The following calculation models are available for the roller-rib contact in a rolling bearing:
- Point contact according to FVA 998: The roller-rib contact is modeled as a Hertzian point contact. The relevant geometry variables (edge radius of the roller, rib opening angle, etc.) are estimated internally.
- Simplified according to FVA 364 II: The user can determine the position of the rib contact on the rolling element via a lever arm. For cylindrical rollers, an additional tilting angle for the rolling element is estimated from the axial displacement; the contact force is finally determined from the equilibrium conditions for the rolling element. A simplified contact model is used for tapered rollers.