IfcBoundaryEdgeCondition
Definition
from IAI: The entity IfcBoundaryEdgeCondition
describes boundary conditions that can be applied to structural edge
connections, either directly for the connection (e.g. the connecting
edge) or for the relation between a structural member and the
connection.
The following conventions to
the values of the LinearStiffnessByLength[X,Y,Z]
and RotationalStiffnessByLength[X,Y,Z]
apply:
- value (-1.) represents an
infinitive large value – or a fixed connectivity with
infinitive stiffness
- value zero (0.), represents
no stiffness or a free connectivity
- any other value represents a
finitive stiffness or spring connectivity in that direction or rotation
- value NIL ($) represents an
unknown connectivity condition
NOTE: Instances of the entity IfcBoundaryEdgeCondition
are used e.g., to define the boundary condition for instances of IfcStructuralCurveConnection
or IfcRelConnectsStructuralMember
pointing to a structural curve connection.
HISTORY: New entity
in Release IFC2x edition 2.
EXPRESS specification:
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| ENTITY IfcBoundaryEdgeCondition
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Attribute definitions:
| LinearStiffnessByLengthX
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Linear stiffness value in x-direction of the coordinate system defined by the instance which uses this
resource object.
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| LinearStiffnessByLengthY
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Linear stiffness value in y-direction of the coordinate system defined by the instance which uses this
resource object.
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| LinearStiffnessByLengthZ
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Linear stiffness value in z-direction of the coordinate system defined by the instance which uses this
resource object.
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| RotationalStiffnessByLengthX
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Rotational stiffness value about the x-axis of the coordinate system defined by the instance which uses
this resource object.
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| RotationalStiffnessByLengthY
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Rotational stiffness value about the y-axis of the coordinate system defined by the instance which uses
this resource object.
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| RotationalStiffnessByLengthZ
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Rotational stiffness value about the z-axis of the coordinate system defined by the instance which uses
this resource object.
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Inheritance graph
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| ENTITY IfcBoundaryEdgeCondition;
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