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 |
Viscous 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 |
Hysteretic damping¶
Parameter |
Unit |
Description |
|---|---|---|
Axial (u) |
None |
Axial damping |
Radial (v) |
None |
Transversal damping |
Radial (w) |
None |
Normal damping |
Rotational (ru) |
None |
Rotational damping |
Tilt (rv) |
None |
Tilting damping |
Tilt (rw) |
None |
Tilting damping |