简介：在西北的伊朗的Soursat变形建筑群(SMC)是SanandajSirjan变形的带的部分。建筑群由不同变形、Pluto的岩石组成，但是被由石榴石，十字石，kyanite，fibrolite，堇青石，和andalusite组成的metapelites统治。在片岩的Porphyroblastsschistosity的一样的织物，和三个阶段是在场的。内部schistosity(Sn)包括小道也是偏移量由结合extensionalschistosity(Sn+1)和一秒(Sn+2)的集合那crenulates(Sn+1)。多相的变态在建筑群是在场的。石榴石，十字石，kyanite，和fibrolite集合在M1变形事件期间保存条件。这个集合产出645瑩挠湡戠?敳癲摥愠?的磅估计?敮?敧灯票楳慣?敭桴摯椠?桴?硥汰牯瑡潩?景挠浯汰硥琠牥慲湩瀠票楳杯潮祭愠敲??档愠?潭湵慴湩?番杮敬?敤敳瑲?慭獲?漠獮潨敲漭晦桳牯?牴湡楳楴湯污愠敲?湡?潳漠?愠摮栠獡愠?硥整獮癩?灡汰捩瑡潩?牰獯数瑣椠?桃湩?湩琠敨映瑵牵吗？

简介：ThetransientresponsetolongitudinalimpactofflexiblerodswithHertzcontactiscloselyrelatedtotheextentofdeformationswithdifferentimpactparameters.BymeansofLS-DYNA,fordifferentradiusanddifferentspeeds,thelongitudinalimpactofahammerwitharoundedendonadrillrodisnumericallysimulatedinthisarticle.Simulationsdemonstratethatthereisanobviousdif-ferencebetweenanalyticalsolutionandnumericalsolutiononconditionofshortcurvatureradius.Inthecircumstancecontactpressureincreases,theboundaryoftheyieldzoneexceedsthatofthecontactzone,andthesignificantplasticdeformationreducestheintensityofcontactpressurepulse.Contactforce-timecurvesinloadingandunloadingphasesshiftdown.Thenumericalsolutionisingoodagree-mentwithanalyticalsolutiononconditionoflargecurvatureradiusandimpactspeeds.Thedeforma-tionofyieldregionisconstrainedbythesurroundingelasticregionandnosignificantplasticdeforma-tionappears.

简介：严肃异例在三种尺寸照亮表面下的岩性学和地质的结构，它为隐藏的差错，沉积的盆，地下室岩性学，和另外的地质的目标的研究是重要的。尽管并非所有地质的接触对应于lithological接触，印射的接触在结构的政体，变丑式样和趋势上提供关键信息。为印射的接触的许多技术被开发了。这里，我们评估用于gridded数据的五个方法。开始的二是严肃地(GFhgm)的水平坡度大小，并且倾斜TIhgm)。第三和第四依靠定位分析信号的最大值(作为)并且3D本地人wavenumber(LW)。第五是规范的标准差(NSTD)方法。在这篇文章，我们为印射接触评估这五个方法的使用并且比较结果。首先，合成垂直地站在一起的模型被用来确定从真接触地点的最大值的偏移量由于有限来源厚度，中央深度，和宽度的来源效果。第二，接触剧降的效果被讨论。最后，一个真实数据集合被用来评估每个方法的能力面对噪音和gridding人工制品生产协调接触趋势的地图。

简介：Inordertostudybucklingpropagationmechanismindeepseapipelines,thecontactbetweenpipeline’sinnerwallsinbucklingprocesswasstudied.Atwo-dimensionalringmodelwasusedtorepresentthepipelineandanonlinearspringmodelwasadoptedtosimulatethecontactbetweeninnerwalls.Basedontheelastoplasticconstitutiverelationshipandtheprincipleofvirtualworktheory,thecouplingeffectofpipeline’snonlinearlargedeformationandwallcontactwasincludedinthetheoreticalanalysiswiththeaidofMATLAB,andtheapplicationscopeofthetheoreticalmodelwasalsodiscussed.Thecalculatedresultsshowthatduringtheloadingprocess,thechangeinexternalpressureiscloselyrelatedtothedistributionofsectionstress,andoncethewallsarecontactingeachother,theexternalpressureincreasesandthenremainsstableafteritreachesaspecificvalue.Withoutfracture,thepipelinesectionwillstopshowingdeformation.Theresultsoftheoreticalcalculationsagreewellwiththoseofnumericalsimulations.Finally,inordertoensurereliabilityandaccuracyofthetheoreticalresults,thecollapsepressureandpropagationpressurewerebothverifiedbynumericalsimulationsandexperiments.Therefore,thetheoreticalmodelcanbeusedtoanalyzepipeline’sbucklingdeformationandcontactbetweenpipeline’sinnerwalls,whichformsthebasisforfurtherresearchonthree-dimensionalbucklingpropagation.

简介：基于集中的离子微笑并且砍磨擦仪器数据，多决定(0.2nm-5m)卷粗糙与粗糙接触(VR与交流)原则上的三维的结构滑动表面接口表面(PSS)在高效上被测量计算站台；并且物理塑料爬磨擦模型被使用混合的超积分方程与格子Boltzmann与格子格林功能(BE-LB-LG)建立。rheological性质和VR与交流进化在下面的关联短暂(10s)宏正常应力(18300MPa)并且滑动率(0.257.5m/s)被获得；并且在co地震的闪光加热的PSS磨擦是量的第一次分析了。

简介：Inordertotheoreticallystudythebucklepropagationofsubseapipelineswithslip-onbucklearrestors,atwo-dimensionalringmodelwassetuptorepresentthepipelineandanonlinearspringmodelwasadoptedtosimulatethecontactbetweenpipeline’sinnerwallsandbetweenpipeline’souterwallandslip-onbucklearrestor’sinnerwallduringbucklepropagation.Inaddition,somereversespringsareaddedtopreventthewallofleftandrightsidesseparatingfromtheinnerwallofslip-onbucklearrestors.Consideringlargedeformationkinematicsrelationsandtheelastic-plasticconstitutiverelationofmaterial,balanceequationswereestablishedwiththeprincipleofvirtualwork.Thevariationofexternalpressurewithrespecttothecross-sectionalareaofpipelineswasanalyzed,andthelowerboundofthecrossoverpressureofslip-onbucklearrestorswascalculatedbasedonMaxwell’senergybalancemethod.Bycomparingthetheoreticalresultswithexperimentandfiniteelementnumericalsimulation,thetheoreticalmethodisprovedtobecorrectandreliable.