IfcStructuralAnalysisModel
Definition from IAI: The IfcStructuralAnalysisModel
is used to assemble all information needed to represent a structural
analysis model. It encompasses certain general properties (such as
analysis type), references to all contained structural members,
structural supports or connecting members, the connection properties,
as well as loads and the respective load results.
NOTE: Important
functionalities for the description of an analysis model are derived
from existing IFC entities.
- from IfcSystem
it inherits the ability to couple the analysis model via the entity IfcRelServicesBuildings
to one or more IfcBuilding's as necessary.
- from IfcGroup it
inherits the inverse attribute IsGroupedBy pointing
to the relationship class IfcRelAssignsToGroup.
This provides the needed grouping mechanism to group structural members
(instances of IfcStructuralMember), and supports
(instances of IfcStructuralConnection) that belong
to a specific analysis model.
- NOTE loads (as instances of IfcStructualAction)
that belong to a specific analysis model are not included through the IsGroupedBy inverse attribute. Load are assigned
through the LoadedBy attribute relationship, using
load groups as a grouping mechanism.
- NOTE results (as instances of IfcStructualReaction)
that belong to a specific analysis model are not included through the IsGroupedBy inverse attribute. Results are assigned
through the HasResults attribute relationship,
using result groups as a grouping mechanism.
- from IfcGroup
it inherits the inverse attribute IsGroupedBy
pointing to the relationship class IfcRelAssignsToGroup.
This provides the needed grouping mechanism to group structural members
(instances of IfcStructuralMember), supports
(instances of IfcStructuralConnection), and loads
(instances of IfcStructualAction) that belong to a
specific analysis model.
- from IfcObject
it inherits the inverse attribute IsDecomposedBy
pointing to the relationship class IfcRelNests. It
provides the hierarchy between the separate (partial) analysis models.
HISTORY:
New entity in Release IFC2x Edition 2.
EXPRESS specification:
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| ENTITY IfcStructuralAnalysisModel
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Attribute definitions:
| PredefinedType
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Defines the type of the structural analysis model.
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| OrientationOf2DPlane
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If the selected model type, PredefinedType, describes an 2D system, the orientation is needed to define the upright direction to the focused plane (z-axes). This is needed because all data for the structural analysis model (structural members, structural activities) are defined by using 3-D space. The orientation is given in relation to the coordinate system of the project. When the PredefinedType is set to LOADING_3D, this value is not asserted (or should be ignored).
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| LoadedBy
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References to all load groups to be analyzed. All loads should be assigned to the IfcStructuralAnalysisModel through a (potentially nested) IfcStructuralLoadGroup.
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| HasResults
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References to all result groups available for this structural analysis model. All results should be assigned to the IfcStructuralAnalysisModel through a (potentially nested) IfcStructuralResultGroup.
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Inheritance graph
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| ENTITY IfcStructuralAnalysisModel;
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