... optimized using lumped mass-inertia-based AxSTREAM RotorDynamics module followed by the bearing selection analysis using SKF SimPro expert to ensure enough separation margin from the nearby critical speeds. Equivalent 2D geometry has been used with an FEA-based ANSYS general axisymmetric model to reduce...

... of freedom rotor critical speed. It is vital to ensure that the rotor critical t0 Time speeds are not close to the engine operating speed. However, it t1 Starting time is not always possible to isolate all the frequencies above the T Final time operating speed. So, during the engine start to full speed...