LoadControl Integrator

The LoadControl integrator is a static integration method that controls the applied load increment during analysis.

Description

This integrator is particularly suitable for:

• Static analysis with prescribed load patterns

• Cases where the load is applied in controlled increments

• Problems that require monitoring load-based response

• Nonlinear static analysis with load control

The LoadControl method applies load in predefined increments, allowing for step-by-step observation of structural response.

Parameters

The LoadControl integrator requires the following parameters:

Parameter	Description	Default	Notes
incr	Load factor increment	None	Required
num_iter	Number of iterations desired	1	Optional
min_incr	Minimum step size allowed	incr	Optional, defaults to incr value
max_incr	Maximum step size allowed	incr	Optional, defaults to incr value

Usage Example

# Create a LoadControl integrator with basic parameters
integrator = fm.analysis.integrators.create_integrator("loadcontrol", incr=0.1)

# Create a LoadControl integrator with custom step size limits
integrator = fm.analysis.integrators.create_integrator("loadcontrol",
                                                incr=0.1,
                                                num_iter=5,
                                                min_incr=0.05,
                                                max_incr=0.2)