动力弹塑性分析的直接积分法

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1、动力弹塑性分析的直接积分法MIDASIT开发二组动力弹塑性分析功能中的恢复力特性恢复力特性•Kinematichardening(标准型)•Isotropichardening(标准型)•Mixedhardening(标准型)•Trilinearpeak-oriented(最大点指向型)•Trilinearorigin-oriented(原点指向型)•Degradingbilinear•Degradingtrilinear•Trilinearelastic•Ramberg-Osgood(Ramberg-Osgood型)•Takeda(武田型)•Ta

2、kedawithslip•Trilinearslip•Degradingstiffnessmodel-Clough&Johnston•逆行型•ひび割れ域剛性低下型•JR總硏剛性低減RC型•JR總硏剛性低減SRC型•マルチリニアの逆行型•3次係數逆行型User-definedHysteresisModel•Degradingstiffness&strength•Pinching&slip•Fibermodel•Multi-axialspringmodel•Tri-axialspringmodelAxialSpringModelsComparisono

3、fVariousAxialSpringModelsFiberModelMulti-axialSpringModelTri-axialSpringModelSectionDivisionConcreteSteelTakedaModelModelsComparisonofTri-axialSpringModelwithTestResultsSpecimenLoadHistoryComparisonofTri-axialSpringModelEX-T1.FreeVibrationof2DFrame:Linear&NonlinearTimeHistoryA

4、nalysisbyModalAnalysis&DirectIntegrationLinearAnalysisModelwithProportionalDamping2kk2kkc=2a1kc=a1k2mm2mmppppProportionalDamping:C=a1KNonlinearAnalysisModelwithNL-LinkLLLL•SectionDimension1stStoryColumn:b=0.1(m),h=0.1(m)2ndStoryColumn:b=0.1(m),h=0.1(m)•ColumnLength:L=4(m)•Mate

5、rial:E=2E+11(N/m2)•NodalMass:m=10000(kgf/g)•Damping:C=a1·Ka1=5.60171411E-2•Quasi-staticLoad:p=6150(N)ModelPropertiesQuasi-StaticLoadandInitialDisplacementppx2(0)=2cmx1(0)=1cmDisplacementResultQuasi-staticLoadingFreeVibrationTime(sec)TheoreticalLinearModalAnalysisNonlinearModal

6、AnalysisLinearDirectIntegrationNonlinearDirectIntegration1.8-1.705E-02-1.708E-02(1.002)-1.708E-02(1.002)-1.708E-02(1.002)-1.708E-02(1.002)3.61.447E-021.450E-02(1.002)1.450E-02(1.002)1.451E-02(1.003)1.450E-02(1.002)5.4-1.222E-02-1.226E-02(1.003)-1.226E-02(1.003)-1.227E-02(1.003

7、)-1.226E-02(1.003)7.21.028E-021.032E-02(1.004)1.031E-02(1.003)1.033E-02(1.005)1.032E-02(1.004)Theoretical&NumericalSolutionof2ndFloorDisplacement(m)EX-T2.SimpleBeamsupportedbyViscousDamper:NonlinearTimeHistoryAnalysisbyModalAnalysis&DirectIntegrationcpTheoreticalAnalysisModelL

8、LmmcE,IE,IBeam&ViscousDamperEquivalentSDFModelNumericalAnalys