PSI - Issue 18

Bruno Atzori et al. / Procedia Structural Integrity 18 (2019) 413–421 Atzori et al/ Structural Integrity Procedia 00 (2019) 000–000

418

6

10

(a)

W L W S W J

J=2785 J/m 2

WL WS WJ

Finite element results

1 W [MJ/m 3 ]

 g =81 MPa  =0.3 Plane stress

0.1

0.0001

0.001

x 0 [m]

(b)

10

J=2530 J/m 2

Area Punto Serie1 W L W S W J

Finite element results

1 W [MJ/m 3 ]

Plane strain  g =81 MPa  =0.3

0.1

0.0001

0.001

x 0 [m]

Figure 3. Local Strain Energy Densities (W L , W S , W J ) rise along the crack bisector line and related parameters obtained by finite element analysis, assuming (a) plane stress and (b) plane stain conditions.