Extensive experimental investigation on the effect of thermal treatment and lateral pressure on the shear behavior of intact mudstone

Shear and maximum principal stress fields predicted by numerical method

Distribution of shear stress σ_xy and maximum principal stress σ_max over the entire SCC sample as a function of stress ratio λ = σ_H/σ_V is shown in Fig. 7. In numerical calculations used to obtain stress fields in this figure, σ_V was constant equal to 1 MPa, but σ_H was changed from 0.0 to 0.25, 0.5, 0.75 and 1.0 MPa to obtain stress ratio λ from 0.0 to 1.0. Figure 7 shows that the shear stress σ_xy concentrates along the bridge between tips of the two horizontal notches. Note that, the distribution and…