fedoo.constitutivelaw.CohesiveLaw

class CohesiveLaw(GIc=0.3, SImax=60, KI=10000.0, GIIc=1.6, SIImax=None, KII=50000.0, axis=2, name='')

Bilinear cohesive Law based on the Crisfield model

This constitutive Law should be associated with fedoo.weakform.InterfaceForce

Parameters:

  • GIc (scalar) – Toughness in Mode-I

  • SImax (scalar) – Maximal failure stress in Mode-I

  • KI (scalar) – Initial interface rigidity before damage

  • GIIc (scalar) – Toughness in Mode-II

  • SIImax (scalar) – Maximal failure stress in Mode-II

  • KII (scalar) – Initial interface rigidity before damage

  • axis (int) – axis should be eiter 0,1 or 2 (default). It define the normal direction to the failure plane the is used for mode identification. The axis is defined in local coordinate system.

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

__init__(GIc=0.3, SImax=60, KI=10000.0, GIIc=1.6, SIImax=None, KII=50000.0, axis=2, name='')

Methods

CohesiveLaw.get_K(assembly)

CohesiveLaw.get_all()

Return a dict with all the known ConstitutiveLaw (with a name).

CohesiveLaw.get_tangent_matrix(assembly)

CohesiveLaw.initialize(assembly, pb)

Initialize the constitutive law for the current problem.

CohesiveLaw.local2global_K(K)

CohesiveLaw.reset()

Reset the constitutive law.

CohesiveLaw.set_damage(assembly, value[, ...])

Initialize the damage variable to a certain value: array for multi-point initialization or scalar.

CohesiveLaw.set_start(assembly, pb)

Begin a new time iteration.

CohesiveLaw.to_start(assembly, pb)

Restart the current time iteration.

CohesiveLaw.update(assembly, pb)

Update the constitutive law for the current problem state.

CohesiveLaw.update_damage(assembly, U[, ...])

CohesiveLaw.update_irreversible_damage(assembly)

CohesiveLaw.name

Name of the constitutive law.