fedoo.constitutivelaw.FE2

class FE2(assemb, name='')

FE² constitutive law based on periodic microscopic problems.

A microscopic finite-element problem is solved at each macroscopic integration point. The macroscopic strain is prescribed through the problem-level MeanStrain degrees of freedom created by PeriodicBC.

Parameters:

• assemb (Assembly, str, or list of Assembly) – Microscopic assembly, its registered name, or one microscopic assembly per macroscopic integration point.

• name (str, optional) – Name of the constitutive law.

__init__(assemb, name='')

Methods

FE2.get_H_plane_stress(H)	Convert a full 3D tangent matrix H in an equivalent behavior in 2D with the plane stress assumption.
FE2.get_all()	Return a dict with all the known ConstitutiveLaw (with a name).
FE2.get_current_local_frame([assembly])	Return the trial material frame in global coordinates.
FE2.get_local_frame([assembly])	Return material frames, resolved at assembly Gauss points.
FE2.get_local_rotation([assembly, current, ...])	Return a Simcoon rotation for the requested material frame.
FE2.global2local_H(H[, assembly, current])	Rotate a global stiffness to material axes using Simcoon.
FE2.global2local_rotation_increment(DR[, ...])	Express a finite rotation increment in the initial material basis.
FE2.global2local_strain(strain[, assembly, ...])	Express engineering-strain vector(s) from global to material axes.
FE2.global2local_stress(stress[, assembly, ...])	Express stress Voigt vector(s) from global to material axes.
FE2.global2local_tensor(tensor[, assembly])	Change both axes of 3x3 tensor fields to the initial material basis.
FE2.initialize(assembly, pb)	Initialize the constitutive law for the current problem.
FE2.local2global_H(H[, assembly, current])	Rotate a material stiffness to global axes using Simcoon.
FE2.local2global_strain(strain[, assembly, ...])	Express engineering-strain vector(s) from material to global axes.
FE2.local2global_stress(stress[, assembly, ...])	Express stress Voigt vector(s) from material to global axes.
FE2.reset()	Reset the constitutive law.
FE2.set_density(density)	Set the mass density associated with this mechanical material.
FE2.set_local_frame(local_frame[, location])	Define the material coordinate frame.
FE2.set_start(assembly, pb)	Begin a new time iteration.
FE2.to_start(assembly, pb)	Restart the current time iteration.
FE2.update(assembly, pb)	Update the constitutive law for the current problem state.

FE2.is_isotropic
FE2.manages_material_frame
FE2.name	Name of the constitutive law.
FE2.is_initialized	Tag set to True once the law is intialized.