PSI - Issue 71

A.K. Dwivedi et al. / Procedia Structural Integrity 71 (2025) 142–149

148

Fig. 5. Eq. plastic strain contours showing the active softening zone for the primary void configuration of P-0° (a), (b) and (c) for circular secondary voids corresponding to β =0, 0.1 and 0.25.Whereas, (d), (e) and (f) for elliptical secondary voids corresponding to β =0, 0.1 and 0.25.

Fig. 6 . Eq. plastic strain contours showing the active softening zone for the primary void configuration of P-45° (a), (b) and (c) for circular secondary voids corresponding to β =0, 0.25 and 0.50. Whereas, (d), (e) and (f) for elliptical secondary voids corresponding to β =0, 0.25 and 0.50. For β =0, the contour 6a and 6d, shows the distribution effect of secondary voids. In previous section, it is shown that the P 45° arrangement of primary voids leads to the crack branching. Whereas, when circular or elliptical voids are in the plane of =0° , the path of crack is changed to the initial crack plane. As mode- mixity increases to β =0.25,