Files: ConfigStiffnessDegradation.py: The main python script which should be run through Abaqus utilities.py and LaminateModel.py: Python function definition used by the Config...py script OA2D.f: Main user-element (UEL) used in Abaqus koutvar.inc.f : Common block definition used by the shadowing element for contour plot output from OA2D.f SubConfig: batch-script used in order to run the script on a linux-cluster using batch (content depends on cluster setup) The codes are used in the following publication to where reference should be made: Herrmann, L., Mikkelsen, L.P., Legarth, B.N., Duddeck, F., Niordson, C.F., An efficient stiffness degradation model for layered composites with arbitrarily oriented tunneling and delamination cracks. Composites Science and Technology, submitted Jan. 2022. The code can also be found on: https://gitlab.windenergy.dtu.dk/lapm/off-axis-2d-user-element-library-for-abaqus/