Create a Spider

Use the RigidSpider macro to create a spider (RBE2 elements) around holes.

You can create a spider with or without a washer and with one or multiple RBE2 elements.

  1. From the Nastran Utility menu, click RigidSpider.
    The Generate Rigid Spider dialog opens.
  2. Select the components where the spider is needed.
    Click ... to access a list of all available components.
  3. Select the Spider Type.
    • Normal
    • Washer
    If you select Washer, an additional field appears on the dialog.
  4. In the Rigid Type field, select Single or Multiple.
    Single indicates that a single RBE2 element will be created between the independent node and all dependent nodes. Multiple indicates that multiple RBE2 elements will be created between the independent node and each dependent node.
  5. Click Generate.
    The tool redraws the component chosen in step 2 using plotel elements around the holes and component perimeter.
  6. Pick a plotel element around the hole where the spider is needed.
  7. Click proceed.