摘要：A cohesive model for simulating dynamic fracture problems is proposed. The
use of an embedded strong discontinuity finite element recently introduced by
Sancho et al. [9] in the context of quasi-static fracture problems is
followed. Two new ingredients of that model are added to extend the
applicability of that formulation to dynamic fracture: a) the integration of
the constitutive law by using the “implex” scheme determining a very robust
procedure; b) the addition of a like-distributed damage law in a parallel
direction to the principal crack allowing for the crack branching
capture. The formulation is particularly apt to capture the most important
features of the dynamic crack propagation problem, such as the crack tip
velocity and the crack branching phenomena. In the final sections of the
paper, it is shown some numerical applications of this phenomenon.
