Selecting an Input File and Preparing the Component

To locate the parameters to be used in your Isight model, you need to select an LS-DYNA input file and prepare the component using the LS-DYNA Prepare Wizard.

  1. Double-click the LS-DYNA component icon .

    The LS-DYNA Component Editor appears.

  2. From the Prepare tab, click Browse.

  3. Navigate to the LS-DYNA (.key) file, and click Open.

  4. Click Ignore Non-Existent Included Files if the included files do not exist at the location specified in the LS-DYNA input file.

  5. Click Read Key File

    The LS-DYNA Prepare Wizard appears.

  6. Set the options on the File Selection dialog screen.

    The path and name of the LS-DYNA input file appear in the Master File field.

    1. Specify the Work Directory.

      The prepared files are saved at the path in the Work Directory field. The default path is <Input File Directory>\iSIGHT. For example, D:\LS-DYNA\Isight, where D:\LS-DYNA is the directory where the input file is present and Isight is the name of the subdirectory that the component creates to save the prepared files.

      You can enter a different path by clicking Browse....

    2. In the Subfolder for INCLU Files field, enter the name of the folder to be created inside the Work Directory, where the included files will get saved.

      The default folder name is INCLUDE; hence, the path where the include files are saved will be <Input File Directory>\Isight\INCLUDE. For example, D:\LS-DYNA\Isight\INCLUDE.

      You can enter a different name in this field, and the component creates a folder with this name.

    3. From the Main Mesh Data area, select the file that you want to divide.

      The size of the input file containing the FEM mesh data is usually large. It is recommended that you divide this file into two files (main and mesh) to improve the performance of the component.

  7. Click Next.

    The File Dividing Introduction dialog screen appears, which shows how the files selected from the Main Mesh Data area of the File Selection dialog screen will be divided.

    The File Dividing Introduction dialog screen does not appear if you do not select any file from the Main Mesh Data area.

  8. Click Next.

    The component divides the selected files into two files (main and mesh). One file saves the FEM mesh data, and the other file saves the boundary condition data.

    The No Change dialog screen appears, which displays the files that were created after splitting the selected files.

  9. From the No Change dialog screen, select the files that you do not want to modify. You cannot select the master file.

    The paths of the selected files (as per the input file) are displayed in the File Path column.

    The files containing the mesh data are selected by default; it is recommended that you do not create file parameters for these files because Isight does not support mesh data parameters.

  10. If desired, edit the path of the selected files. Then copy the file to the new location.

  11. Click Next.

    The Customization Edit Option dialog screen appears.

  12. Select the accessories that you want the component to parse.

    You can select BARRIER and AIRBAG.

    1. Click the check box to select the accessory.
    2. Select the corresponding file from the list adjacent to the check box.

  13. Click Finish.

    The component editor is populated with the created files and the parameters. File List, Shell Thickness, Material Property, and Define Curve subtabs appear on the Prepare tab.

  14. In the File List subtab, view and confirm which files will be parsed and updated and which files will not be updated by the component.

    The files for which the corresponding option in the Parsing column is selected will be parsed and updated by the component, and the files for which the corresponding option in the No Change column is selected will not be updated by the component.

  15. Select the Shell Thickness parameters.

    New parameters are named using the following sequence:

    1. The letter "N" followed by a sequence number is appended as a prefix to the original ID.

      For example, two new parameters created from ID 12345 result in N112345 and N212345.

    2. If the appendage causes the ID length to exceed 8 characters, then the letter "x" is included to indicate that some characters are omitted to shorten the length (e.g., 12345678 - N112345678 - N1x45678.

    1. Click the Shell Thickness tab.

      The Shell Thickness parameters appear. The Section_ID and PART_ID of each parameter are displayed.

    2. Filter the displayed parameters.

      Select Section_ID or PART_ID from the list, enter the desired parameter ID in the text field, and click Find. The selected parameters are highlighted.

    3. Click Sorting By Checked to re-sort the parameter order in the parameter table.

      The selected parameters appear at the top.

    4. Select the parameters.

      • Click the check box to select the individual parameter.
      • Click Check to select all the parameters.
      • Click Uncheck to clear all the selected parameters.

      If there is more than one PART_ID for a Section_ID, these Part IDs appear as parameter groups. Double-click the parameter groups to expand them. The check boxes for these parameters appear in the New Parameter column. You can select the full group or any number of parameters in the group.

  16. Select the Material Property parameters.

    1. Click the Material Property tab.

      The parameters in the Material Property parameters appear. The MAT_ID and PART_ID of each parameter are displayed.

    2. Filter the displayed parameters.

      Select MAT_ID or PART_ID from the list, enter the desired parameter ID in the text field, and click Find. The selected parameters are highlighted.

    3. Click Sorting By Checked to re-sort the parameter order in the parameter table. The selected parameters appear at the top.
    4. Select the parameters.

      • Click the check box to select the individual parameter.
      • Click Check to select all the parameters.
      • Click Uncheck to clear all the selected parameters.

      If there is more than one PART_ID for a MAT_ID, these PART IDs appear as parameter groups. Double-click the parameter groups to expand them. The check boxes for these parameters appear in the New Parameter column. You can select the full group or any number of parameters in the group.

  17. Select the Curve parameters.

    1. Click the Define Curve tab.

      The parameters for *MAT, *Load, and *Boundary are displayed.

      The *MAT parameters are displayed in the table at the top. The Curve_ID and MAT_ID of these parameters are displayed.

      If there is more than one MAT_ID for a CURVE_ID, these MAT IDs appear as parameter groups. Double-click the parameter groups to expand them. The check boxes for these parameters appear in the New Parameter column. You can select the full group or any number of parameters in the group.

      The *Load and *Boundary parameters are displayed in the table at the bottom.

    2. Filter the displayed parameters.

      Select MAT_ID or CURVE_ID from the list, enter the desired parameter ID in the text field, and click Find. The selected parameters become highlighted.

    3. Click Sorting By Checked to re-sort the parameter order in the parameter table. The selected parameters appear at the top.
    4. Select the parameters.

      • Click the check box to select the individual parameter.
      • Click Check to select all the parameters.
      • Click Uncheck to clear all the selected parameters.

  18. Click Preparation Finished.

    The Select an Option dialog box appears. Click Yes if you want the setting information saved.

    The File List subtab of the Input tab appears, which displays information about which files will be parsed, which files will not be updated, and whether the file paths and names were updated.

    The Input tab has the following subtabs:

    • File List
    • Parameters
    • Analysis Control
    • Velocity
    • Shell Thickness
    • Material Property
    • Define Curve
    • Airbag (This tab is enabled only if the AIRBAG accessory is selected in the LS-DYNA Prepare Wizard.)
    • Barrier (This tab is enabled only if the BARRIER accessory is selected in the LS-DYNA Prepare Wizard.)