Issue 33

E. Maggiolini et alii, Frattura ed Integrità Strutturale, 33 (2015) 183-190; DOI: 10.3221/IGF-ESIS.33.23 186 Figure 3 : An isoline graph depicting first principal stress (100 lines). Figure 4: Example of σ eff,IG plot with isolines graph (100 lines). Max σ eff,IG Horizontal Inclined H/c x y x y 0 -0.05 0.00 -0.01 -0.06 0.1 -0.02 -0.02 0.01 -0.05 0.25 0.00 -0.05 0.00 -0.09 0.5 0.00 -0.10 0.00 -0.15 1 0.00 -0.20 0.00 -0.27 2 0.00 -0.14 0.00 -0.72 4 0.00 -0.08 0.00 -1.56 6 0.00 -0.06 0.00 -0.11 10 0.00 -0.06 0.00 -0.10 20 0.00 -0.05 0.00 -0.20 Table 1 : Position of the max σ eff,IG related to H/c. We can easily create a coordinate system to locate the point of maximum stress and graph its position (curvilineal coordinate dimension d). Figure 5: coordinate systems for the max tension point location.