result:equivalent stress parameter
Last update: 31.07.2026Version: 0.0.0
Description
Read/compute element nodal equivalent stress parameter by calling the readers defined by the datasources.
- The 'requested_location' and 'mesh_scoping' inputs are processed to see if they need scoping transposition or result averaging. The resulting output fields have a 'Nodal', 'ElementalNodal' or 'Elemental' location.
- Once the need for averaging has been detected, the behavior of the combined connection of the 'split_shells' and 'shell_layer' pins is:
| Averaging is needed | 'split_shells' | 'shell_layer' | Expected output |
|---|---|---|---|
| No | Not connected/false | Not connected | Location as in the result file. Fields with all element shapes combined. All shell layers present. |
| No | true | Not connected | Location as in the result file. Fields split according to element shapes. All shell layers present. |
| No | true | Connected | Location as in the result file. Fields split according to element shapes. Only the requested shell layer present. |
| No | Not connected/false | Connected | Location as in the result file. Fields with all element shapes combined. Only the requested shell layer present. |
| Yes | Not connected/true | Not connected | Location as requested. Fields split according to element shapes. All shell layers present. |
| Yes | false | Not connected | Location as requested. Fields with all element shapes combined. All shell layers present. |
| Yes | false | Connected | Location as requested. Fields with all element shapes combined. Only the requested shell layer present. |
| Yes | Not connected/true | Connected | Location as requested. Fields split according to element shapes. Only the requested shell layer present. |
- The available 'elshape' values are:
| elshape | Related elements |
|---|---|
| 1 | Shell (generic) |
| 2 | Solid |
| 3 | Beam |
| 4 | Skin |
| 5 | Contact |
| 6 | Load |
| 7 | Point |
| 8 | Shell with 1 result across thickness (membrane) |
| 9 | Shell with 2 results across thickness (top/bottom) |
| 10 | Shell with 3 results across thickness (top/bottom/mid) |
| 11 | Gasket |
| 12 | Multi-Point Constraint |
| 13 | Pretension |
Supported file types
This operator supports the following keys (file formats) for each listed namespace (plugin/solver):
- mapdl: rst, rstp
Inputs
This table lists the input pins for this operator. Input pins define the data that the operator requires to perform its operation. Some inputs are required, while others are optional and provide additional configuration. Each parameter is detailed in the sections that follow the table.
| Pin number | Name | Status | Expected type(s) |
|---|---|---|---|
| 0 | time_scoping | scoping, int32, vector<int32>, double, field, vector<double> |
|
| 1 | mesh_scoping | scopings_container, scoping |
|
| 2 | fields_container | fields_container |
|
| 3 | streams_container | streams_container |
|
| 4 | data_sources | Required | data_sources |
| 7 | mesh | abstract_meshed_region, meshes_container |
|
| 9 | requested_location | string |
|
| 22 | read_beams | bool |
|
| 26 | split_shells | bool |
|
| 27 | shell_layer | int32 |
|
| 28 | extend_to_mid_nodes | bool |
time_scoping (Pin 0)
- Required: No
- Expected type(s):
scoping,int32,vector<int32>,double,field,vector<double>
time/freq values (use doubles or field), time/freq set ids (use ints or scoping) or time/freq step ids (use scoping with TimeFreq_steps location) required in output. To specify time/freq values at specific load steps, put a Field (and not a list) in input with a scoping located on "TimeFreq_steps". Linear time freq intrapolation is performed if the values are not in the result files and the data at the max time or freq is taken when time/freqs are higher than available time/freqs in result files. To get all data for all time/freq sets, connect an int with value -1.
mesh_scoping (Pin 1)
- Required: No
- Expected type(s):
scopings_container,scoping
nodes or elements scoping required in output. The output fields will be scoped on these node or element IDs. To figure out the ordering of the fields data, look at their scoping IDs as they might not be ordered as the input scoping was. The scoping's location indicates whether nodes or elements are asked for. Using scopings container allows you to split the result fields container into domains
fields_container (Pin 2)
- Required: No
- Expected type(s):
fields_container
Fields container already allocated modified inplace
streams_container (Pin 3)
- Required: No
- Expected type(s):
streams_container
result file container allowed to be kept open to cache data
data_sources (Pin 4)
- Required: Yes
- Expected type(s):
data_sources
result file path container, used if no streams are set
mesh (Pin 7)
- Required: No
- Expected type(s):
abstract_meshed_region,meshes_container
prevents from reading the mesh in the result files
requested_location (Pin 9)
- Required: No
- Expected type(s):
string
requested location Nodal, Elemental or ElementalNodal
read_beams (Pin 22)
- Required: No
- Expected type(s):
bool
elemental nodal beam results are read if this pin is set to true (default is false)
split_shells (Pin 26)
- Required: No
- Expected type(s):
bool
If true, this pin forces the results to be split by element shape, indicated by the presence of the 'elshape' label in the output. If false, the results for all elements shapes are combined. Default value is false if averaging is not required and true if averaging is required.
