Model Export

Export the loadcases and variability studies.

Model Export allows you to export the prepared session to run analysis in Altair OptiStruct. If a Variability Study is prepared, it can also be exported and processed using HyperStudy.
Before you begin, all previous steps in the process need to be performed. All E-Lines of interest and a dynamic loadcase must exist in the model. Export the required loadcases and variability studies using the Export OptiStruct Solver File option.
  1. From Analyze group, select Export OptiStruct Solver File.
    Figure 1.
    The Model Export table opens.
    Figure 2.
  2. Enter the name for the file to be exported in the File Name field.
  3. Select Preserve or Merge from the Include File(s) drop-down list.
  4. Click Export.
    • Model file(s) (.fem) along with a _preoutput.csv file are exported to the selected folder.
    • If Variability study is selected then, SnRD will also export the following:
      • .tpl file: Parametrized version of the model file.
      • .xml file: Study file containing HyperStudy setup.
  5. Browse and select the required folder.
    Note: During the solver file export, SnRD also exports E-Lines information to a CSV file. This file will be later used in the post-processing of results.
    Tip: If you have not mapped Material or GD&T data to E-Lines in the session, these can be manually updated in the CSV file after export and before Post-processing.
    Restriction: If Include File(s) structure is used and selected to Preserve, then all E-Lines and related information must be located main file. Post-processing is dependent on this.
    This will export the OptiStruct solver deck to the selected folder.

Export Variability Study

If a variability study is created in the session an additional export option is available to allow for export of a variability study session which can be opened in HyperStudy to run a Stochastics or a DOE study.

  1. Enable the Export Variability Study box.
    Figure 3.
  2. For Study Name, enter a name.
  3. Select the Dynamic Event to run in the study.
  4. Define the number of runs in the Number of Runs field.
    Note: The Number of Runs value is automatically assigned by SnRD based on the number of studies and the number of variables. You can edit this value, but not mandatory.
  5. Select analysis type.
  6. Select an option for Combine All.
  7. Click Export.
    This will export the variability study TPL and XML files along with the OptiStruct solver file to the selected folder.
    Note: Use the open the .xml file in HyperStudy to generate a run database and results required for DOE/Stochastics study.

Export Solver File Options

File Name
Solver file export name.
Include File(s)
Select exporting of include files.
Preserve: Preserves the data in individual include files along with their references in the main model.
Merge: The contents from the all include files are imported into the HyperMesh model but their references are not maintained. When exporting, all entities are written into the main file.
Pre Output CSV
CSV file containing the E-Lines definition.
Below is the format
Figure 4.