Bearing
Bearings are a special case of elastic joints. They implement a coupling between the source and target interface with linear elasticity and viscous damping properties.
Definition
Source and target interfaces should be chosen as shown in following figure:
Source interface
| Type |
Stationary interface (6dof) |
| Topologies |
Inner ring surface at the shaft |
| Location |
Center of action |
| u direction |
Axial, along the rotational axis |
| v direction |
Radial |
| w direction |
Radial |
Target interface
| Type |
Stationary interface (6dof) |
| Topologies |
Outer ring surface at the housing |
| Location |
Center of action |
| u direction |
Axial, along the rotational axis |
| v direction |
Radial |
| w direction |
Radial |
Recommended link settings
| Use ground for source |
unchecked |
| Location master |
either source or target |
| Orientation master |
either source or target |
Parameters
Stiffness
| Parameter |
Unit |
Description |
|---|
| Axial (u) |
N/m |
Axial stiffness |
| Radial (v) |
N/m |
Transversal stiffness |
| Radial (w) |
N/m |
Normal stiffness |
| Rotational (ru) |
Nm/rad |
Rotational stiffness (usually zero for bearings) |
| Tilt (rv) |
Nm/rad |
Tilting stiffness |
| Tilt (rw) |
Nm/rad |
Tilting stiffness |
Damping
| Parameter |
Unit |
Description |
|---|
| Axial (u) |
Ns/m |
Axial damping |
| Radial (v) |
Ns/m |
Transversal damping |
| Radial (w) |
Ns/m |
Normal damping |
| Rotational (ru) |
Nsm/rad |
Rotational damping |
| Tilt (rv) |
Nsm/rad |
Tilting damping |
| Tilt (rw) |
Nsm/rad |
Tilting damping |