shell_layer (Pin 27)
- Required: No
- Expected type(s):
int32
If connected, this pin allows you to extract the result only on the selected shell layer(s). The available values are: 0: Top, 1: Bottom, 2: TopBottom, 3: Mid, 4: TopBottomMid.
extend_to_mid_nodes (Pin 28)
- Required: No
- Expected type(s):
bool
Compute mid nodes (when available) by averaging the neighbour corner nodes. Default: True
Outputs
This table lists the output pins for this operator. Output pins provide the results of the operator's computation and can be connected to inputs of other operators or retrieved for further processing. Each output is detailed in the sections that follow the table.
| Pin number | Name | Expected type(s) |
|---|---|---|
| 0 | fields_container | fields_container |
fields_container (Pin 0)
- Expected type(s):
fields_container
Configurations
This operator supports configuration options that modify its behavior.
mutex
- Expected type(s):
bool - Default value: false
If this option is set to true, the shared memory is prevented from being simultaneously accessed by multiple threads.
num_threads
- Expected type(s):
int32 - Default value: 0
Number of threads to use to run in parallel
run_in_parallel
- Expected type(s):
bool - Default value: true
Loops are allowed to run in parallel if the value of this config is set to true.
Scripting
This operator can be accessed through scripting interfaces using these identifiers.
Category: result
Plugin: core
Scripting name: eqv_stress_parameter
Full name: result.eqv_stress_parameter
Internal name: ENL_SEPL
License: None
Examples
These examples demonstrate how to use this operator in different programming environments. Each example shows how to instantiate the operator, connect the required inputs, and retrieve the output.
C++
#include "dpf_api.h"
ansys::dpf::Operator op("ENL_SEPL"); // operator instantiation
op.connect(0, my_time_scoping);
op.connect(1, my_mesh_scoping);
op.connect(2, my_fields_container);
op.connect(3, my_streams_container);
op.connect(4, my_data_sources);
op.connect(7, my_mesh);
op.connect(9, my_requested_location);
op.connect(22, my_read_beams);
op.connect(26, my_split_shells);
op.connect(27, my_shell_layer);
op.connect(28, my_extend_to_mid_nodes);
ansys::dpf::FieldsContainer my_fields_container = op.getOutput<ansys::dpf::FieldsContainer>(0);
CPython
import ansys.dpf.core as dpf
op = dpf.operators.result.eqv_stress_parameter() # operator instantiation
op.inputs.time_scoping.connect(my_time_scoping)
op.inputs.mesh_scoping.connect(my_mesh_scoping)
op.inputs.fields_container.connect(my_fields_container)
op.inputs.streams_container.connect(my_streams_container)
op.inputs.data_sources.connect(my_data_sources)
op.inputs.mesh.connect(my_mesh)
op.inputs.requested_location.connect(my_requested_location)
op.inputs.read_beams.connect(my_read_beams)
op.inputs.split_shells.connect(my_split_shells)
op.inputs.shell_layer.connect(my_shell_layer)
op.inputs.extend_to_mid_nodes.connect(my_extend_to_mid_nodes)
my_fields_container = op.outputs.fields_container()
IPython
import mech_dpf
import Ans.DataProcessing as dpf
op = dpf.operators.result.eqv_stress_parameter() # operator instantiation
op.inputs.time_scoping.Connect(my_time_scoping)
op.inputs.mesh_scoping.Connect(my_mesh_scoping)
op.inputs.fields_container.Connect(my_fields_container)
op.inputs.streams_container.Connect(my_streams_container)
op.inputs.data_sources.Connect(my_data_sources)
op.inputs.mesh.Connect(my_mesh)
op.inputs.requested_location.Connect(my_requested_location)
op.inputs.read_beams.Connect(my_read_beams)
op.inputs.split_shells.Connect(my_split_shells)
op.inputs.shell_layer.Connect(my_shell_layer)
op.inputs.extend_to_mid_nodes.Connect(my_extend_to_mid_nodes)
my_fields_container = op.outputs.fields_container.GetData()
Changelog
- Version 0.0.0: Initial release.