To Define Animation Settings
1. Click 
Animation Settings. The Settings dialog box opens.
Animation Settings. The Settings dialog box opens.2. Select or clear the Issue a warning when the assembly fails to connect check box.
3. Select Run preferences
◦ Click Pause when analysis run fails to stop the animation if assembly fails, and to decide whether to terminate or continue it.
◦ Click Continue when analysis run fails to continue the animation if the assembly fails.
◦ Click or clear the Graphical display during run check box to set run performance (the run is slower when the graphic display is on).
4. To change the Relative tolerance setting, enter a value between 1e–10 and 0.1, or click Restore default to reset it to 0.001.
5. To change the Characteristic length setting, enter a value or click Restore default to reset it. Consider changing this setting when the largest part is much larger than the smallest part.
6. Click OK.