ElementRegion

The ElementRegion class defines a region based on a set of specific elements or an element range. This allows you to apply damping and other properties to particular finite elements in your model.

Parameters

damping: Optional damping instance to associate with the region
elements: List of specific element IDs to include in the region
element_range: Alternative to elements; defines a range of elements [start_element_id, end_element_id]
element_only: Boolean flag indicating whether to include only the elements (default: False)

Usage

Creating an ElementRegion with specific elements:

from femora.components.Region.regionBase import RegionManager

region_manager = RegionManager()

# Create a region with specific elements
element_region = region_manager.create_region(
    'ElementRegion',
    elements=[1, 2, 3, 4, 5]
)

Creating an ElementRegion with an element range:

# Create a region with an element range (elements 1 through 100)
element_range_region = region_manager.create_region(
    'ElementRegion',
    element_range=[1, 100]
)

Associating damping with an ElementRegion:

from femora.components.Damping.dampingBase import DampingManager

damping_manager = DampingManager()

# Create a damping instance
rayleigh_damping = damping_manager.create_damping(
    'rayleigh',
    alphaM=0.05,
    betaK=0.001
)

# Create a region with elements and damping
element_region = region_manager.create_region(
    'ElementRegion',
    damping=rayleigh_damping,
    elements=[1, 2, 3, 4, 5],
    element_only=True
)

Notes

You cannot specify both elements and element_range simultaneously
The element_only flag is used to indicate that only the elements themselves are included (not associated nodes)
When constructing with element_range, provide exactly two values: [start_id, end_id]