Mechanism Status and Redundancies

This function provides useful information about the model and the status of joints that are created. Information such as, number of bodies, degree of mobility, and the number of closed kinematic chains. Based on the information provided, you are able to see the cause for the redundant constraints . In most cases, you should be able to edit the joint and resolve the redundancy.

Note: This feature is available only if the Automatically Convert Constraints to Standard Joints is not active. If you use the Automatically Convert Constraints to Standard Joints option, the software automatically repairs any redundancies.

1. On the ribbon, click Dynamic Simulation tab Joint panel Mechanism Status .

   The Mechanism Status and Redundancies dialog box shows the degree of redundancy, the degree of mobility, number of bodies, and number of mobile bodies, for the mechanism in the Model information group.

   Note: You can open the Mechanism Status and Redundancies dialog box with your simulation running. The dialog box displays model information relative to the start of the simulation (time = 0 seconds).
2. If closed kinematic chains exist in the model, More is enabled to expand the dialog box and reveal the Closed kinematic chains group. Where there are more than one group to look though the dialog box enables the Previous and Next commands.

   If the software can suggest a change to remove redundant constraints by altering a joint , the suggestion appears in the Redundant constraints column to the immediate right of the joint and the modified joints appear in the Final joints column.

   Tip: If you would like to see the components of the selected chain highlighted in the graphics window, click Highlight chain's components.
3. If necessary, use the vertical scroll bar to move the joint with a suggestion for change until it appears in the window.

   If the software cannot suggest a change, a warning icon appears at the top of the Redundant constraints column.

   Note: If the software cannot find a solution, that does not mean there is no solution. In the Final joints column, manually modify some of the joints in this chain to remove the over constraints.
4. Repeat steps 2 and 3 for all over constrained kinematic chains.
5. The model updates as modifications are made. To review how the modifications affect motion click Test . The test command enables Dynamic Part Motion.
6. If you do not like the modifications for any reason, you can click Reset model at any time before you click OK.

   The program returns the model to its original state.

7. If the mechanism is no longer over constrained, click OK to save these changes.

Show Me how to repair redundancy in joints