Data

An analysis with COMPAS FEA2 is defined by a “model” (compas_fea2.model.Model) and a “problem” (compas_fea2.problem.Problem), with each many different sub-components.

All these components, and the model and problem themselves, are COMPAS data objects, and derive from a base FEA2 data class (compas_fea2.base.FEAData).

compas.data.Data
|_ compas_fea2.base.FEAData
    |_ compas_fea2.model.Model
    |_ compas_fea2.model.Node
    |_ compas_fea2.model.Element
        |_ ...
    |_ compas_fea2.model.Part
        |_ ...
    |_ compas_fea2.model.Material
        |_ ...
    |_ compas_fea2.model.Section
        |_ ...
    |_ compas_fea2.model.Constraint
        |_ ...
    |_ compas_fea2.model.Group
        |_ ...
    |_ compas_fea2.model.BoundaryCondition
        |_ ...
    |_ compas_fea2.model.InitialCondition
        |_ ...

compas.data.Data
|_ compas_fea2.base.FEAData
    |_ compas_fea2.problem.Problem
    |_ compas_fea2.problem.Step
        |_ ...
    |_ compas_fea2.problem.Load
        |_ ...
    |_ compas_fea2.problem.Displacement
        |_ ...

This means that all these components have the same base data infrastructure as all other COMPAS objects. They have a guid, a name, and general attributes.

>>> from compas_fea2.model import Node
>>> node = Node(name='node')
>>> node.name
'node'
>>> node.guid
...
>>> node.attributes
{}

The can be converted to data and serialised to a JSON string or file.

>>> node.to_data()
{'name': 'node', 'guid': ..., 'attributes': {}}
>>> node.to_jsonstring()
'{"name": "node", "guid": ..., "attributes": {}}'

The only difference from other COMPAS objects is their default name.

>>> node = Node()
>>> node.name
...