k3d updated

environment.yml

tour2_constant_bond/fragmentation.ipynb

...d/5_1_Introspect_Damage_Evolution_Damage_initiation.ipynb

..._released_in_pullout_constant_bond_and_rigid_matrix.ipynb

tour6_energy/6_3_localized_energy_dissipation.ipynb

tour7_cracking/7_1_bending3pt_2d.ipynb