Figure 7
The image contains four panels labelled a, b, c, and d. Each panel shows a two-dimensional plot with c in kilopascals on the horizontal axis, ranging from 0 to 30, and phi in degrees on the vertical axis, ranging from 0 to 25. A solid black curve labelled theoretical G x equals 0 slopes downward from high phi at low c to phi equals 0 at c around 15. A red dashed curve labelled ensemble model closely follows the black curve in each panel. Green open circles labelled initial samples appear at discrete c and phi positions above the curves. Blue square markers labelled selected samples appear progressively closer to the black and red curves from panel a to panel d, increasing in number across panels.Iterative calculation process of reliability analysis in Example 2
Note(s): (a) After selecting one sample, (b) after selecting two samples, (c) after four selected samples and (d) after seven selected samples