Research Article
Research on Characteristic Stress and Constitutive Equation of Confined Sandstone during Damage Evolution Based on Energy Evolution Analysis
Figure 8
Energy proportion-strain curves with confining pressures of 5 MPa (a), 10 MPa (b), 20 MPa (c), and 30 MPa (d).
(a) |
(b) |
(c) |
(d) |