Non-linear Model Definition type function Cpython3

Robot Structural Analysis
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1

Hi all,

I am trying to create a Non-linear Model Definition of type force-displacement as “Example_function” shows, see figure below.

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image471×578 15.4 KB

The parameters of the model must be type function, see figure below.
The function needs two inputs, Origin and Expression.

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image458×568 21.8 KB

We want to create the script with CPython3, but it s not working properly. The script works until setting the model type to force-displacement. But, when setting Parameters it is not defining the Type: function, The Origin, and Expression.

import clr
clr.AddReference('ProtoGeometry')
from Autodesk.DesignScript.Geometry import *

from System import Environment
user = Environment.GetFolderPath(Environment.SpecialFolder.ApplicationData)

clr.AddReference(user+r"\Dynamo\Dynamo Core\2.11\packages\Structural Analysis for Dynamo\bin\RSA\Interop.RobotOM.dll")
from RobotOM import *
from System import Object
#The inputs to this node will be stored as a list in the IN variables.
#Define input
nodeSupportName = IN[0]
Model_name = IN[1]
C1= IN[2]
E1 = IN[3]
OP1 = IN[4]
nodeSupportData = IN[5]
application = RobotApplicationClass()
project = application.Project
structure = project.Structure
labels = structure.Labels
lab_serv=IRobotLabel

for i in range(len(nodeSupportName)):	
	KNLL = structure.Nodes.NonlinearLinks.Create(Model_name[i])
	KNLL.ModelType = IRobotNonlinearLinkModelType.I_NLMT_FORCE_DISPLACEMENT
	KNLL.SetCurveType(IRobotNonlinearLinkCurveType.I_NLCT_CUSTOM)
	#KNLL.SetAxisParams(IRobotNonlinearLinkSemiAxisType.I_NLSAT_ANY)
	KnnLP =  IRobotNonlinearLinkParamsCustomSegment(KNLL.SetAxisParams(IRobotNonlinearLinkSemiAxisType.I_NLSAT_ANY))
	
	KnnLP.Constant = C1[i]
	KnnLP.Expression = E1[i]
	KnnLP.OriginPoint = OP1[i]
	
	KNLL.SetParams(KnnLP)
	lab_serv=IRobotLabelServer
	node = IRobotLabel(labels.Create(IRobotLabelType.I_LT_NODE_SUPPORT, nodeSupportName[i]))
	#node =  robapp.Project.Structure.Labels.Create(IRobotLabelType.I_LT_NODE_SUPPORT, nodeSupportName[i]))
	relData = IRobotNodeSupportData(node.Data)
	relData.NonlinearModel.Set(IRobotDegreeOfFreedom.I_DOF_UX, KNLL.Name)
	relData.NonlinearModel.Set(IRobotDegreeOfFreedom.I_DOF_UY, KNLL.Name)
	relData.UZ = nodeSupportData[0]
	relData.RX = nodeSupportData[1]
	relData.RY = nodeSupportData[2]
	relData.RZ = nodeSupportData[3]
	
	labels.Store(node)		

application.Visible = True
application.Interactive = True
application.Project.ViewMngr.Refresh()
OUT = node

The file with input values is uploaded in Autodesk forum:
https://forums.autodesk.com/t5/robot-structural-analysis-forum/non-linear-model-definition-type-function-cpython3/m-p/11436044#M93009

Could you help me to check what is wrong with the script?
@sanzoghenzo @c.poupin @Jonathan.Olesen

Thank you in advance for your help.
Best regards,
Stefany