u2.06.32 Instructions for implementing rotor calculations

Summary:

This document is an aid to the user for carrying out studies of rotating machines in*Code_Aster*. It must allow it to carry out a calculation of rotating machines (static, modal, harmonic and transient analyses).

The list of available test cases of rotating machines in*Code_Aster* is appended.

• 1. Equation
  • 1.1. Equations of motion
• 2. Numerical modeling of rotating machines
  • 2.1. Modeling rotating parts
  • 2.2. Modeling of support bearings
  • 2.3. Group table modeling
• 3. Data analysis of « rotating machines » studies
  • 3.1. Assigning models
  • 3.2. Assignment of elementary characteristics
  • 3.3. Boundary conditions
  • 3.4. Calculation of elementary matrices and assembly
• 4. « Rotating machine » calculations
  • 4.1. Static analysis
  • 4.2. Modal calculation
  • 4.3. Transient analysis
  • 4.4. Harmonic analysis
  • 4.5. Cracked rotor calculation
  • 4.6. Implementation of the accidental calculation method
• 5. Post-treatments for « rotating machine » studies
  • 5.1. Modal sensitivities to unbalance
  • 5.2. Participation coefficients
  • 5.3. Determination of phases and amplitudes in harmonics
  • 5.4. Determination of rotor ellipses
  • 5.5. Campbell diagram
• 6. Bibliographical references
• 7. Appendices
  • 7.1. Table of rotating machine test cases in Code_Aster