v2.02.129 SDLL129 - Beam with 3 disks and 2 bearings with variable characteristics depending on the speed of rotation

Summary:

This test makes it possible to validate the calculation of the rotation modes of a rotating shaft system with the command CALC_MODE_ROTATION in the case where the stiffness and damping characteristics depend on the speed of rotation.

In this test, we have a rotor model with three disks, supported by two hydrodynamic bearings, whose stiffness and damping matrices are non-symmetric and depend on the speed of rotation. This example and the corresponding reference results are taken from the qualification manual for ROTORINSA, [bib2], a finite element software designed to predict the dynamic behavior of rotors under bending.

A good agreement is observed between the results of*Code_Aster* and the reference solution.

• 1. Reference problem
  • 1.1. Geometry
  • 1.2. Material properties
  • 1.3. Boundary conditions
• 2. Benchmark solution
  • 2.1. Calculation method
  • 2.2. Reference quantities and results
  • 2.3. References
• 3. Modeling A
  • 3.1. Characteristics of modeling
  • 3.2. Characteristics of the mesh
  • 3.3. Tested sizes and results
• 4. Summary of results