GitLab

+ update .gitignore

New cells : only pantographic effect, no shear floppy mode

Periodic BCs do not seem relevant for DG function spaces. In addition they may not be supported for DG function spaces for now : https://fenicsproject.discourse.group/t/dg-for-advection-equation-with-periodic-boundary-condition/272
Test for demo_homog2D.py : values of Chom and D# have not changed.
+ Black

Improve readibility;
Move cross_energy to materials module

Interpolation rather than projection for the displacement solutions of auxiliary problems.

Move periodic boundary condition class to another file;
Possibility of choosing element (for displacement) and solver settings;
Use of DG elements for strain and stress fields;
Local projection function for DG Functionspace (https://comet-fenics.readthedocs.io/en/latest/tips_and_tricks.html#efficient-projection-on-dg-or-quadrature-spaces)

These functions are no longer redefined in each RVE or part.
Unit test : homogenization of a homogeneous RVE.

Trailing spaces / empty lines / spaces/try-except conventions + change behavior of gemetry reset function.

Elementary test : homogenization of a homogeneous cell.

Reorganizing and simplifying the logging.  One logger per homog file and only 2 handlers which are associated to the root logger.

This may be an alternative to the removal of 'reuse_factorization' in the solver parameters.

 + Demo script