 | Randbedingung an einer Fläche |
 | Boundary Face Condition |
 | Condition de face limite |
| Item | SPF | XML | Change | Description | IFC2x3 to IFC4 4.0.0.0 |
|---|---|---|---|---|
| IfcBoundaryFaceCondition | ||||
| TranslationalStiffnessByAreaX | MODIFIED | Name changed from LinearStiffnessByAreaX to TranslationalStiffnessByAreaX. Type changed from IfcModulusOfSubgradeReactionMeasure to IfcModulusOfSubgradeReactionSelect. | ||
| TranslationalStiffnessByAreaY | MODIFIED | Name changed from LinearStiffnessByAreaY to TranslationalStiffnessByAreaY. Type changed from IfcModulusOfSubgradeReactionMeasure to IfcModulusOfSubgradeReactionSelect. | ||
| TranslationalStiffnessByAreaZ | MODIFIED | Name changed from LinearStiffnessByAreaZ to TranslationalStiffnessByAreaZ. Type changed from IfcModulusOfSubgradeReactionMeasure to IfcModulusOfSubgradeReactionSelect. | IFC2x3 to IFC4 4.0.0.0 | |
| IfcBoundaryFaceCondition | ||||
| TranslationalStiffnessByAreaX | MODIFIED | Name changed from LinearStiffnessByAreaX to TranslationalStiffnessByAreaX. Type changed from IfcModulusOfSubgradeReactionMeasure to IfcModulusOfSubgradeReactionSelect. | ||
| TranslationalStiffnessByAreaY | MODIFIED | Name changed from LinearStiffnessByAreaY to TranslationalStiffnessByAreaY. Type changed from IfcModulusOfSubgradeReactionMeasure to IfcModulusOfSubgradeReactionSelect. | ||
| TranslationalStiffnessByAreaZ | MODIFIED | Name changed from LinearStiffnessByAreaZ to TranslationalStiffnessByAreaZ. Type changed from IfcModulusOfSubgradeReactionMeasure to IfcModulusOfSubgradeReactionSelect. |
Describes linearly elastic support conditions or connection conditions.
Applicability:
HISTORY New entity in IFC2x2.
IFC 2x4 change: Attributes LinearStiffnessX/Y/Z renamed to TranslationalStiffnessX/Y/Z.
IFC4 change All attribute data types changed from numeric to SELECT between Boolean and numeric. Stiffnesses may now also be negative, for example to capture destabilizing effects in boundary conditions. The IFC2x3 convention of -1. representing infinite stiffness is no longer valid and must not be used. Infinite stiffness, i.e. fixed supports, are now modeled by the Boolean value TRUE.
| # | Attribute | Type | Cardinality | Description | G |
|---|---|---|---|---|---|
| 2 | TranslationalStiffnessByAreaX | IfcModulusOfSubgradeReactionSelect | ? | Translational stiffness value in x-direction of the coordinate system defined by the instance which uses this resource object. | X |
| 3 | TranslationalStiffnessByAreaY | IfcModulusOfSubgradeReactionSelect | ? | Translational stiffness value in y-direction of the coordinate system defined by the instance which uses this resource object. | X |
| 4 | TranslationalStiffnessByAreaZ | IfcModulusOfSubgradeReactionSelect | ? | Translational stiffness value in z-direction of the coordinate system defined by the instance which uses this resource object. | X |
| # | Attribute | Type | Cardinality | Description | G |
|---|---|---|---|---|---|
| IfcBoundaryCondition | |||||
| 1 | Name | IfcLabel | ? | Optionally defines a name for this boundary condition. | X |
| IfcBoundaryFaceCondition | |||||
| 2 | TranslationalStiffnessByAreaX | IfcModulusOfSubgradeReactionSelect | ? | Translational stiffness value in x-direction of the coordinate system defined by the instance which uses this resource object. | X |
| 3 | TranslationalStiffnessByAreaY | IfcModulusOfSubgradeReactionSelect | ? | Translational stiffness value in y-direction of the coordinate system defined by the instance which uses this resource object. | X |
| 4 | TranslationalStiffnessByAreaZ | IfcModulusOfSubgradeReactionSelect | ? | Translational stiffness value in z-direction of the coordinate system defined by the instance which uses this resource object. | X |
<xs:element name="IfcBoundaryFaceCondition" type="ifc:IfcBoundaryFaceCondition" substitutionGroup="ifc:IfcBoundaryCondition" nillable="true"/>
<xs:complexType name="IfcBoundaryFaceCondition">
<xs:complexContent>
<xs:extension base="ifc:IfcBoundaryCondition">
<xs:sequence>
<xs:element name="TranslationalStiffnessByAreaX" nillable="true" minOccurs="0">
<xs:complexType>
<xs:group ref="ifc:IfcModulusOfSubgradeReactionSelect"/>
</xs:complexType>
</xs:element>
<xs:element name="TranslationalStiffnessByAreaY" nillable="true" minOccurs="0">
<xs:complexType>
<xs:group ref="ifc:IfcModulusOfSubgradeReactionSelect"/>
</xs:complexType>
</xs:element>
<xs:element name="TranslationalStiffnessByAreaZ" nillable="true" minOccurs="0">
<xs:complexType>
<xs:group ref="ifc:IfcModulusOfSubgradeReactionSelect"/>
</xs:complexType>
</xs:element>
</xs:sequence>
</xs:extension>
</xs:complexContent>
</xs:complexType>
ENTITY IfcBoundaryFaceCondition
SUBTYPE OF (IfcBoundaryCondition);
TranslationalStiffnessByAreaX : OPTIONAL IfcModulusOfSubgradeReactionSelect;
TranslationalStiffnessByAreaY : OPTIONAL IfcModulusOfSubgradeReactionSelect;
TranslationalStiffnessByAreaZ : OPTIONAL IfcModulusOfSubgradeReactionSelect;
END_ENTITY;
EXPRESS-G diagram
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