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

<div>The axial stress-strain curves from (a) conventional triaxial compression tests and (b) cyclic loading-unloading triaxial compression tests.</div>

Advances in Materials Science and Engineering

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Figure 4

Figure 4: Research on Characteristic Stress and Constitutive Equation of Confined Sandstone during Damage Evolution Based on Energy Evolution Analysis 

Figure 4 | Research on Characteristic Stress and Constitutive Equation of Confined Sandstone during Damage Evolution Based on Energy Evolution Analysis 