UniversalThresholdFracture

UniversalThresholdFracture is DefaultUniversalToughness:
    .doc: """
    Define a threshold fracture model for each constrained degree of freedom for a Universal.
    Each dimension can then fail individually at their fracture points.
    """
    default_limit is Real: 10000.0
    along_main becomes Physics.Interactions.Toughness.ThresholdFracture:
        fracture_point: default_limit
    along_normal becomes Physics.Interactions.Toughness.ThresholdFracture:
        fracture_point: default_limit
    along_cross becomes Physics.Interactions.Toughness.ThresholdFracture:
        fracture_point: default_limit
    around_main becomes Physics.Interactions.Toughness.ThresholdFracture:
        fracture_point: default_limit