Spot Welds

Create spot welds in SimSolid.

Purpose

SimSolid performs meshless structual analysis that works on full featured parts and assemblies, is tolerant of geometric imperfections, and runs in seconds to minutes. In this tutorial, you will do the following:
  • Create spot welds using a CSV file or spots on lines.
  • Create standalone spots.
  • Show, edit, hide, and delete spots.
  • Solve an analysis with spot welds and review spot weld forces.

Model Description

The following model files are needed for this tutorial:
  • 3_plates.x_b
  • Spots.csv
  • Spots.ssp

Import Geometry

Import model geometry into SimSolid.

  1. Open a new SimSolid session.
  2. Click the (Import from file) icon.


    Figure 1.
  3. In the Open geometry files dialog, choose 3_plates.x_b.
  4. Click Open.
    The assembly will load in the modeling window.

Import Welds from CSV

Import spot weld locations from an external .csv file.

  1. In the Connections workbench toolbar, click the (Create spot or laser welds) icon.


    Figure 2.
  2. Verify the Spot weld radio button is selected.
  3. Activate the Import welds from CSV radio button.
  4. Click the Import button and browse to Spots.csv file.
  5. Click Open.
    Figure 3 shows how the file looks:


    Figure 3.
    Tip: If more than 2 parts need to be connected, enter alpha numeric value in the "connected part 3" column.
    The imported welds are listed in the dialog. Welds will fail if the spot's XYZ values lie outside of the tolerance-spot diameter. Failed welds will appear in red.


    Figure 4.
  6. Select the failed weld and click Delete.
  7. Click Save CSV.
  8. Optional: Use the and (Zoom in/out) buttons to review welds.
  9. For Spot diameter, enter 10.000.
  10. Click OK.


    Figure 5.

Create Spot Welds on Line

Create a series of spot welds along a line or polyline.

  1. In the Connections workbench toolbar, click the (Create spot or laser welds) icon.


    Figure 6.
  2. Verify the Spot weld radio button is selected.
  3. Activate the Spots on line radio button.
  4. In the modeling window, pick 2 points to draw a line.
  5. Use the up/down arrows to define the Number of spots.


    Figure 7.
  6. Increase the spot diameter to 5.000.
  7. Click OK.

Create Standalone Spot Weld

Create standalone spot welds at selected points.

  1. In the Connections workbench toolbar, click the (Create spot or laser welds) icon.


    Figure 8.
  2. Verify the Spot weld radio button is selected.
  3. Activate the Stand alone spots radio button.
  4. Click on the parts shown in Figure 9 to create spots at desired locations.


    Figure 9.
  5. Change the spot diameter to 5.000.
  6. Click OK.

Edit Spot Welds

Change the diameter of existing spots.

  1. In the Project Tree, right-click on Spot weld 1 and select Edit connection from the context menu.


    Figure 10.
  2. Change the diameter to 5.000
    Figure 11.
  3. You can edit multiple spot welds by selecting them in the Project Tree.

Open Project

Open the SimSolid project file.

  1. Start a new SimSolid session.
  2. Click the (Open Project) icon.


    Figure 12.
  3. In the Open project file dialog, choose Spots.ssp
  4. Click OK.

Review Spot Weld Forces

Solve Structural 1 subcase and review spot weld forces.

  1. In the Project Tree, select Structural 1.
  2. Click (Solve).
  3. Review the model and the spot welds created.


    Figure 13.
  4. Review spot weld forces.
    1. On the Analysis Workbench toolbar, select (Spot weld forces).


      Figure 14.
      Spot weld reaction forces are listed in the dialogue.


      Figure 15.
    2. Select each spot weld in the dialogue to view its corresponding forces and moments.
      Force and moment resultants are drawn graphically for the selected spot weld.
  5. Click Save CSV to save the reaction forces to a csv file.