Learning Forum

[gokbayrak]

I am trying to get stress values from nodes on a named selection by using DPF script below and it gives values also for mid nodes.

Do you know how to exclude mid nodes ? Thanks in advance.

import mech_dpf

import Ans.DataProcessing as dpf

import Ans.DataProcessing.operators as ops

mech_dpf.setExtAPI(ExtAPI)

my_data_source = mech_dpf.GetDataSources()

ns = ops.scoping.on_named_selection()

ns.inputs.data_sources.Connect(my_data_source)

ns.inputs.requested_location.Connect("Nodal")

ns.inputs.named_selection_name.Connect("MY_NS")

stress_op = ops.result.stress_X()

stress_op.inputs.data_sources.Connect(my_data_source)

stress_op.inputs.mesh_scoping.Connect(ns.outputs.mesh_scoping)

my_stress = stress_op.outputs.fields_container.GetData()

my_stress[0].Data

[ErKo]

Hi

They way now using Nodal results is to exclude them (mid-side nodes) from the MY_NS named selection.
This is easily done within the worksheet (say that face had all nodes, but mid-side where removed):
All the best

Erik

[gokbayrak]

Thanks for the reply ekostson
This manual selection is not an option for me because i have lots of face named selections and somehow i need to do that in scripting window.
I searched DPF docs but could not find a solution

[ErKo]

Hi - no worries - glad to be of help.

There is no other way I believe since as we said you are using ns.inputs.requested_location.Connect("Nodal")
so nodal results and it will look at every node in your named selection, thus it will get stresses for these nodes in the NS, and hence why we need to remove them (mid-side) which is easily done as shown from the NS.

One can automate this (above removal of mid-side using the named selection worksheet) using the act api call for the worksheet for adding rows and remove nodes in the worksheet of the named selection (below is a sample code)model = ExtAPI.DataModel.Project.Model # reference model
nsall=ExtAPI.DataModel.Project.Model.NamedSelections.Children
for ns in nsall:
objId = ns.ObjectId # reference ID of named selection object for future use
DataModel.GetObjectById(objId).ScopingMethod=GeometryDefineByType.Worksheet
DataModel.GetObjectById(objId).GenerationCriteria.Add(None)