A Source Function for a Dynamic Brittle Unilateral Shear Fracture

A two-dimensional brittle unilateral shear fracture was numerically simulated to form and stop in an elastic isotropic continuum. The final displacements and stresses for unilateral fracture were found to be similar to those for bilateral fracture. However, during and shortly after fracture, dynamic differences in the two types of fracture exist. Displacements normal to the fracture are more complex in the unilateral case because the fracture...