DisplacementControlIntegrator

DisplacementControlIntegrator(node_tag: int, dof: int, incr: float, num_iter: int = 1, min_incr: Optional[float] = None, max_incr: Optional[float] = None)

Bases: StaticIntegrator

Displacement control integrator for static analysis.

DisplacementControlIntegrator increments a specific degree of freedom at a target node to control the static simulation. This is especially useful for capturing softening behavior.

Tcl form

integrator DisplacementControl <nodeTag> <dof> <incr> <numIter> <minIncr> <maxIncr>

Example

from femora.core.model import Model

model = Model()
integ = model.analysis.integrator.displacementcontrol(
    node_tag=1,
    dof=1,
    incr=0.01,
    num_iter=1,
    min_incr=0.001,
    max_incr=0.1,
)

Create a DisplacementControl static integrator.

Parameters:

Name	Type	Description	Default
`node_tag`	`int`	ID tag of the controlling node.	required
`dof`	`int`	Degree of freedom (1-indexed) at the node that controls response.	required
`incr`	`float`	Initial displacement increment.	required
`num_iter`	`int`	Desired number of iterations in the solution algorithm.	`1`
`min_incr`	`Optional[float]`	Minimum allowable displacement increment. Defaults to `incr`.	`None`
`max_incr`	`Optional[float]`	Maximum allowable displacement increment. Defaults to `incr`.	`None`