Define bearing supports between coincident nodes with CBEAR elements

Three coincident nodes are required for you to define a bearing support.

• The first coincident node is associated with the mesh of the rotor. When you define the rotor, include this node in the Rotor Objects (ROTORG) selection.

• The second coincident node is associated with the bearing element. When you define the stationary nodes, include this node in the Bearing End Objects (ROTORB) selection.

• The third coincident node is associated with the mesh of the supporting structure. Do not include this node in the Rotor Objects (ROTORG) selection or the Bearing End Objects (ROTORB) selection.

The bearing support consists of an RBE2 element defined between the first and second coincident nodes, and a CBEAR element defined between the second and third coincident nodes.

1. Choose Home tab→Connections group→1D Connection .

2. In the 1D Connection dialog box, in the Connection Element group, select RBE2 from the list.

3. In the Type group, select Node to Node from the list.

4. In the Source group, click Node and in the graphics window, select the first coincident node as the source node.

5. In the Target group, click Node and in the graphics window, select the second coincident node as the target node.

6. Click Apply.

7. In the 1D Connection dialog box, in the Connection Element group, select CBEAR from the list.

8. In the Type group, select Node to Node from the list.

9. In the Source group, click Node and in the graphics window, select the second coincident node as the source node.

10. In the Target group, click Node and in the graphics window, select the third coincident node as the target node.

11. Click OK.

How do I

Create a rotor dynamic solution

Assign physical properties to CBEAR elements

Define rotors

Define the superelement reduction for a rotor

Map CBEAR elements to rotors

Define stationary nodes for CBEAR elements

Define system-wide rotor dynamics solution options

Define rotor-specific rotor dynamics solution options

Specify mode filtering

Model centrifugal stiffening and softening in rotor dynamic analysis

Model mass imbalance in rotor dynamic analysis

Create a Campbell diagram

Learn more

Rotor dynamics

Rotor dynamics workflow

Supported solution types for rotor dynamic analysis

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Define bearing supports between coincident nodes with CBEAR elements, Simcenter 3D 2021.1 Series

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