Compatible Seam Mesh

You can find here the recommended methodology to mesh seams using the compatible mode.

  • The two supports must have the same number of nodes.

  • To create an analysis connection, you have to installed the Generative Assembly Structural Analysis (GAS) product .
Open the sample26.CATProduct document from the sample directory.

  1. Select Start > Analysis and Simulation > Advanced Meshing Tools.

    The New Analysis Case dialog box appears.
    Click OK.

  2. Create a line analysis connection.

    1. Click Line Analysis Connection in the Analysis Support toolbar.

    2. Select:

      • Fill.1/Part1 as First Component
      • Fill.1/Part2 as Second Component
      • Line.2/Part3 as Lines

    3. Click OK in the Line Analysis Connection dialog box.

    		For more details about analysis connections, refer to Analysis Connections chapter in the Generative Structural Analysis User's Guide.

  3. Right-click the Analysis Connection.1 object and select Update all analysis connections.

  4. Mesh the first support.
    To do this:

    1. Click Advanced Surface Mesher .

    2. Select the Part2.2 -> Fill.1 feature in the specification tree.

    3. Set the following parameters:

      • Quadrangle as Mesh type option
      • Linear as Element type option
      • 5 mm as Mesh size value
      • 0.5 mm as Constraint sag value.

    4. Click OK in the Global Parameters dialog box.

    5. Click Add/Remove Constraints in the Local Specifications toolbar and select the Curves tab.

    6. Select the Line Analysis Connection.1 object in the specification tree.

      		 The Capture mesh edges option should be deactivated.

    7. Click OK in the Add/Remove Constraints dialog box.

    8. Click Exit to exit the Advanced Surface Mesher workshop.

  5. Mesh the second support.
    To do this:

    1. Click Advanced Surface Mesher .

    2. Select the Part2.1 -> Fill.1 feature in the specification tree.

    3. Set the following parameters:

      • Quadrangle as Mesh type option
      • Linear as Element type option
      • 7 mm as Mesh size value
      • 0.7 mm as Constraint sag value.

    4. Click OK in the Global Parameters dialog box.

    5. Click Add/Remove Constraints in the Local Specifications toolbar and select the Curves tab.

    6. Select the Capture mesh edges check box in the Add/Remove Constraints dialog box.

    7. Select the Line Analysis Connection.1 object in the specification tree.

      The Capture dialog box appears.
      Enter 5mm as Tolerance value.

      		Do not select the Coincidence check box.

    8. Click Apply and then OK in the Capture dialog box.

    9. Click OK in the Add/Remove Constraints dialog box.

    10. Click Exit to exit the Advanced Surface Mesher workshop.

  6. Click Seam Welding Connection Mesh in the Welding Meshing Methods toolbar.

  7. Set the following parameters in the Seam Welding Connection Mesh dialog box:

    • Shell as Connection modeling option
    • Line Analysis Connection.1 as support
    • Compatible as Mesh Compatibility option.

  8. Click Apply and then OK in the Seam Welding Connection Mesh dialog box.