F modeling
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Exploded orders CALC_MATR_ELEM, FACTORISERet RESOUDRE.

Dualization and elimination of kinematic boundary conditions (AFFE_CHAR_MECA and CALC_CHAR_CINE).

Solver PETSC, CR algorithm (pre-conditioning LDLT_SP for simple precision factorization and without renumbering).

We check the export and import of PETSc vectors in a field at the nodes with the ToPetSc and FromPetSc methods.