Figure 5
From: Effect of true triaxial principal stress unloading rate on strain energy density of sandstone

Stress-strain curve of \(\sigma _{3} -\sigma _{2} -\sigma _{1}\) test.
From: Effect of true triaxial principal stress unloading rate on strain energy density of sandstone

Stress-strain curve of \(\sigma _{3} -\sigma _{2} -\sigma _{1}\) test.