Empirical relation for dilatant behavior in brittle rocks
Conference
·
OSTI ID:7097947
A constitutive relation was developed for stress-volume strain states in brittle, low porosity rocks under uniaxial compressive stress. Analysis of laboratory data for a quartz sandstone, a granodiorite, and a granite yielded a relation that fits volume strain to within 1 percent for stresses up to near the failure stress. The fact that dilatancy in three dissimilar rocks can be described so well by a single, simple relation suggests that the physics of dilatancy is dominated by two mechanisms, an elastic response of the crack distribution to stress and the propagation of existing cracks.
- Research Organization:
- California Univ., Livermore (USA). Lawrence Livermore Lab.
- DOE Contract Number:
- W-7405-ENG-48
- OSTI ID:
- 7097947
- Report Number(s):
- UCRL-79011; CONF-770706-12
- Country of Publication:
- United States
- Language:
- English
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