mixedload

MixedLoadControl

Bases: MicromechanicalBase

Mixed load control algorithm for micro-mechanical models.

checkConvergence

checkConvergence(
    dsig: ndarray,
    deps: ndarray,
    err0: float,
    erri: float,
    sv0: StateVariable,
    sv: StateVariable,
) -> Tuple[float, bool]

Check if the mixed load control algorithm is converged

RETURNS	DESCRIPTION
Tuple[float, bool]	The error and a boolean indicating if the algorithm is converged.

increment

increment(
    dx: ndarray,
    x: ndarray,
    S: ndarray,
    E: ndarray,
    G: ndarray,
    sv0: StateVariable,
    sv: StateVariable,
) -> ndarray

linearize

linearize(
    dx: ndarray,
    S: ndarray,
    E: ndarray,
    G: ndarray,
    sv0: StateVariable,
    sv: StateVariable,
) -> Tuple[ndarray, ndarray, ndarray]

Calculate the incremental stress/strain tensor based on mixed load control.

PARAMETER	DESCRIPTION
dx	The mixed unbalanced load increment. TYPE: ndarray
S	The stress control matrix. TYPE: ndarray
E	The strain control matrix. TYPE: ndarray
G	The ignored control matrix. TYPE: ndarray
sv0	The state variables at the beginning of the increment. TYPE: StateVariable
sv	The state variables. TYPE: StateVariable

RETURNS	DESCRIPTION
ndarray	The elastic stiffness matrix.
ndarray	The stress increment.
ndarray	The strain increment.