Bushing

Define directional stiffness and inertia coefficients between two parts

A bushing is a type of vibration isolator that allows only a certain amount of movement. Bushings in SimSolid can be defined between two parts. They are defined using directional stiffness and inertia. SimSolid supports zero, finite, and rigid stiffness.

All bushing properties are defined with respect to a bushing reference coordinate system. X,Y axis of the reference coordinate system are defined using unit vectors.
Note: Since virtual connectors create perfectly rigid boundaries, stresses along the boundary faces can have local concentrations.
  1. In the Project Tree, open the Connections workbench.
  2. In the Connections workbench toolbar, select Virtual connectors > Bushing > Bushing.
  3. Under Apply to, select apply to Face or Spot.
  4. In the modeling window, select the face(s) on the model.
  5. If applying to Spots, create new spots by clicking Create new spot.
  6. Define the coordinate axis of the bushing.
    1. Go to the Coordinate system tab.
    2. The origin is set in COG by default. To edit the coordinates, clear the Set in COG checkbox and specify values for the X, Y, and Z fields.
    3. Select an option for Axis.
    4. Enter values for the X, Y, and Z direction.
  7. Define stiffness.
    1. Go to the Stiffness tab.
    2. Enter values for Linear X, Y, and Z.
    3. Enter values for Angular X, Y, and Z.
  8. Define inertia.
    1. Go to the Inertia tab.
    2. Enter a value for Mass.
    3. Under Inertia moments, specify values for X, Y, and Z.
  9. Define damping.
    1. Go to the Damping tab.
    2. Enter values for Translational and Rotational damping.
  10. Click OK.
    The virtual connector appears in the Connections branch. If selected, vectors representing the connection in the modeling window are displayed.
    Note: Bushing with damping is only supported for complex Eigen value analysis. Running modes automatically run complex modes.