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The Compute command is most often applied to Analysis Case Solutions
(which are particular types of objects sets). In this case, it generates
the analysis case solution, along with partial results for all objects
involved in the definition of the Analysis Case.
The primary Static Solution Computation result consists of a
displacement
vector whose components represent the values of the system degree of
freedom. This
result can be further processed to produce other results such as stresses,
reaction forces and so forth.
The program can compute simultaneously several Solution objects sets, with optimal
parallel computation whenever applicable.
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Avoid having CATAnalysis documents automatically saved. For
this, go to Tools->Options->General (menu bar) and
de-activate the Automatic save every xx minutes option.
Otherwise, on some models, each computation will be followed by a Save,
thus making temporary data become persistent data.
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This task shows how to compute a
Static Case Solution.
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You can use the Sample08.CATAnalysis
document from the samples directory for this
task.
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1. Click the Compute icon  .
The Compute dialog box is displayed.
The combo box allows you to choose between several options for the set
of objects to update:
 | All: all the objects defined in the analysis features tree will be
computed. |
| Mesh Only: the preprocessing parts and connections will be meshed. The
preprocessing data (loads, restraints and so forth) will be applied
onto the mesh.
Capability is only available
with the ELFINI Structural Analysis product: for your
information, in case the Mesh only option was previously activated,
you will then be able to visualize the applied data on the mesh by
using the Visualization on Mesh option (contextual
menu)  |
| Analysis Case Solution Selection: only a selection of user-specified
Analysis Case Solutions will be computed, with an optimal parallel
computation strategy.
This capability is only available
with the ELFINI Structural Analysis product
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| Selection by Restraint: only the selected characteristics
will be computed (Properties, Restraints, Loads, Masses). |
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The Preview switch allows you to obtain an
estimate of the Time and Memory required to perform the computation, prior
to triggering the actual computation.
2. Select All (or Analysis Case Solution
Selection).
In this case, the program will compute by default all objects up to (and
including) the Static Case Solution in the
analysis features tree.
3. Set the Preview switch to ON and click OK. The estimates are displayed in the Preview dialog box. You can proceed
with the computation or choose to postpone it.
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4. To launch the computation, click Yes.
The Progress Bar dialog box provides a series of status messages (Meshing,
Factorization, Solution) that inform you of the
degree of advancement of the computation process.
The Static Analysis Solution is computed and can be visualized. |
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Upon successful completion of the computation, the FEM mesh
is visualized on your part, and the status of all objects in the analysis
specification tree up to the Static Case Solution objects set is changed to
valid. You can now:
| analyze the report of the computation |
| visualize images for various results |
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| The status and results of all intermediate computations necessary to
compute the solution are reported in HTML format. For more detail see the basic
global Report capability . |
| To display CPU time and memory
requirement estimates prior to launching any computations, activate the
Estimates switch in the Update dialog box. |
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Products in
Analysis Workbench
| The ELFINI Structural Analysis product offers the following
additional feature: |
If several Static Analysis Cases have been defined, you can compute
them simultaneously by following the same procedure. You can also compute
only a selection of cases by selecting Analysis Cases Solution Selection.
You can then specify the cases in the Compute dialog box.
The Definition parameters of an Analysis Case,
(available, in the ELFINI Structural Analysis product, in the New
Case dialog box at the time of a Case Insertion) cannot be modified once
the Case has been created. These must not be confused with the Computation
parameters of a Case Solution, which are proposed by default at creation,
and are editable afterwards.
To edit the default values of the Computation parameters of a
Case Solution, double-click the Solution objects set in the analysis
features tree (or right-click, then
click .Object -> Definition ) to display the Definition
Parameters dialog box.
The Definition parameters dialog box contains the following
parameters:
| method
 | auto |
| gauss |
| gradient
 | maximum iterations number |
| accuracy |
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| gauss R6 |
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which can all be modified in the dialog box.
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The ELFINI Structural Analysis product offers the
following additional features with a right mouse click (key 3) on a Static
Case Solution objects set:
| Generate Image: proposes to generate the various images
available along with the Static Solution objects set. The image
can be edited to include part or all of the options available. |
| Report: the global status and results of all computations are
reported in HTML format. |
Right-click the Load object in the specification tree and click the Generate Image icon
option from the contextual menu
(on the condition you previously computed a solution using the Compute icon ).
The Image Choice dialog box is displayed. You can select images by
clicking them in the list.
The resulting images sequence is obtained by superposition.
Click the Basic Analysis Report icon
(on the condition you previously computed a solution using the Compute icon ).
The .html partial report file is displayed. It contains a summary of
the modal computation results, including the values of the rigid body
modal participation factors for the computed modes.
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