Crack propagation

Hallöchen!

I try to model crack propagation in thin film with sfepy. I must admit that I don't understand everything in the docs because my FEM knowledge is mediocre at best, but my plan is the following:

1. I take the "Linear Elasticity" example as a starting point (2.5.1 in the manual)

2. I substitute my own mesh and regions, and boundary conditions

3. I solve the problem

4. I look at the tensions between the nodes. If they exceed a certain threshold, the respective connection breaks up. I change the mesh accordingly.

5. I repeat 3 to 4 until no connections have to be broken up anymore

Is this a sensible approach?