OUR LOCATIONS
We can provide our services to power plants worldwide
Bradenton, Florida
941 - 527 - 6196
941 - 755 - 5229 (FAX)
Milwaukee, Wisconsin
414 - 698 - 5644
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ROTORDYNAMICS EXPERTISE IS AT THE ROOT
OF OUR ROOT CAUSE ANALYSIS
Our specialty is rotordynamics, and we have 30+ years of experience focusing on turbine-
generator and bearing rotordynamics analysis.
We perform rotordynamics design verification
and modeling using finite element analysis with Dyrobes software, including:
- Rotor train lateral and torsional resonances and
mode shapes
- Critical speed calculations
- Unbalance responses
- Transient and thermal testing and analysis
- Modal testing and analysis
- Blade resonance impact testing
- Rotor and bearing stability analysis
- Rotor alignment
- Catenary optimization
- Bearing loading calculation and optimization
We can also determine bearing design modifications to ensure stable operation.
Our rotordynamics analysis is the second key step of a complete rotor evaluation (after runout
evaluation) to guarantee a smooth outage and startup. It also directly connects to our unique
balancing method, which is the third key step.
 We utilize data that most others ignore, and apply it to our rotor-train modeling and
rotordynamics behavior analysis. We collect and analyze full vibration data during operation
before shutdown, and during shutdown, if available. We also collect and analyze DC shaft
centerline data, from standstill, to lift oil, at slow roll, to full speed and to full load. This data
helps provide the most complete picture of the rotors’ behavior and can often point to the root
cause of a problem.
By modeling the rotor(s) and analyzing rotordynamic behavior, catching problems with
eccentricities early on through rotor runout data, and applying our 2N+1 balancing method , we
can bring any rotor to smooth running condition.
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