Page 372 - Biaxial Multiaxial Fatigue and Fracture

356 C. CALI, R. CITARELLA AND M. PERRELLA

Fig. 16. Experimental and numerical front shapes for part-through cracks, at different stages.

A

5.71429et001
2.85714et001
0.00000et000

Von Mises effective stress
Max= 446.70
Min= 0.17642
Fig. 17. Von Mises effective stresses and boundary element mesh on the overall plate.
Even if for that concern the simulation on crack propagation times some further refinement are
necessary, it is possible to foresee very accurately the crack front shapes (Fig. 16). The final
part of the propagation is not under analysis, because BEASY simulation relies on the