Research on Characteristic Stress and Constitutive Equation of Confined Sandstone during Damage Evolution Based on Energy Evolution Analysis

<div>Determination process of characteristic stress by EPM with the confining pressures of 5 MPa (a) and 20 MPa (b).</div>

Advances in Materials Science and Engineering

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Figure 9

Figure 9: Research on Characteristic Stress and Constitutive Equation of Confined Sandstone during Damage Evolution Based on Energy Evolution Analysis 

Figure 9 | Research on Characteristic Stress and Constitutive Equation of Confined Sandstone during Damage Evolution Based on Energy Evolution Analysis 