Focuses on the vibrational analysis of rotating machinery, including evaluation of critical speeds, Campbell diagrams, whirl orbits, and associated bearing implementation.

•       Carry out the basic end-to-end rotordynamics analysis process in Ansys Mechanical.

•       Understand the underlying technical and analysis features that are unique to rotordynamics.

•       Describe and apply the essential rotordynamics analysis capabilities: computation of critical speeds, prediction of rotor whirl and system stability, computation of unbalance response and consideration of start-up and shut-down transient responses.

Analyzing and predicting the vibration behavior of structures is important in the design and development of mechanical systems.

A rotor refers to a mechanical system in which at least one part rotates with a very high angular momentum. Vibration analysis of rotor systems requires special knowledge because of several unique behaviors of the structure stemming from rotation effect, which is not observed in non-rotating structures.

These concepts specific to rotors are the gyroscopic effect, Coriolis effect, spin softening, rotating damping, and mode directivity. The concepts of the gyroscopic effect, Coriolis effect, and spin softening are critical in the rotordynamics field.

Another unique aspect of rotordynamics is the effect of rotating damping.

In non-rotating structures damping is always a stabilizing factor. Damping reduces the magnitude of vibration at resonance and makes the system more stable.

In rotating systems, damping present in the rotating part of the system can act as a destabilizing influence in certain situations.

In non-rotating vibrating systems, the motion of the system oscillates harmonically along a linear path. In rotating systems, vibration is actually a whirling, or circular, motion.

In rotating systems, whether the whirling motion is in the same direction of the rotation (forward motion) or opposite direction of the rotation (backward motion) is important in the analysis of the system

Key FEA activities carried:

·      FEA Simulation of Lateral Critical Speed analysis

·      FEA Simulation of Torsional Critical Speed analysis

·      HCF life calculations for multistage centrifugal pump casing

·      FEA simulation procedure for Combining Non-Rotating Structures

·      Design Optimization using DesignXplorer

Design Validations as per Industrial codes such as

·       ASME

Our FEA expertise combined with our industry-renowned process will mitigate your risk, improve the performance of your product, shorten your lead times and reduce your costs. 

Projects Executed for:

·      Hydro UK

·      Gdyson Pumps