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1、ResearchonPostfailureMechanicalPropertiesofBrittleplasticRocksbyOOFEMCoupledwRhIEMAbstractShiGuicai(GeoteehniealEngineering)DirectedbyAcademicianGeXiurun1Basedoilthesystemicresearchofobjectorientedprogrammingmethod，athre

2、edimensionalobjectorientednonlinearbrittleplasticnn把elementanalysismodelisconstructed3Basedonthesystemicandcomprehensivereviewandsummarizeofinfiniteelementmethodthefundamentalprinciplesofmappingorattenuationinfiniteeleme

3、ntsandthespecificconstructionmethodsoftheirshapefunetionsareelaborateArespectivelyandthenshapefunctionsofseveralmappingorattenuationinfmiteelementsincommon讎aresummarizedandtheshapefunctionandsomeothercorrelationformulaso

4、fasimpleandutilityinfiniteelementthreedimensional6nodeinfiniteelement8lededucedi3arficularlyaswell4Basedontheworksofpred∞essors，theclassificationofcompletestressstmincurvesofrocksisdiscussedbeneficialIyAppliesplasticpote

5、ntialtheorythemethodsofdeterminationsofplasticflowfactorsbetweenbrittlestrassdropunderdifferentyieldcriterionsarededuce正andasimpleandapproximatetreatmentmethodofthenongorodisplacementincrementgeneratedbc4weenthebrittlest

6、ressdropwhenthenonideaibrittleplasticmodelinvolvedinisputforward51bstsaimstoresearchonthec∞茄ciantofbrittleStl屯ssdropofseveralbrittlerockssuchasmarbleredsandstoneandgraniteaseperformedTheresearchesshow：thebrittlenessofbri

7、ttleplasticrocksisrelative。andcanchangetoductilityaccompaniedbytheincreasingconfiningstress：thebrittlestressdropofbrittleplasticrocksonlytakesplRoewhentheconfiningstressissmall，andthecoofficientofbrittlestressdropisafunc

8、tionoftheconfiningsttl囂sandsuchrelationexpressionsaboutmarbleandredsandstoneafegivenaSwell6Theresultsofcontrastresearchondifferentyieldcriterionsofnonlinearfiniteanalysisshow：intheconditionofthreedimensionusingdifferentg

9、eneralVunMisoscritelionstoapproximateMorhCoulombcriterionDmckcrPragerconditionisinelinedtoconservativeandtheaccurateonewhichapproximatedtoMorhCoulombcriterionisbetweenintcrierandexteriorreflexcircleInteriorverIexcireleis

10、inclinedtobeconservative曲dexteriorvertexcircleisinclinedtobedangerousaswell，andso，theequala啪cireleisthetelativcwell—foundedcompromisechoice7TheapplicationinthestabilityofundergroundexcavationofXiaowanHydropowcrProjectwit

11、hdifferentyieldcriterionsprovesvaliditymadpracticabilityofthethreedimensionalelasticbrittleplasticfiniteelementscoupledwithinfiniteelementsanalyslssoftware(namedasEBPFEM)，whichCallbeofbeneficialreferencetoanalogousprojec

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