7. RotorDynamics and Active Detection of Faults in Rotating Bodies

SDT Rotor1 D beam/mass (critical speed, Campbell,forced response)3 D models– Cyclic symmetry (mono and multi-stage)– Sector super-element (mono and multi-stage),mistuning, rogue blade, sector model, full andpartial restitution, test/analysis correlation, …– Campbell diagram (body fixed model)– Inertial, thermal and pressure loads,temperature dependent materialsTime domain (rotor/stator interaction)– Shaft superelement in body fixed framee y NL– Non-linear bearing models (currently only NLstiffness and damping)simulation resultreally hard to understandCurrently beta, stable release 2009Images A. Sternchuss, funded by SNECMALocalization due to mistuning, full shaft mode/diameter analysis,Campbell diagram for mistuned disk, time simulation of an engine withgyroscopic effects (funded PSA)