pyHarm.Elements.NodeToNodeElements.DLFTElements.DLFT3D

Attributes

DLFTFriction3DJacobian_jax

Classes

DLFT3D

This element is a combination of the unilateral DFLT gap element and the DLFT friction element in the perpendicular directions.

Functions

DLFTFriction3DResidual_jax(x, om, Rlin, nbSub, Pdir, ...)

Module Contents

pyHarm.Elements.NodeToNodeElements.DLFTElements.DLFT3D.DLFTFriction3DResidual_jax(x, om, Rlin, nbSub, Pdir, Pslave, Pmaster, mu, N0, g, eps, DFT, DTF)
pyHarm.Elements.NodeToNodeElements.DLFTElements.DLFT3D.DLFTFriction3DJacobian_jax: Callable = None
class pyHarm.Elements.NodeToNodeElements.DLFTElements.DLFT3D.DLFT3D(nh: int | list[int], nti: int, name: str, data: dict, CS: pyHarm.CoordinateSystem.CoordinateSystem, dynop: dict[str, numpy.ndarray] | None = None)

Bases: pyHarm.Elements.NodeToNodeElements.DLFTElements.DLFTElement.DLFTElement

This element is a combination of the unilateral DFLT gap element and the DLFT friction element in the perpendicular directions.

N0

normal force applied at contact.

Type:

float

g

gap value.

Type:

float

eps

penalty parameter of the DLFT method.

Type:

foat

mu

friction coefficient.

Type:

foat

factory_keyword: str = 'DLFT3D'

keyword that is used to call the creation of this class in the system factory.

Type:

str

__post_init__()
adim(lc, wc)

Modifies the element properties according to the characteristic length and angular frequency.

eps

modified penalty coefficient to apply according to the characteristic parameters.

Type:

float

g

modified gap value according to the characteristic parameters.

Type:

float

flag_adim

True if equations are to be adimensionalized

Type:

bool

evalResidual(xg, om, Rglin=None)

Computes the residual.

Parameters:

  • xg (np.ndarray) – full displacement vector.

  • om (float) – angular frequency value.

  • Rglin (np.ndarray) – Residual vector of all the linear element contributions.

Returns:

residual vector.

Return type:

np.ndarray

_evalJaco_jax(xg, om, Rglin=None)
evalJacobian(xg, om, Rglin=None, dJgdxlin=None, dJgdomlin=None)

Computes the jacobians.

Parameters:

  • xg (np.ndarray) – full displacement vector.

  • om (float) – angular frequency value.

  • Rglin (np.ndarray) – Residual vector of all the linear element contributions.

  • dJgdxlin (np.ndarray) – Jacobian with respect to displacement of all the linear element contributions.

  • dJgdomlin (np.ndarray) – Jacobian with respect to angular frequency of all the linear element contributions.

Returns:

Jacobian with respect to displacement. np.ndarray: Jacobian with respect to angular frequency.

Return type:

np.ndarray