Crack models for the failure of rocks in compression
Conference
·
OSTI ID:6967849
Fracture mechanics models are developed to analyze the post failure behavior of rocks under triaxial compression. We consider axially aligned sliding cracks as a model for the axial growth of microcracks and a collinear row of shear cracks at an angle to the direction of maximum compression, as a model for shear failure. It is found that the sliding crack model exhibits strain hardening and strain softening, while the shear crack model exhibits only strain softening. Also, we consider parallel columns of sliding cracks, and show that parallel interaction stabilizes the axial growth of cracks.
- Research Organization:
- Lawrence Berkeley Lab., CA (USA)
- DOE Contract Number:
- AC03-76SF00098
- OSTI ID:
- 6967849
- Report Number(s):
- LBL-25311; CONF-870103-7; ON: DE88012217
- Country of Publication:
- United States
- Language:
- English
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