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MADYN 2000 for Rotordynamics
MADYN 2000 ® is an extensive rotordynamic program, which is suited for general rotor-gear-bearing systems for lateral, torsional and coupled analyses with all types of bearings (fluid film bearings, rolling element bearings and magnetic bearings).
The program is based on extensive industrial experience since 1983. It covers the needs of a wide range of rotors: From small automotive turbochargers to large shaft trains for power generation with a power of several hundred to thousand MW. The magnetic bearing module in MADYN 2000 ® goes back to a development in 1998, which has been launched to meet the demands of industrial magnetic bearing applications. See History of MADYN 2000 for more details about the past. The MADYN 2000 Flyer gives an overview of the program. Details about the last versions can be found under MADYN 2000 Release Notes.
MADYN 2000 ® focuses on the special requirements of rotordynamics. Unique distinguishing features in comparison to other available rotordynamic tools are:
- The coupling between lateral, torsional and axial vibrations as it occurs in gears can be considered.
- Magnetic bearings can be modelled by proven controller building blocks similar to real systems. Parameters of the controllers can be optimized with respect to damping, bearing forces and robustness. For the analysis of the stability the complete system consisting of the rotor and the magnetic bearing system is considered (no iterative solution with substitute stiffness and damping coefficients of the bearing).
- The non-synchronous characteristc of tilting pad fluid film bearings can be considered.
- Bearing supports and couplings between the supports can be considered by transfer functions or state space matrices, which may be imported from measurements or from results of 3D FE models of a casing for example.
- Nonlinear fluid film bearings and rolling element bearings, nonlinear couplings as well as general user defined nonlinearities can be considered in transient analyses.
- The stability against hot spots can be calculated, among others against hot spots in fluid film bearings (Morton Effect).
- The analysis of rotordynamic coefficients of seals is based on a CFD solver of the Navier Stokes equations, not on bulk flow models with many simplifying assumptions.
MADYN 2000 videos on YouTube
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