I'm not able to access named selections in PyDPF-Core

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cardiac.scripter
cardiac.scripter Member Posts: 13
First Comment
**
edited July 9 in Structures

Hi,

I am using LS-Dyna.

I have several node sets in my input file. See below a screenshot from LS-PrePost

However, when I print available named selections in pydpf-core I get nothing. I'm following this documentation: https://dpf.docs.pyansys.com/version/stable/examples/00-basic/09-results_over_space_subset.html

This is my code:

data_sources = dpf.DataSources()
data_sources.set_result_file_path(d3plot[0], "d3plot")

model  = dpf.Model(data_sources)
print(model)

print("Named Selections: ", model.metadata.available_named_selections)

and this is the output:

DPF Model
------------------------------
Unknown analysis
Unit system: Undefined
Physics Type: Unknown
Available results:
     -  global_kinetic_energy: TimeFreq_steps Global Kinetic Energy
     -  global_internal_energy: TimeFreq_steps Global Internal Energy
     -  global_total_energy: TimeFreq_steps Global Total Energy
...
     -  ep_activ__time: Nodal Ep Activ. Time
     -  ep_ca2+_concentration: Nodal Ep Ca2+ Concentration
     -  : Nodal
------------------------------
DPF  Meshed Region:
  168041 nodes
  858861 elements
  Unit:
  With solid (3D) elements, shell (2D) elements, beam (1D) elements
------------------------------
DPF  Time/Freq Support:
  Number of sets: 81
Cumulative     Frequency ()   LoadStep       Substep
1              0.000000       1              1
2              10.000000      2              1
3              20.000000      3              1

...

79             780.000000     79             1
80             790.000000     80             1
81             800.000000     81             1

Named Selections:  []

You can see that the named selections are empty.

My goal is to extract the movement of a specific part. I have saved that part as a node set. If there are any other methods that would be great.

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Best Answer

  • cardiac.scripter
    cardiac.scripter Member Posts: 13
    First Comment
    **
    Answer ✓

    Thanks for your reply. I constructed a work around by storing the node sets from the input file and scoping in PyDPF-Core.

Answers

  • Mike Rife
    Mike Rife Member, Employee Posts: 60
    Second Anniversary 10 Comments First Answer 5 Likes
    ✭✭✭✭

    Hi @cardiac.scripter the d3plot file does not contain part information; just results for the whole model. Looking at the pull request on the PyDPF GutHub site I see one that looks to address this (not a developer but I think I am interpretting the PR correctly...maybe not).
    Mike

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