fedoo.weakform.StressEquilibriumFbar.geometric_stiffness

property StressEquilibriumFbar.geometric_stiffness

Set to True to add the geometric effects to the stiffness matrix.

The use of a geometric stiffness matrix usually don’t improve the convergence and may even require smaller time step. However, geometric_stiffness should be included to reach convergence when the problem involve geometrical instabilities like buckling or when using very large strain (with hyperelastic materials for instance).