A fixed joint is a zero degree-of-freedom constraint. It applies a rigid connection between the connecting bodies, meaning bodies connected by a fixed joint are forced to move together. Fixed joints can be used to simulate connections where relative displacements are idealized to zero, such as bolted connections, welded connections, and bodies that are fixed in motion and orientation with respect to another body.

  1. If the Joints panel is not currently displayed, select the desired joint by clicking on it in the Project Browser or in the modeling window.
    The Joints panel is automatically displayed.
  2. From the Connectivity tab, click Body 1 and pick a body from the modeling window, or double-click Body 1 to open the Model Tree (from which the desired body can be selected).
    Note: If the selected joint is a pair entity, first distinguish between the Left and Right tabs in the panel, and then edit the properties. When defining a pair joint, use pair entities for Body, Origin, etc.
  3. Similarly, click Body 2 and select the desired body from the modeling window (or use the Model Tree).
  4. Click the Point collector (under Origin) and select a point from the modeling window, or double click the Point collector to open the Model Tree (from which the desired point can be selected).
If editing a compliant joint, see Edit Compliant Joints or Bushings. To edit user-defined properties, see Edit User-Defined Joints.