Update Link Geometries

When using the soft soil road contact method, if the track link geometry features different dimensions from the ones specified in the track properties, it is required to use the update link geometry option.
Figure 1. Update Link Geometry dialog


The default option is set to Auto Calculate, this option considers the parameters specified in the track properties section. In case of different track link geometry, the User Input option allows modify the dimension of the track link.
Figure 2. User input option in Update Link Geometry dialog


The contact points define how many points will represent that track link. The maximum points allowed in the model is five. The X and Z coordinate of the contact points must be referenced by the track pin center (red coordinate system). The Xcg and Zcg are the longitudinal and vertical referential distances of link CG location from pin center. The figure below illustrates the track links with 2, 3, 4, and 5 points.
Figure 3. Contact points available in Update Link Geometry


The figure below shows an example of a CAD track link using 2 contact points and the equivalent parameters in the Update Link Geometry dialog.
Figure 4. Example of 2-point contact track link


Note: The coordinate system X and Z (0,0) located in the track pin center, shown in the picture above, indicates the contact points must be referred to the track pin center in the Update Link Geometry dialog. This information should not be misunderstood with the track link center location specified in the CAD file as indicated in Create Tracks.