Rotordynamic Analysis (RDA)
At Epsilon, we have decades of experience providing rotordynamic analyses, from single components on a shaft spanning two bearings, to full complexity of multi-shaft turbine engine rotating groups. Don’t wait until testing phase to discover resonance and instability in your rotating components! We can help you cost-effectively select a balance grade, size your bearings, and shafts to avoid costly failures from unforeseen rotordynamic mode failures. Our ANSYS rotordynamic tools surpass those of 1D programs like Dyrobes and XLRotor, by including full 2D and 3D capability when warranted.
If you have a project requiring rotordynamic evaluation or think that it might, contact us and see if our partnership will be the right fit.


Industries served:
- Aerospace: turbomachinery, rotors, turbines & propellers
- Biomedical: bone & dental drills, suction & pump impellers, centrifuges
- Electronics: cooling fans, spinning disks, generators & motors
- Industrial & Manufacturing: HVAC, crushing & pressing drums, generators
- Automotive: drive shafts, axles & CVs, crank & cam shafts, hub bearings
- Agricultural: rotating implements, thresher drums, ventilation fans
Areas of expertise include:
- 1D, 2D and 3D Rotordynamic Analysis
- Complex geometry support for overhung masses, coaxial rotating groups, etc. beyond typical 1D software capabilities
- Modal analysis with Campbell diagram and orbit plot generation to identify critical speeds
- Harmonic analysis for runout and imbalances, predicting deflections and bearing fatigue life
- Bearing selection, stiffness performance and optimization
