XXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXX''"> 2.12 Rotor Dynamics
The MD Nastran Preference supports steady state and transient rotor dynamics, introduced in MSC.Nastran 2004. This capability allows you to model structures with rotating parts, allowing for gyroscopic effects to be included.
Rotor Dynamics are modelled using Rotor and Unbalance entities, created within the Rotor Dynamics... selection under the Tools menu:
Rotor Dynamics Form
The Rotor Dynamics form is accessed from the Rotor Dynamics... selection under the Tools menu. This form is used to create, modify, delete, or show Rotors, which define spin properties, including the axis of rotation, spin direction, damping factor, and speed.
Spin Profile Form
For Steady State analyses, the Spin Profile form is used to define the relative spin rates.
Spin History Form
For Transient analyses, the Spin History form is used to define the spin rates.
Unbalance Form
The Rotor Dynamics Unbalance form is used to create, modify, delete, or show Unbalances, which define unbalance loads for transient analyses in terms of cylindrical system with the rotor axis as the Z axis.
Unbalance Properties Form
The Unbalance Properties Form is used to define the remaining parameters for the Unbalance.
