cFrameObjSetReleases Method

Makes end release and partial fixity assignments to frame objects.

Namespace:  ETABS2016
Assembly:  ETABS2016 (in ETABS2016.dll) Version: 16.0.0.0 (16.0.0.0)
Syntax
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int SetReleases(
	string Name,
	ref bool[] II,
	ref bool[] JJ,
	ref double[] StartValue,
	ref double[] EndValue,
	eItemType ItemType = eItemType.Objects
)

Parameters

Name
Type: SystemString
The name of an existing frame object or group, depending on the value of the ItemType item.
II
Type: SystemBoolean
JJ
Type: SystemBoolean
These is an array of six booleans indicating the J-End releases for the frame object.
  • ii(0) and jj(0) = U1 release
  • ii(1) and jj(1) = U2 release
  • ii(2) and jj(2) = U3 release
  • ii(3) and jj(3) = R1 release
  • ii(4) and jj(4) = R2 release
  • ii(5) and jj(5) = R3 release
StartValue
Type: SystemDouble
These is an array of six values indicating the I-End partial fixity springs for the frame object.
  • StartValue(0) and EndValue(0) = U1 partial fixity [F/L]
  • StartValue(1) and EndValue(1) = U2 partial fixity [F/L]
  • StartValue(2) and EndValue(2) = U3 partial fixity [F/L]
  • StartValue(3) and EndValue(3) = R1 partial fixity [FL/rad]
  • StartValue(4) and EndValue(4) = R2 partial fixity [FL/rad]
  • StartValue(5) and EndValue(5) = R3 partial fixity [FL/rad]
EndValue
Type: SystemDouble
These is an array of six values indicating the J-End partial fixity springs for the frame object.
  • StartValue(0) and EndValue(0) = U1 partial fixity [F/L]
  • StartValue(1) and EndValue(1) = U2 partial fixity [F/L]
  • StartValue(2) and EndValue(2) = U3 partial fixity [F/L]
  • StartValue(3) and EndValue(3) = R1 partial fixity [FL/rad]
  • StartValue(4) and EndValue(4) = R2 partial fixity [FL/rad]
  • StartValue(5) and EndValue(5) = R3 partial fixity [FL/rad]
ItemType (Optional)
Type: ETABS2016eItemType
This is one of the following items in the eItemType enumeration:
  • Object = 0
  • Group = 1
  • SelectedObjects = 2

If this item is Objects, the assignment is made to the frame object specified by the Name item.

If this item is Group, the assignment is made to all frame objects in the group specified by the Name item.

If this item is SelectedObjects, the assignment is made to all selected frame objects and the Name item is ignored.

Return Value

Type: Int32
Returns zero if the assignments are successfully retrieved, otherwise it returns a nonzero value.
Remarks
Partial fixity assignments are made to degrees of freedom that have been released only.

Some release assignments would cause instability in the model. An error is returned if this type of assignment is made. Unstable release assignments include the following:

  • U1 released at both ends
  • U2 released at both ends
  • U3 released at both ends
  • R1 released at both ends
  • R2 released at both ends and U3 at either end
  • R3 released at both ends and U2 at either end

Examples
VB
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Public Sub Example()
   Dim SapModel As cSapModel
   Dim EtabsObject As cOAPI
   Dim ret As Integer = -1
   Dim ii() As Boolean
   Dim jj() As Boolean
   Dim StartValue() As Double
   Dim EndValue() As Double

'create ETABS object
   EtabsObject = CreateObject("CSI.ETABS.API.ETABSObject")

'start ETABS application
  ret = EtabsObject.ApplicationStart()

'create SapModel object
   SapModel = EtabsObject.SapModel

'initialize model
   ret = SapModel.InitializeNewModel()

'create steel deck template model
   ret = SapModel.File.NewSteelDeck(4, 12, 12, 4, 4, 24, 24)

'assign end releases
   ReDim ii(5)
   ReDim jj(5)
   ReDim StartValue(5)
   ReDim EndValue(5)
   ii(5) = True
   jj(5) = True
   ret = SapModel.FrameObj.SetReleases("13", ii, jj, StartValue, EndValue)

'close ETABS
   EtabsObject.ApplicationExit(False)

'clean up variables
   SapModel = Nothing
   EtabsObject = Nothing

End Sub
See Also