2. Reference solution#

2.1. Calculation method#

The reference solution is that provided by code ROTORINSA, a finite element code (such as a Timoshenko beam) intended to predict the dynamic behavior of rotors under bending.

2.2. Reference quantities and results#

These are harmonic force response calculations with four different rotor rotation speeds: 0, 40000, 50000, and 60000 \(\mathit{tr}\mathrm{/}\mathit{min}\).

The harmonic force excitation frequency is \(1\mathit{Hz}\), \(25\mathit{Hz}\), and \(250\mathit{Hz}\) successively.

At each speed of rotation of the rotor, two calculations are carried out:

  • unit harmonic effort following \(X\) applied to disk node \(\mathit{D2}\)

  • unit harmonic effort following \(Z\) applied to disk node \(\mathit{D2}\)

Each time, the values of the amplitude and phase maximas are recorded at the node of disk \(\mathit{D2}\).

2.3. Bibliographical references#

  1. ROTORINSA, finite element software designed to predict the dynamic behavior of rotors under bending, La MCoS UMR5259, INSA -Lyon.