Context:
You can sum field output over specified frames, and you can find the minimum
or maximum values over specified frames. You can display field output that you
have created in the same ways as output database field output variables: in the
form of a deformed, contour, or symbol plot; by probing any model or
X–Y plot; as X–Y data
obtained along a path through your model; or in a tabular report. Field output
that you have created is saved in the session step until you end the session or
close the output database from which the field output originates. You can also
save the field output to the output database, in which case you must open the
output database with write privileges.
Note:
Field output created using complex results will contain only the real
portion of the data. You cannot create field output that includes the imaginary
part of complex results.
Locate the options for creating field output from frames.
From the main menu bar, select
.
The Create Field Output From Frames dialog box
appears.
By default, the Frames and
Fields pages in this dialog box are empty.
Select the operation you wish to perform from the list in the
Operation field.
Click
to select the frames that will be included in the operation.
The Add Frames dialog box appears.
Select the analysis step from the list in the
Step field.
A list of the available frames for that step appears.
Select the individual frames you would like to include in the
operation (see
Selecting multiple items from lists and tables,
for more information), or click Select All to include
all the available frames.
Click OK or Apply in the
Add Frames dialog box.
The frames you selected appear in the Frames
field of the Create Field Output From Frames dialog box.
You can use the
button (Remove Selected) and
button (Remove All) at the bottom of the
Frames field to modify your frame selections as needed.
You can also continue to add frames from the Add Frames
dialog box.
If you have chosen the sum operation, a Scale
Factor column also appears in the Frames field
of the Create Field Output from Frames dialog box. The
default scale factor for every frame is 1.0. You can modify the scale factor
for a selected frame by clicking in the Scale Factor
column and entering a new scale factor value.
Click the Fields tab in the Create
Field Output From Frames dialog box to select the field output that
will be included in the operation.
The field output variables available for the selected frames are
shown, along with information on the output variable type (tensor, vector, or
scalar). If you have chosen the minimum or maximum operation, the
invariant/component information is also available for tensor and vector
variables. By default, all the available output variables have a check mark in
the Select column.
-
Click in the Select column to unselect the
output variables you do not wish to include in the operation.
-
If you have chosen the minimum or maximum operation, you can click
in the Invariant/Component column and select the invariant
or component that you wish to use to determine the minimum or maximum field
results from the list that appears at the right. For example, if you select the
Mises invariant for a stress variable,
Abaqus/CAE
creates a new stress field output variable in which the stress tensor at each
point is obtained from the frame at which the maximum Mises value occurs
(within the list of frames selected in Step 5).
-
Use the Select All, Unselect
All, and Default buttons to modify your field
output selections as needed.
You can accept the default frame description provided by
Abaqus/CAE,
or you can supply your own in the Frame description field.
By default,
Abaqus/CAE
does not provide a load case name for the new field output; if your new field
output represents an additional load case in your analysis, you can supply a
name in the Load case name field. This name will be used
only for organizational purposes.
Click OK in the Create Field Output
From Frames dialog box to create your new field output and to
dismiss the dialog box.
Abaqus
operates on the selected field output over the selected frames to create new
field output that is contained in a frame of the session step and available
from the Field Output dialog box. The descriptions of the
new variables indicate the operation by which they were derived. Current
results plots, if any, are not affected.
When you choose the minimum or maximum operation,
Abaqus
also creates a field output variable for each result indicating the frames from
which each minimum or maximum value was obtained. (The frames are identified by
their index in the list of selected frames.) This variable, named
outputVariable_Index, is available from the same
frame of the session step as the actual results of the minimum or maximum
operation and can be queried or plotted in the same way as other field output
variables.