A new default node, Rotating Frame, has been added to the Solid Rotor and Solid Rotor, Fixed Frame interfaces. The new node simplifies the workflow and improves the performance when performing rotordynamics simulations.

In previous versions, the rotational velocity and inclusion/exclusion of spin-softening effects were defined either in the physics interface settings or in the Change Rotor Speed node. In previous versions, the rotor axis was defined in the Rotor Axis node, along with its associated subnodes. With the new Rotating Frame default node, all rotational properties are defined in one dedicated node.

The Solid Rotor and Solid Rotor, Fixed Frame interfaces now define a local coordinate system. In previous versions, the local x direction was used as the axis of rotation. In version 6.4, the local z direction is used instead for consistency.

Serendipity shape functions are now available in the Solid Rotor and Solid Rotor, Fixed Frame interfaces. The following options are now available: Quadratic serendipity, Cubic serendipity, and Quartic serendipity, in addition to the previously available Lagrange shape functions.

The default discretization used for the displacement field in the Solid Rotor and Solid Rotor, Fixed Frame interfaces has been changed to Quadratic serendipity.

The Change Rotor Speed feature has been deprecated in the Solid Rotor and Solid Rotor, Fixed Frame interfaces. The rotational velocity is now defined in the Rotating Frame feature.

The Rotor Axis node has been deprecated. The same functionality is available in the new Rotating Frame node.

The First Support and Second Support features, subfeatures to the Rotor Axis feature, have been deprecated. The same functionality is available using the Rotating Frame feature with the Axis of rotation selected as From point selection.

The Axis subnode under the deprecated Rotor Axis node has been deprecated. The functionality is now available in the new Rotating Frame node when Axis of rotation is selected as From edge selection.

The Whirl result template has been updated. Unique Whirl result templates are now available for each Rotating Frame node in the model. This make it easier to analyze the results if multiple rotors are modeled simultaneously.

The result templates for Campbell Diagram and Stability Diagram have been updated. The creation time has been reduced.

You can now use mode following when performing parametric eigenfrequency studies. The new functionality can be used to track eigenmodes as functions of a parameter. This is particularly useful when creating Campbell and stability diagrams.