文档介绍：Draft
Lecture Notes in:
FRACTURE MECHANICS
CVEN-6831
c VICTOR E. SAOUMA,
Dept. of Civil Environmental and Architectural Engineering
University of Colorado,Boulder,CO 80309-0428
May 17,2000
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Victor Saouma Fracture Mechanics
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Contents
IPREAMBULE 3
1 FINITE ELEMENT MODELS FOR for PROGRESSIVE FAILURES 1
.......................... 1
2 Continuum Mechanics Based Description of Failure; Plasticity 1
....................................... 1
UniaxialBehavior............................... 1
IdealizedStress-StrainRelationships..................... 4
HardeningRules................................ 5
........................... 5
Stress...................................... 5
HydrostaticandDeviatoricStressTensors............ 5
GeometricRepresentationofStressStates............. 6
Invariants............................... 7
Strains...................................... 8
HydrostaticandDeviatoricStrainTensors............ 8
Invariants............................... 9
...................................... 9
...................................... 10
J2 Plasticity/vonMisesPlasticity........................... 12
Isotropic Hardening/Softening(J2− plasticity)................ 14
Kinematic Hardening/Softening(J2− plasticity)............... 15
3 Continuum Mechanics Based Description of Failure; Damage Mechanics 1
II FRACTURE MECHANICS 3
4INTRODUCTION 1
.................................... 1
................ 2
..................... 3
............... 6
......................................... 8
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5 PRELIMINARY CONSIDERATIONS 1
5