Applying Fixed Displacement Restraints to Axisymmetric Models

You can apply a fixed displacement restraint, a generalized boundary condition, to restrict specific degrees of freedom for portions of your axisymmetric model.

See Also
About Fixed Displacement Restraints
In Other Guides
Support Selection
  1. From the Restraints section of the action bar, click Fixed Displacement .
  2. Optional: Enter a descriptive Name.
  3. Select the geometry supports in the model.

    You can apply a fixed displacement to one or more points, edges, or faces. You can also select a coupling connection, rigid body, or rigid surface; the restraint is applied to the reference point for the feature.

  4. Select one of the following as the Axis system definition:
    OptionDescription
    Global Aligns the local feature triad with the global coordinate system.
    Local Aligns the local feature triad with a selected axis system in the model. If you select this axis system, you must also specify whether the axis system is Cartesian or Cylindrical.
    Specify Orients the local feature triad directly. Right-click the feature triad glyph on the model, and select an orientation tool.
    Implicit Aligns the axis system to the transformed axis system applied on the support.
  5. Select the restricted degrees of freedom.

    The degrees of freedom are oriented in terms of the local feature triad for the fixed displacement. R is aligned with the local x-axis, and Z is aligned with the local z-axis (the axis of symmetry). Rotation, Theta, follows the same rotation used to define the axisymmetric geometry.

  6. Click OK.