.Inthispaper,westudythelinearinteractionsoftwointerfacedislocationloopswitharbitraryshapeingenerallyanisotropicpiezoelectricbi-crystals.Asimpleformulaforcalculatingtheinteractionenergyoftheinterfacedislocationloopsisderivedandgivenbyadoublelineintegralalongtwocloseddislocationcurves.Particularly,interactionsbetweentwostraightsegmentsoftheinterfacedislocationsaresolvedanalytically,whichcanbeappliedtoapproximateanycurvedloopsothatananalyticalsolutioncanbealsoachieved.Numericalresultsshowtheinfluenceofthebi-crystalinterfaceaswellasthematerialorientationontheinteractionofinterfacedislocationloops.

简介：AbstractSubtalar dislocation is defined as a separation of the talocalcaneal and talonavicular articulations, commonly caused by high-energy mechanisms, which include falls from height, motor vehicle crashes, and twisting leg injuries. The dislocations are divided into medial, lateral, anterior, and posterior types on the basis of the direction in which the distal part of the foot has shifted in relation to the talus. The most common type is medial dislocation resulted from inversion injury. Subtalar dislocation may accompany with other fractures. Physical examination must be performed carefully to assess for neurovascular compromise. Most of the subtalar dislocations can be treated with closed reduction under sedation. If this is not possible, open reduction without further delay should be conducted. After primary treatment, X-ray and computed tomography scan should be performed to evaluate the alignment and the fractures. We report a 37-year-old male patient sustained a subtalar dislocation without any bony injury when he was playing football. The patient was successfully treated by closed reduction, and a good alignment was observed at the last follow-up. The pathogenesis and treatment method of this case were analyzed, and the related literature were reviewed, which provided a reference for future clinical treatment.

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简介：Dynamicstrainaging（DSA）isanimportantphenomenoninsolutehardenedmetalsandseri-ouslyaffectsthemechanicalpropertiesofmetals.DSAisgenerallyinducedbytheinteractionbetweenthemovingdislocationsandthemobilesoluteatoms.Inthispaper,onlytheinteractionbetweenmovingdisloca-tionsandmobilesoluteatomsinadislocationcorearea（coreatmosphere）willbetakenintoaccount.Toes-rablishtheconstitutivemodelwhichcandescribetheDSAphenomenon,weimprovedtheZerilli-Armstrongdislocation-mechanics-basedthermalviscoplasticconstitutiverelation,andaddedtheeffectoftheinteractionbetweenthemovingdislocationsandcoreatmosphere.BecausetheconstitutiverelationestabhshedisbasedontheZerilh-Armstrongrelation,itcandescribenotonlytheDSAphenomenon,butalsothemechanicalbe-haviorofmetalsoverabroadrangeoftemperatures（77K～1000K）andstrainrate(10-4～104s-1).Themodelpredictionfortantalumfitswellwiththeexperimentaldata.

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简介：一个简单立方的格子的脱臼方程被与微分术语和不可分的术语预先明确地被给了的秒顺序的系数基于分离格子理论使用格林的功能方法获得了。我们讨论了的简单立方的格子是一个可解决的模型，它根据格子静电干扰和对称原则被获得并且能验证并且验证脱臼格子理论。它能介绍对大多数有仲裁格子结构的金属合适的统一脱臼方程。通过把现在的可解决的模型的结果与脱臼格子理论作比较，这能被看见，然而，我们获得的边和螺丝钉部件的不可分的术语的系数根据脱臼格子理论的结果螺丝钉部件的微分术语不与脱臼格子理论的结果一致的秒顺序的系数。这被表面术语的减少的动态矩阵主要引起，它是本质获得脱臼方程。根据简单立方的可解决的模型，不是仅仅直脱臼而且弄弯的脱臼的意见，例如纽结，能进一步被调查。

简介：阶段地水晶(陆军)模型被用来模仿premelting脱臼运动对称当系统温度在时，在紧张行动下面倾斜谷物边界(STGB)远非，到融化的融化的点和结束分别地指。结果证明当premelting温度被接近到，本地premelting发生包围脱臼从在温度下面。STGB的premelting脱臼能在紧张行动下面滑行，并且premelting区域是为脱臼滑行的一个同伴。STGB腐烂的过程以二个高温度条件是很类似的。当premelting介绍，它减少为脱臼的滑行抵抗并且导致脱臼的一个更快的运动，并且也在STGB的腐烂过程期间引起系统的更多的精力减小。尽管有把紧张用于这些，premelting在STGB的整个腐烂过程取样，premelting脱臼区域显然不发展并且延长。这显示外部紧张行动不在高温度支持premelting，并且不能导致更多的premelting脱臼，它能在脱臼展览附近被欠到premelting阶段像液体的性质并且到容易滑行并且放松紧张精力的premelting脱臼；这与实验和分子的动力学的结果一致。