How do I retrieve Von-Mises stress of nodes in a Named Selection using DPF-Core?

Ayush Kumar

I am using DPF-Core outside WB and there using CPython to retrieve Data from an RST of Harmonic analysis. The RST file contains a named-selection "MYNAMEDSELECTION" (a set of nodes). How do I retrieve the von-mises for each node at each frequency?

Ayush Kumar

import os
from ansys.dpf import core
from ansys.dpf.core import operators as ops

rst_file = os.path.join(r"\Path\to\my\rst\file")
model = core.Model(rst_file)

# Print solution object
print(model)

# Print available named selections
print('Named selections in model:', model.metadata.available_named_selections)

# Get number of result sets
tf = model.metadata.time_freq_support
print('Number of solution sets:', tf.n_sets)

# Restrict data to a specific named selection
ns_operator = ops.scoping.on_named_selection()
ns_operator.inputs.data_sources.connect(model)
ns_operator.inputs.named_selection_name.connect('MYNAMEDSELECTION')

# Get node numbers for nodes in named selection
mesh_data = ns_operator.outputs.mesh_scoping.get_data()
print(mesh_data.ids)

# Extract data on the named selection
equivalent_stress = ops.result.stress_von_mises(data_sources=model)

# Create list for result sets
freq_ids = list(range(1, model.metadata.time_freq_support.n_sets+1))

# Restrict scoping to named selection
equivalent_stress.inputs.mesh_scoping.connect(ns_operator.outputs.mesh_scoping)
equivalent_stress.inputs.time_scoping.connect(freq_ids)

fields = equivalent_stress.outputs.fields_container.get_data()

for field in fields:
    print(field.data)