Sub SetNLDiagram()
Dim model As RFEM5.model
Set model = GetObject(, "RFEM5.Model")
On Error GoTo e
Dim iApp As RFEM5.Application
Set iApp = model.GetApplication
iApp.LockLicense
iApp.Show
Dim iModelData As RFEM5.iModelData
Set iModelData = model.GetModelData
' modify member end release
' set nonlinearity "Diagram" for x translation
Dim iMemHing As RFEM5.IMemberHinge
Set iMemHing = iModelData.GetMemberHinge(1, AtNo)
Dim memHing As RFEM5.MemberHinge
memHing = iMemHing.GetData()
memHing.TranslationalConstantX = 0
memHing.TranslationalNonlinearityX = WorkingDiagramType
' Set new data
iModelData.PrepareModification
iMemHing.SetData memHing
iModelData.FinishModification
' create diagram
Dim tbl1() As Double
ReDim tbl1(1, 1)
tbl1(0, 0) = 0 ' u-x
tbl1(0, 1) = 0 ' P-x
tbl1(1, 0) = 0.02 ' u-x (mm)
tbl1(1, 1) = 2000 ' P-x (N)
Dim nldHing As RFEM5.NonlinearityDiagram
nldHing.ForceType = StiffnessDiagramForceType.NoneStiffnessForce
nldHing.PositiveZoneType = DiagramAfterLastStepType.TearingDiagramType
nldHing.PositiveZone = tbl1
nldHing.Symmetric = True
Dim iNldiag As RFEM5.INonlinearityDiagram
Set iNldiag = iMemHing.GetNonlinearity(AlongAxisX)
' Set new data
iModelData.PrepareModification
iNldiag.SetData nldHing
iModelData.FinishModification
e: If Err.Number <> 0 Then MsgBox Err.description, , Err.Source
model.GetApplication.UnlockLicense
End Sub