Development of software versions Dynamics R4, Alfa-Tranzit Co.

ROTOR DYNAMICS SOFTWARE

Dynamics R4		See also Damper R3.1 here

Development of software versions

Changes in Dynamics R4.7

Appended new nonlinear [Radial-angular ball bearing] (2-point contact, 5 degree of freedom)
Consideration of the temperature state for ball bearings was added
Consideration of the clearance changes due to mounting fits for ball bearings was added
Data post processing algorithm (Bearing Info) for ball bearing state analyzing was added
Appended new nonlinear element [Dry Bush]
Stiffness and damping output was added for several nonlinear elements (ball bearing, Roll bearing, Damper, Plain Journal Bearing)
Buttons for charts exporting into clipboard were added.
Settings for charts in Unbalance Response and Transient Response are memorized while sections selection changing
Buttons for charts settings save and restore between program launches was added.
Buttons for chart image copy to the last active open Microsoft Word instance was added (installed Active Python 2.7 is needed)
Matrix Calculator was added to Service menu
Buttons for charts legend control were added.
Other minor bugs with interface were fixed
New materials were added in Help system

Changes in Dynamics R4.6.7

Check of influence of model change on basis by a user was added. Program rarer recalculates basis automatically
The button of the [Natural frequencies] algorithm calculation was added for time parameter determined according to the cursor position on the Natural frequency map
Calculation of post processing algorithm “Peak-to-peak” for systems with weight was corrected. Results output was improper when all the signal points were in negative areas
Computation of basis for multiple-elements models was added. Console solver version for x64 operating system was added
Warning before animation or 3D-plot was added for [Transient response]
Static displacement exclusion was added at calculation of post processing “root-mean-square value”
Output of parameters of one section of rotor system model according to parameters of the other section in the algorithm [Transient response] is added
Some mistakes in interface were corrected
New materials were added in Help

Changes in Dynamics R4.6.5

Visualization of the [Disk], [Mass], [Generalized element] elements was improved – extended features for visualization and possibility to load 3D model from external file were added (VRML format). Parameters influence only the model visualization
Precision in protocol of calculated moments of inertia for beams and shells was changed to 1e-6 kg*m2
The parameter – data output scaling factor was added to the Mean Value algorithm. It is suitable for use in calculation of transient regimes for the linear system, in Peak-to-Peak regime (factor=0.5) for comparison with unbalanced behavior
Visualization in 2D model editing was improved. At selection in the model tree its subsystems are highlighted in blue color. At selection of the link the subsystems that added to it are highlighted
Positions deletion in the dialog of materials database editing was improved. It became possible to delete several notes at the same time not only using “Delete”-key, but also pressing [Delete] button in the dialog
The function of assemblies’ expansion was modified. Now expansion is stepped, it depends on the level of assemblies nesting into models
The button of output of active assembly contents in 2D and 3D regimes was added
The button of calling the dialog of the root object choice to display the model in 2D and 3D regimes was added. It works as a filter in the “Spaced subsystems”, “Expand assemblies”, “Select structure to view” regimes
Buttons behavior in the dialog of materials database editing was changed. The [Load…] button now leads to materials database replacement by information from the external file. The [Add…] button adds notes to those existing in database from external file
The storing place of the materials database was changed to the user’s folder. Before it was necessary to give additional rights on recording into installation folder
The parameter [cs] description was corrected. Autoseparation is applied not only to cylindrical, but also to conic beams
Description of the [Shell] and [Shell with flange] elements were corrected. In calculations the given diameters are used as the middle ones, not outer ones
At drawing of point masses, rotating speeds, couplings the additional contours suiting the given in characteristics colour are drawn to ease determination of the point
Some mistakes in interface were corrected
New materials were added into Help

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