Development of software versions
New features in Dynamics R4.6
- Appended new nonlinear element – Active magnetic bearing
- Support for Core I7 processor family was added
- Up to 20% performance improvement in algorithms for basis calculation
- Appended auto save function
- Zooming by mouse wheel in 2D window was added
- Working regimes border lines of the research object was added on Natural frequencies map
- Program crash while file saving on the disc with FAT32 was fixed
- Fixed: The data post processing algorithms was not working with the nonlinear results loaded from the file
- Fixed: crash while basis calculation with zero range frequencies
- Fixed: crash while deleting subsystem with connection points (if any link is connected to that point)
New features in Dynamics R4.5
- Trunnion coupling element was added
- Orthogonalyty matrix checking with warnings were added
- Crash while drug and drop operation for algorithms was fixed
- Initial damping in Transient response was changed from linear dependence to parabolic dependence
- Help system was actualized with user guide. Topics on crosscoupling effects were added
- Information on simulation command script interface were added. Reference help system on script functions.
- Orthogonality matrix prints with corresponding frequencies in the protocol
- Protocol template loading was fixed
- Appended choosing theme for protocol output
- Phase of unbalances is now taken into account in visualisation
- Waterfall diagram visualisation was improved
- Showing current values was added to 2D graphics. Guidelines were added
- 3D view in transient response shows data now from zero point (without initial time)
- Automatic reload on submodel appending was added
- Saving model description, title, author from [System] properties was added
New features in Dynamics R4.4
- Additional type [unbalance] was appended to Dynamic Load element. It’s allows to model nonsynchronous excitation by setting of unbalance load and rotation factor. (for example oil inside compressor drum).
- In addition to button “Separate all subsystems” new function for taking apart different assemblies was appended.
- Additional orthogonalization of multiple same modeshapes was added. The low orthogonality of calculated modeshapes had appeared in some spatial models.
- Width of the expanding box for the list of connection points was extended.
- Visualization of Natural Frequency Map, Stability Map was improved. In old versions there was black colored lines in maps with big amount of subsets.
- Functionality of saving to disk and loading from files was added to Materials Edit Data Base dialog.
- Output of Logarithmic Decrement and Damping Ratio was added to table view of selected modeshape (Natural Frequencies and Critical Speeds algorithms). Such output was added to Frequency Summary table in protocol.
- Progress bar of current calculation state was added to some algorithms(Natural Frequencies Map, Parametric Maps, Unbalance response, Transient response).
- Zero complex component was removed from table view of selected mode shape in Basis algorithm.
- Coping of Variables group and separate variables between assemblies and models was added. Appending Variables group from the elements and algorithms library was added.
- Coping of Materials group and separate materials between models was added.
- Algorithms coping between models were added.
- File name outputting of calculated model was added to log window. Allows to differentiate results in case of working with several models simultaneously.
- List of the one level parameters(simultaneous parameters changing) was added to axis’s labels in Parametric Maps.
- Unicode support was improved. It is possible now to output protocol for models with elements names in letters other than Latin and Cyrillic (for example Asian languages).
- Converting to English units is extended.
- System of model input validation was improved.
- Data output for frequency type was changed from rad/sec to cycles/min in Parametric Maps.
- Locus chart was added. (decrements versus modeshapes frequencies)
- Calculation and interface bugs were fixed
New features of Dynamics R4.3
- New command modeling interface (Python language) was added (appends new possibilities in model parametric and variant calculations, allows to compose import converters)
- Added extended visualization for a models (coloring and transparency features extended, see context menu in model tree and elements propeties)
- Parametric maps was improved (visualization, logarithmic input steps)
- Some bugs with energy calculation was fixed (affects models with near critical damping and links with nonsymmetrical matrixes)
- Speed of calculation was improved
- New examples has appeared in the tutorial
- Help system was extended
New features of Dynamics R4.2
- The model editor functionalities are extended and improved
- The new multi-level model architecture includes assemblies, submodels and subsystems
- The new algorithm to solve eigenvalue problems in terms of global flexibility matrix obtained for multilevel, multilinked and space systems is realized
- The code includes new capabilities for 1-D and 2-D parametric studies by verifying the model parameters, speed, dimensions, location, stiffness, damping, load, etc.
- The Critical Speed Map option is extended and can show relations of model parameters and critical speeds
- An additional stability map shows the logarithmic decrement versus the rotation speed
- The project description has additional parameters
- An additional element describes link points of subsystems and elements
- An additional link is described with non-symmetric stiffness and damping matrixes
- A super-elements prepared in FEM programs are possible to include in dynamic models
- The set of algorithms for multi-shaft systems analysis is amended with gear transmission block for cylindrical, conical or hypoid gears
- The reference system is amended with additional information
- The education examples library is extended
- The Undo/Redo function is added
- Different systems of units may be used, SI, or GB
- The [Roll Bearing Support] and [Ball Bearing Support] elements are modified
New features of Dynamics R4.1
- Parametric analysis using [Variables] mode
- New form of stiffness, flexibility and damping coefficients input (matrix input)
- Saving of transient data. Loading of saved data
- Automatic basis recalculation
- Memory efficiency improved
- [User Variables] in transient response
- Real time Integrator Statistics output
- A general form beam element is added
- A general form stiff link element is added
Dynamics R4.0 is a result of the Dynamics R3.1 improvement
- The improved code structure allows adopting and development matching specific user’s orders
- New algorithm of Natural Frequencies and Modes analysis
- New user interface
- 3-D location of subsystems, co-axial, or misaligned, or crossing
- Analysis of natural or violated coupled bending-torsion-axial vibrations in rotating subsystem
- New elements for simulation of linear multi-shaft rotor systems
- Solution of non-linear system proble
- A wide range of non-linear elements
- New steady and unsteady loads, unbalance, impact, harmonic, periodic, weight, axial load, etc.
- Parametric study on of the model parameters
- Consideration of internal and structure frictions
- Dynamics stability evaluation
- Specific adoptive methods for the non-linear solutions optimize calculation speed and accuracy
- Compatibility with the previous DYNAMICS models
- Creation of a unified material database
- Customizable formats of protocols and reports on input data and calculation results
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ROTOR DYNAMICS OF TURBOMACHINERY
