Easy, reliable and effective software for shafting systems

Control of vibration levels in propulsion systems and generator sets is essential in order to have machinery that operates safety and reliably. The wrong combination of individually satisfactory components may lead to an inappropriate system. Identifying the interaction between components is an essential part of the system and functionality assessment.

Working in a user friendly Windows based modelling interface the user will build up a lump mass system of inertia elements (masses) connected by elastic elements (shafts or couplings). Tailor made user dialogs are available for calculation of complex parameters such as the cylinder pressures, propeller damping or entrained water. The application will build up the necessary linear differential equation system which is passed to the equation solver for further processing.

Free vibration calculations will identify the different vibration modes in the system, showing which components contribute least and most significantly to the vibration mode in question. Each mode is characterised by its torsional natural frequency and deflection curve.
Forced steady-state vibration calculations will identify the steady state response amplitudes of stress, torque and dissipated power in different elements at various torque-load conditions due to external excitation

This new tool covers steady state torsional vibrations and focus on propulsion plants for marine application. Thus, it will be possible to analyse a wide range of common propulsion plant types such as:

• Conventional diesel driven plants (gear or direct coupled), single or multi-branched
• Gas turbine plants
• Water jet plants
• Diesel electric plants
• Generator sets

Benefits

• State of the art graphical user interface with flexible modelling options
• Enhanced mathematical algorithms based on well proven technologies
• Advanced report- and print features and integration with MS Office applications
• Integrated component libraries for engines and couplings
• Upload- and download excitation data files for diesel engines (engine harmonics)
• Exchange of models, results and reports supported by Web Services
• No pre- or post processing, all operations are carried out in one interface
• No practical limitation with respect to number of masses or shafts
• State of the art software architecture by use of C#/.NET and Fortran/MKL