DYNAMICS R4 is a program system used to solve wide range of linear and nonlinear practical problems related to rotordynamics for multi-shaft rotor systems including its bearings, cases and support structures. Main research objects include gas turbine engines, turbopump units, power plants, gearboxes and many others. Program system can be used at various stages of design and development of the research object as well as its refinement, tunning and operation.
DYNAMICS R4 Software System
General Performance
- Linear and non-linear dynamics of rotor systems.
- Library of typical elements for simulation of rotor systems complex configurations.
- High speed of calculations.
- Various methods of numerical integration.
- Various result presentation.
- Possibility to create material database.
- Possibility to build new non-linear elements on the basis of available algorithms and models.
- User-generated type and content of protocols.
- Advanced information system – help function, error messages, warnings.
- More than 60 examples of the S/W application to analysis.
- Multi-language interface.
Software features
- Analysis of multi-shaft rotor systems.
- Unlimited number of rotors and housings.
- Spatial arrangement of subsystems – coaxial, non-coaxial, intersecting subsystems.
- Coupled bending, axial and torsional vibrations of rotors and housings.
- Influence for anisotropic properties in different directions.
- Calculation of geared rotor systems.
- Rotors with different speeds.
- External and internal damping.
- Axial static loads.
- Parametric analysis to investigate influence of system various parameters on its dynamics including load changes.
- Various types of unsteady loads – impact force, blade failure, mono and poly-harmonic excitation, arbitrarily specified loading.
- Simulation of loads caused by aerodynamic forces in axial and centrifugal compressors.
- Calculations of systems with kinematic and seismic excitation.
Linear Analysis of Dynamic Rotor Systems
- Damped natural frequencies of rotating rotors.
- Critical speeds.
- Natural Frequency map. Cambell diagram.
- Critical speed map.
- Kinetic and potential energy distribution for dynamic system mode shapes.
- Stability maps.
- Unbalance synchronous and non-synchronous excitation (response).
- Static displacement caused by weight and applied static loads.
Nonlinear Analysis
- System with clearances – full and partial contact, loss of stability.
- Plain journal bearings of various types.
- Hydrodynamic damper supports.
- Non-linear rolling bearings.
User Interface
- 2D and 3D view of dynamic system model.
- Creating groups of elements for various computational cases.
- Various representations of simulation results – amplitude-frequency response (Bode plot), time domain signals, motion orbits, vibration spectrum, waterfall diagrams, RMS, etc.
- Results Output in 2D and 3D graphs.
- Various output parameters – displacements, phases, speeds, accelerations, forces, moments.
- Adjustable initial data and calculation results reports.