Create or edit a substructure generation procedure
Display the Edit Step dialog box following the
procedure outlined in
Creating a step
(Procedure type:Linear perturbation;
Substructure generation), or
Editing a step.
On the Basic, Options, and
Damping tabbed pages, configure settings such as
substructure generation options and damping specifications.
Configure settings on the Basic tabbed page
In the Edit Step dialog box, display the
Basic tabbed page.
In the Description field, enter a short
description of the analysis step.
Abaqus
stores the text that you enter in the output database, and the text is
displayed in the state block by the Visualization module.
In the Substructure identifier field, enter an
integer between 1 and 999 that uniquely identifies this substructure in your
model.
Abaqus
prepends a Z to the number you specify when it stores the
substructure identifier in the model database.
If desired, toggle on Evaluate recovery matrix
for to enable selective recovery in your analysis, and do one the
following:
Select Whole model to enable selective
recovery for the entire model.
Select Region, and select a node set or
element set from the list to enable selective recovery for a single set in your
model.
Configure settings on the Options tabbed
page
In the Edit Step dialog box, display the
Options tabbed page.
From the Generation Options, do any of the
following:
Toggle on Compute gravity load vectors to
calculate the substructure's gravity load vectors during substructure
generation.
Toggle on Compute reduced mass matrix to
generate a reduced mass matrix for the substructure.
Toggle on Compute reduced structural damping
matrix to generate a reduced structural damping matrix for the
substructure.
Toggle on Compute reduced viscous damping
matrix to generate a reduced viscous damping matrix for the
substructure.
Toggle on Evaluate frequency-dependent properties at
frequency to evaluate frequency-dependent material properties in
substructure generation. If you toggle on this option, you can also specify the
custom frequency for the frequency-dependent properties.
If you want to specify retained eigenmodes for generation of a coupled
acoustic-structural substructure, toggle on Specify retained
eigenmodes by, then select either Mode range or
Frequency range.
If you are specifying retained eigenmodes by mode range, enter the
following data in the Data table to generate the list of
eigenmodes:
Start Mode
The first mode number.
End
Mode
The end mode number.
Increment
The increment in mode numbers between the start and end modes.