Add a Radial Roller Bearing node and select a point representing the location of the roller bearing.
Use the settings in this section to define the local y direction of the bearing. Subsequent vector and matrix inputs are specified in the local directions specified here.
Enter the Bearing orientation vector defining the local y direction. The direction given will be adjusted so that it is orthogonal to the rotor axis. The default value is the global
y-axis.
You can further modify the y-axis orientation by entering an angle for the
Rotation of the orientation vector around the bearing axis. The direction inferred from the previous setting will be rotated counterclockwise around the rotor axis.
Select a Bearing Type —
Deep groove ball bearing,
Angular contact ball bearing,
Self aligning ball bearing,
Spherical roller bearing,
Cylindrical roller bearing, or
Tapered roller bearing. Then go to the relevant section below to continue defining the properties.
Select either of Single row or
Double row to specify if the bearing consists of single or double rows of rollers. For
Double row bearing, enter the
Axial distance between the roller centers. Enter the geometric properties
Number of balls;
Ball diameter;
Pitch diameter;
Contour radius, inner race; and
Contour radius, outer race to define the bearing geometry.
Select either of Single row or
Double row to specify if the bearing consists of single or double rows of rollers. For
Double row bearing, enter the
Axial distance between the roller centers. Enter the other geometric properties
Number of balls;
Ball diameter;
Pitch diameter;
Contour radius, inner race;
Contour radius, outer race; and
Initial contact angle to define the bearing geometry.
Select either of Single row or
Double row to specify if the bearing consists of single or double rows of rollers. Enter the other geometric properties:
Number of balls;
Ball diameter;
Pitch diameter;
Contour radius, inner race;
Contour radius, outer race; and
Initial contact angle (only for
Double row bearing) to define the bearing geometry.
Select either of Single row or
Double row to specify if the bearing consists of single or double rows of rollers. For
Double row bearing, enter the
Axial distance between the roller centers and
Initial contact angle. Enter the other geometric properties:
Number of rollers;
Roller diameter;
Pitch diameter;
Contour radius, inner race; and
Contour radius, outer race to define the bearing geometry.
Select either of Single row or
Double row to specify if the bearing consists of single or double rows of rollers. For
Double row bearing, enter the
Axial distance between the roller centers. Enter the other geometric properties:
Number of rollers;
Roller diameter;
Effective length of the roller; and
Pitch diameter to define the bearing geometry.
Select either of Single row or
Double row to specify if the bearing consists of single or double rows of rollers. For
Single row bearing, enter the
Axial offset of roller center. For
Double row bearing enter the
Axial distance between the roller centers. Enter the other geometric properties:
Number of rollers,
Roller diameter,
Effective length of the roller,
Pitch diameter,
Cap radius,
Semi cone angle,
Roller axis orientation,
Cap angle, and
Flange contact angle to define the bearing geometry.
Enter the material properties Young’s modulus, inner race and
Poisson’s ratio, inner race to define the elastic properties of the inner race in the bearing. Select
Outer race material —
Same as inner race or
User defined. If
User defined is selected, enter the values of
Young’s modulus, outer race and
Poisson’s ratio, outer race. Finally select
Roller material —
Same as inner race or
User defined. If
User defined is selected, enter the values of the
Young’s modulus, roller/ball and
Poisson’s ratio, roller/ball.
Select one of the Fixed,
Moving,
Flexible, or
Squeeze-film damper foundation options. If the model component also contains other structural physics interfaces such as
Solid Mechanics,
Multibody Dynamics, and
Shell that have
Attachment or
Rigid Domain features, the above list is extended with the list of the attachments and rigid domains available in these physics interfaces. In the
Moving,
Flexible, and
Squeeze-film damper cases, the subnodes
Moving Foundation,
Flexible Foundation, or
Squeeze-Film Damper are automatically added. If any of the attachments or rigid domains is selected, displacement and rotation of the selected feature are used as foundation motion. Attachments and rigid domains provide an easy way of coupling the rotor with the stator.