Issue 29

R. Dimitri et alii, Frattura ed Integrità Strutturale, 29 (2014) 266-283; DOI: 10.3221/IGF-ESIS.29.23 276 or g * T (path 2) for each loading path, while the total work of separation W remains constant. Once again, inconsistent results are achieved for CZMs 3 and 4, due to the non-monotonic transition of W between the limiting cases, as already explained in the previous example (see Fig. 11c and 12c for CZM3, Fig. 11d and 12d for CZM4 with the PL criterion, and Fig. 11e and 12e for CZM4 with the BK criterion). (a) (b) (c) (d) (e) Figure 11 : Work of separation under non proportional Path 1 (  N =  T ): (a) CZM1; (b) CZM2; (c) CZM3; (d) CZM4-PL criterion; (e) CZM4-BK criterion. (a) (b) (c) (d) (e) Figure 12 : Work of separation under non proportional Path 2 (  N =  T ): (a) CZM1; (b) CZM2; (c) CZM3; (d) CZM4-PL criterion; (e) CZM4-BK criterion.