The bushings tend to reduce the high impulsive contact forces by providing cushion and reducing the relative angle between the chain links. In this bushing force, a continuous force model is used to represent the pin connections. This force model is a non-linear function of the coordinates of the two links.
(a) Single busing (b) Double bushing
Figure 1 Chain bushing
Figure 2 Pin Bushing dialog box
The Pin Bushing is a radial type bushing. For more information, click here.