Learning Forum

[RustyJohnston]

I am working on a model and I want to count the number of nodes that are above or below a threshold value. I imagine this could be done somehow with scripting, but I don't know enough about that in ANSYS to do it on my own. I am sure that ansys already does something like this to make contour bands. Thanks in advance.

[Erik Kostson]

If we say have a displacement results and do export, we can filter in excel and se how many nodes there are.

Otherwise of course this is scriptable either with mechanical act, or with apdl command object .

As an example (for UZ displacement) the sample code below gets nodes that have absolute z-displacements larger than 0.009 m. These nodes are also added to a named selection and finally a result is scoped to these nodes only.

model=ExtAPI.DataModel.Project.Model # refer to model

reader = model.Analyses[0].GetResultsData() # get results data of first analysis in the tree

DispResults = reader.GetResult('U') # obtain stress results

DispResults.SelectComponents(["Z"]) # select direction

nd=ExtAPI.DataModel.Project.Model.Mesh.Nodes

stNdres=[]

stNd=[]

for i in range(1,nd):

tempres=DispResults.GetNodeValues(i)

if abs(tempres[0])>0.0090:

stNdres.append(abs(tempres[0]))

stNd.append(i)

reader.Dispose
temp_sel=ExtAPI.SelectionManager.CreateSelectionInfo(SelectionTypeEnum.MeshNodes)

nodeNs=ExtAPI.DataModel.Project.Model.AddNamedSelection temp_sel.Ids=stNd
nodeNs.Location=temp_sel

totDef=ExtAPI.DataModel.Project.Model.Analyses[0].Solution.AddTotalDeformation totDef.ScopingMethod=GeometryDefineByType.Component
totDef.Location=temp_sel
totDef.EvaluateAllResults
All the best

[RustyJohnston]

Appreciate the info. While this answers my question in general, it would have been helpful if the example was specific to what I was asking so that I could use it/experiment with it directly, rather than having to do a bunch of additional research to figure out the missing pieces to get to what I needed. Still, this is much further than I was before.