徑向壓縮圓盤試樣的動靜態(tài)應(yīng)力和應(yīng)力強度因子數(shù)值分析.pdf

1、四川大學(xué)碩士學(xué)位論文徑向壓縮圓盤試樣的動靜態(tài)應(yīng)力和應(yīng)力強度因子數(shù)值分析姓名：戴峰申請學(xué)位級別：碩士專業(yè)：固體力學(xué)指導(dǎo)教師：王啟智20030508NumericalAnalysisofDynamicandStaticStressandStressIntensityFactorsforDiscSpecimensunderDiametricCompressionSolidMechanicsGraduateStudentDaiFengSuper

2、visorWangQizhiDiscspecimenshavegreatapplicationintestingthemechanicpropertiesofrock，suchasthecrackedchevronnotchedBraziliandisk(CCNBD)andthecrackedstraightthroughBraziliandise(CSTBD)usedintestingrackfracturetoughness，the

3、BraziliandiscandtheflattedBraziliandise(FBD)usedintestingrocktensilestrengthNumericalresultsofthestressandtheslressintensityfactortothespecimenalecrucialfortestingproceduresAcomprehensivefinitedementmethodstudyisconducte

4、donthenovelspecimenusedfordynamicfractureinitiationtoughnesstestin一CSTBD，toknow’theeffectsoftheloadtypesandthematerialpropertiestothedynamicstressintensityfactorBothtWOdimensionalandthreedimensionalanalysisisperformedtop

5、rovethefeasibilityandtheprecisionofthesuperpositionintegralmethodused攮calculatingthestressintensityfactorWesuggestthatthesuperpositionintegralmethodbeusedindealingwiththedataoftestingOnthebaseoftheanalysisofthestaticFBDu

6、nderdiametriccompression，numericalanalysisandcompareareperformed011thedynamicstressfieldoftheBraziliandiskmadFBDusedinthetestingtensilestrengthunderSHPBUsingthemodaltakingintoeffectsofthenotchwidth，thispaperalsocomputeth

7、estressintensityfactorofCCNBDsuggestbyISRMforrockfracturetoughnesstest，Andsomeconclusionshavebeenmadeinthisresearch。KeyWordsdynamicfractureinitiationtoughnessCSTBDCCNBDFBDdynamicstressintensityfictorFRANC3Dsoftwaresuperp