IfcBoundaryEdgeCondition

Natural language names
Randbedingung an einer Kante
Boundary Edge Condition
Condition d'arête limite
Change log
ItemSPFXMLChangeDescription
IFC2x3 to IFC4
    IfcBoundaryEdgeCondition
      TranslationalStiffnessByLengthXMODIFIEDName changed from LinearStiffnessByLengthX to TranslationalStiffnessByLengthX.
Type changed from IfcModulusOfLinearSubgradeReactionMeasure to IfcModulusOfTranslationalSubgradeReactionSelect.
      TranslationalStiffnessByLengthYMODIFIEDName changed from LinearStiffnessByLengthY to TranslationalStiffnessByLengthY.
Type changed from IfcModulusOfLinearSubgradeReactionMeasure to IfcModulusOfTranslationalSubgradeReactionSelect.
      TranslationalStiffnessByLengthZMODIFIEDName changed from LinearStiffnessByLengthZ to TranslationalStiffnessByLengthZ.
Type changed from IfcModulusOfLinearSubgradeReactionMeasure to IfcModulusOfTranslationalSubgradeReactionSelect.
      RotationalStiffnessByLengthXMODIFIEDType changed from IfcModulusOfRotationalSubgradeReactionMeasure to IfcModulusOfRotationalSubgradeReactionSelect.
      RotationalStiffnessByLengthYMODIFIEDType changed from IfcModulusOfRotationalSubgradeReactionMeasure to IfcModulusOfRotationalSubgradeReactionSelect.
      RotationalStiffnessByLengthZMODIFIEDType changed from IfcModulusOfRotationalSubgradeReactionMeasure to IfcModulusOfRotationalSubgradeReactionSelect.
Semantic definitions at the entity
Entity definition

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 representing infinite stiffness is no longer valid and must not be used.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 definitions
#AttributeTypeCardinalityDescription G
2TranslationalStiffnessByLengthXIfcModulusOfTranslationalSubgradeReactionSelect? Translational stiffness value in x-direction of the coordinate system defined by the instance which uses this resource object.X
3TranslationalStiffnessByLengthYIfcModulusOfTranslationalSubgradeReactionSelect? Translational stiffness value in y-direction of the coordinate system defined by the instance which uses this resource object.X
4TranslationalStiffnessByLengthZIfcModulusOfTranslationalSubgradeReactionSelect? Translational stiffness value in z-direction of the coordinate system defined by the instance which uses this resource object.X
5RotationalStiffnessByLengthXIfcModulusOfRotationalSubgradeReactionSelect? Rotational stiffness value about the x-axis of the coordinate system defined by the instance which uses this resource object.X
6RotationalStiffnessByLengthYIfcModulusOfRotationalSubgradeReactionSelect? Rotational stiffness value about the y-axis of the coordinate system defined by the instance which uses this resource object.X
7RotationalStiffnessByLengthZIfcModulusOfRotationalSubgradeReactionSelect? Rotational stiffness value about the z-axis of the coordinate system defined by the instance which uses this resource object.X
Inherited definitions from supertypes
Entity inheritance IfcBoundaryCondition
Attribute inheritance
#AttributeTypeCardinalityDescriptionG
IfcBoundaryCondition
1NameIfcLabel? Optionally defines a name for this boundary condition.X
IfcBoundaryEdgeCondition
2TranslationalStiffnessByLengthXIfcModulusOfTranslationalSubgradeReactionSelect? Translational stiffness value in x-direction of the coordinate system defined by the instance which uses this resource object.X
3TranslationalStiffnessByLengthYIfcModulusOfTranslationalSubgradeReactionSelect? Translational stiffness value in y-direction of the coordinate system defined by the instance which uses this resource object.X
4TranslationalStiffnessByLengthZIfcModulusOfTranslationalSubgradeReactionSelect? Translational stiffness value in z-direction of the coordinate system defined by the instance which uses this resource object.X
5RotationalStiffnessByLengthXIfcModulusOfRotationalSubgradeReactionSelect? Rotational stiffness value about the x-axis of the coordinate system defined by the instance which uses this resource object.X
6RotationalStiffnessByLengthYIfcModulusOfRotationalSubgradeReactionSelect? Rotational stiffness value about the y-axis of the coordinate system defined by the instance which uses this resource object.X
7RotationalStiffnessByLengthZIfcModulusOfRotationalSubgradeReactionSelect? Rotational stiffness value about the z-axis of the coordinate system defined by the instance which uses this resource object.X
Formal representations
XML Specification
 <xs:element name="IfcBoundaryEdgeCondition" type="ifc:IfcBoundaryEdgeCondition" substitutionGroup="ifc:IfcBoundaryCondition" nillable="true"/>
 <xs:complexType name="IfcBoundaryEdgeCondition">
  <xs:complexContent>
   <xs:extension base="ifc:IfcBoundaryCondition">
    <xs:sequence>
     <xs:element name="TranslationalStiffnessByLengthX" nillable="true" minOccurs="0">
      <xs:complexType>
       <xs:group ref="ifc:IfcModulusOfTranslationalSubgradeReactionSelect"/>
      </xs:complexType>
     </xs:element>
     <xs:element name="TranslationalStiffnessByLengthY" nillable="true" minOccurs="0">
      <xs:complexType>
       <xs:group ref="ifc:IfcModulusOfTranslationalSubgradeReactionSelect"/>
      </xs:complexType>
     </xs:element>
     <xs:element name="TranslationalStiffnessByLengthZ" nillable="true" minOccurs="0">
      <xs:complexType>
       <xs:group ref="ifc:IfcModulusOfTranslationalSubgradeReactionSelect"/>
      </xs:complexType>
     </xs:element>
     <xs:element name="RotationalStiffnessByLengthX" nillable="true" minOccurs="0">
      <xs:complexType>
       <xs:group ref="ifc:IfcModulusOfRotationalSubgradeReactionSelect"/>
      </xs:complexType>
     </xs:element>
     <xs:element name="RotationalStiffnessByLengthY" nillable="true" minOccurs="0">
      <xs:complexType>
       <xs:group ref="ifc:IfcModulusOfRotationalSubgradeReactionSelect"/>
      </xs:complexType>
     </xs:element>
     <xs:element name="RotationalStiffnessByLengthZ" nillable="true" minOccurs="0">
      <xs:complexType>
       <xs:group ref="ifc:IfcModulusOfRotationalSubgradeReactionSelect"/>
      </xs:complexType>
     </xs:element>
    </xs:sequence>
   </xs:extension>
  </xs:complexContent>
 </xs:complexType>
EXPRESS Specification
ENTITY IfcBoundaryEdgeCondition
 SUBTYPE OF (IfcBoundaryCondition);
  TranslationalStiffnessByLengthX : OPTIONAL IfcModulusOfTranslationalSubgradeReactionSelect;
  TranslationalStiffnessByLengthY : OPTIONAL IfcModulusOfTranslationalSubgradeReactionSelect;
  TranslationalStiffnessByLengthZ : OPTIONAL IfcModulusOfTranslationalSubgradeReactionSelect;
  RotationalStiffnessByLengthX : OPTIONAL IfcModulusOfRotationalSubgradeReactionSelect;
  RotationalStiffnessByLengthY : OPTIONAL IfcModulusOfRotationalSubgradeReactionSelect;
  RotationalStiffnessByLengthZ : OPTIONAL IfcModulusOfRotationalSubgradeReactionSelect;
END_ENTITY;

Link to EXPRESS-G diagram EXPRESS-G diagram

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