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Torsional Analysis

RBTS is internationally recognized as an industry leader in providing torsional vibration engineering services. With hundreds of successful projects completed, RBTS has developed unparalleled analytical and diagnostic tools and qualifications in this field of engineering. RBTS provides services to equipment users, packagers, as well as original equipment manufacturers. Our strength is based on our core technical proficiency, continuous improvement to our analytical tools, broad range of experience, and field service support. Typical analyzed equipment includes:

 

Driven Components

Reciprocating Gas Compressors
Centrifugal Compressors and Pumps
Screw Compressors
Generators
Industrial Fans 
Engines (Natural Gas & Diesel)
Induction Motors (Fixed-Speed & VFD)
Synchronous Motors (Fixed-Speed & VFD)
Turbines (Gas & Steam)

Couplings & Other Devices

Flexible Disc Pack Couplings
Diaphragm Couplings
Elastomeric Couplings
Hydroelastic Couplings
Fluid Drive Couplings and Clutches
● Viscous Dampers

Six-throw Compressor for a Process
Application

Our proprietary analytical software allows us to perform the full spectrum of torsional vibration simulations to comply with all API, ISO, and DNV standards. Typical analyses include:

 Natural Frequency and Mode Shapes (Damped and Undamped)
 Steady-State Forced Response (Fixed-Speed & Variable Speed)
 Time-Transient Response
     ○ Synchronous Motor Startup
     ○ Reciprocating Compressor Startup and Emergency Stop
     ○ Electrical Fault Simulation (Short Circuit, Etc.)
     ○ Generic Events (Clutch Engagement, Etc.)
     ○ Nonlinear Behavior (Gear Backlash, Clutch Slip, Etc.)


To learn more about our torsional vibration engineering services, please contact RBTS. Sample applications and a description of the services provided are available in our photo gallery. Visit gallery