math:expansion psd
Last update: 31.07.2026Version: 0.0.0
Description
Computes the PSD response for one-sigma solution.
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 | mode_shapes | Required | fields_container |
| 1 | static_shapes | fields_container |
|
| 2 | rel_rel_covar_matrix | Required | fields_container |
| 3 | stat_stat_covar_matrix | fields_container |
|
| 4 | rel_stat_covar_matrix | fields_container |
mode_shapes (Pin 0)
- Required: Yes
- Expected type(s):
fields_container
Fields container containing the mode shapes from modal analysis file: mode shapes for dynamic and pseudo-static displacements
static_shapes (Pin 1)
- Required: No
- Expected type(s):
fields_container
Fields container containing the static shapes (base excitations) from spectral analysis file
rel_rel_covar_matrix (Pin 2)
- Required: Yes
- Expected type(s):
fields_container
Fields container containing covariance matrices from a psd file: covariance matrix terms for displacement/velocity/acceleration mode-mode shapes
stat_stat_covar_matrix (Pin 3)
- Required: No
- Expected type(s):
fields_container
Fields container containing covariance matrices from a psd file: covariance matrix terms for displacement/velocity/acceleration static-static shapes
rel_stat_covar_matrix (Pin 4)
- Required: No
- Expected type(s):
fields_container
Fields container containing covariance matrices from a psd file: covariance matrix terms for displacement/velocity/acceleration mode-static shapes
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 | psd | fields_container |
psd (Pin 0)
- Expected type(s):
fields_container
PSD solution per label
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: math
Plugin: core
Scripting name: expansion_psd
Full name: math.expansion_psd
Internal name: expansion::psd
License: any_dpf_supported_increments
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("expansion::psd"); // operator instantiation
op.connect(0, my_mode_shapes);
op.connect(1, my_static_shapes);
op.connect(2, my_rel_rel_covar_matrix);
op.connect(3, my_stat_stat_covar_matrix);
op.connect(4, my_rel_stat_covar_matrix);
ansys::dpf::FieldsContainer my_psd = op.getOutput<ansys::dpf::FieldsContainer>(0);
CPython
import ansys.dpf.core as dpf
op = dpf.operators.math.expansion_psd() # operator instantiation
op.inputs.mode_shapes.connect(my_mode_shapes)
op.inputs.static_shapes.connect(my_static_shapes)
op.inputs.rel_rel_covar_matrix.connect(my_rel_rel_covar_matrix)
op.inputs.stat_stat_covar_matrix.connect(my_stat_stat_covar_matrix)
op.inputs.rel_stat_covar_matrix.connect(my_rel_stat_covar_matrix)
my_psd = op.outputs.psd()
IPython
import mech_dpf
import Ans.DataProcessing as dpf
op = dpf.operators.math.expansion_psd() # operator instantiation
op.inputs.mode_shapes.Connect(my_mode_shapes)
op.inputs.static_shapes.Connect(my_static_shapes)
op.inputs.rel_rel_covar_matrix.Connect(my_rel_rel_covar_matrix)
op.inputs.stat_stat_covar_matrix.Connect(my_stat_stat_covar_matrix)
op.inputs.rel_stat_covar_matrix.Connect(my_rel_stat_covar_matrix)
my_psd = op.outputs.psd.GetData()
Changelog
- Version 0.0.0: Initial release.