ROTOR DYNAMICS SOFTWARE


Dynamics R4

See also Damper R3.1 here

Development of software versions

Changes in Dynamics R4.10.5

  • Added element [Axial load]. It allows you to simulate the change in frequency for bending vibration modes
  • Added "modal" and "nonlinear" modes selection in [Elastic non-symmetric link] element. In the "nonlinear", the user can receive the output reactions of this type of link
  • Option [misalignment switch] has been added in the "nonlinear" mode of [Elastic non-symmetric link] element. Specify the static displacement of the bearing housing relative to the line of supports centers
  • Added a dialog with calculated data output by the finite element (mass-inertial characteristics and compliance matrix)
  • Added shortcuts for multiplication and division of the current parameter
  • Added. When in edit mode [length] adding of a new element is produced with the parameters of the last section of the previous item
  • Added color selection of active [Gear Set] element
  • Significantly improved sorting algorithm Natural Frequencies Map (Campbell diagram)
  • The elements transparency and color settings were amended. Menu colors transferred to a higher level.
  • Added HowTo section on simulation the effects due to axial load (element [Axial load])
  • Added section HowTo simulation of asynchronous excitation in the algorithm [Unbalance response]
  • Added section HowTo automate input tabular data to create a model using scripts
  • Added new help materials
  • Fixed elements designation of the matrix stiffness, damping and compliance. Replaced by rows and columns. The order of elements in the matrix remains the same
  • Fixed output to a Log values of vibration of the current point on the graph
  • Fixed the reset color settings when converting beams into the shell, or vice versa.
  • Fixed conversion conical shell with a constant inner diameter in the beam
  • Fixed discontinuity of subsystem elements if z2 value is less than z1 in an line element
  • Fixed resizing z2coordinate of the left line element when changing z1 coordinate of right element
  • Fixed transfer [Assembly], [Subsystems], [Links] to another [Assembly]. Active object is copied (corresponding to Copy + Paste). When holding the Shift key delete of the object occurs in the old location (corresponds to Cut + Paste)
  • Fixed window rescale while adding an element to an empty model
  • Fixed crash while multiple switching between mode-shapes in complex models with a large number of sections. Fixed a memory leak when using 3D display of the model when switching mode-shapes.
  • Fixed a crash when calculating with [Dynamic load] element located outside the shaft or housing subsystem

Changes in Dynamics R4.10

  • The new nonlinear element – [Crack] was added
  • The new nonlinear element – [Floating Ring Seal] was added
  • The new element – [ Mass pedestal] was added. Allows to setup mass properties according to DOF
  • Multiple output for XY and XYZ were added to [Unbalance Response] and [Transient Response] algorithms
  • Edit of coordinate in Add section dialog was fixed
  • Synchronization of element designation according it's type was added to functionality of Beam to Shell replacement
  • [Update element names] command was added to shaft context menu
  • Mass and inertia properties output for selected structure element was added to model 2D view
  • Quick jump to referenced section in the link parameters with [via body] connection was fixed.
  • Crash in the end of calculation with clear option in case of previously loaded results was fixed
  • Crash on switching to Simple 3D view in Animation mode was fixed. [Unbalance response] and [Transient response] algorithm
  • Crash of [Parameter analysis]calculation of [Natural frequencies] type without basis recalculation was fixed
  • Crash on [=] button pressing in variable Extended properties dialog in case of empty function table was fixed
  • Crash on context menu command [Global coordinates] for link with connection only to side2 was fixed
  • Crash while repeated [Parameter analysis] calculation with switching in previously calculated results was fixed

Changes in Dynamics R4.9

  • The new element – [ Squirrel cage link] was added. Allows parametric study in order to select its parameters according to required stiffness and strength
  • Forced oscillations mode output in the 2D window was added. Allows filtration on by assemblies and submodels
  • Multiplications output for selected cursor position in the FFT data post processing algorithm was added
  • In FFT spectrums and Waterfalls algorithms choosing of window function was added
  • Output for energy by links, shafts vs frequency was added to protocol functionality
  • Output for accepted frequencies region according API610 was added to Locus diagram
  • Functionality for variables overlay on the parametric maps was added
  • In the [Import bearing from table] dialog functionality of stiffness and damping import from text files was added
  • Additional visualization was added for [DynamicLoad] element. In the [General], [Impulse], [Step] modes load is shown as an arrow in accordance with input values. In [Unbalance] mode load is shown as unbalance load.
  • Output of AF and SM in accordance with API684 in [Unbalance response] algorithm was added
  • Labels output for max values was added in [Unbalance response] algorithm
  • Reactions are shown now with selecting of [Internal] sections in the [Link] elements with force output parameter
  • Auto addition of the [+] or [-] to the group designation in dependence of switch state was added
  • Series style was fixed in [Unbalance response] and [Transient response] charts while multisection selection
  • Materials from database parameters validation was added
  • Program crash while editing of newly added [Seismic excitation] element was fixed
  • Crash after inserting into the table for new links in [Import bearing from table] dialog was fixed

Changes in Dynamics R4.8.8

  • Autodivision of cylindrical shells at assigning point elements and [cs] was added
  • Command to launch validation of the model initial data is appended into the context menu of the model tree
  • Possibility to obtain the interpolated values of the function and the argument was added into the dialog of the variable editing
  • Transition to linked objects by double click on the parameter name (1st column, transition to variables, links points, subsystems, etc.) was added
  • Dialog with simultaneous output of stiffness and damping matrix by double click on the parameter name ([stiff_matrix] or [damp_matrix]) or in the context element menu was appended
  • Function to insert additional section into the elements with length by double click is added.
  • The option in [Assembly] with setting of visibility scope of links connection list was added (local - on default, typical behavior, parent – links points are visible at a level higher, global – all links points are visible)
  • Commands to convert beams into shells and backwards were added
  • Command to assign color of the [Custom] element by a user was added into the context menu of the element visualization settings
  • Commands to copy and insert of settings of links attachment and sizes were added into the context menu
  • Commands to copy and attachment of Connection point to links were appended into the context menu of the active element
  • The command [Add to last group] was appended into context menu. Addition of point elements into the last used group.
  • The command [Get global coordinates] to output the coordinates of the current element in global coordinate system into log was added in the context menu
  • Saving of last data buffer at stop of [Nonlinear analysis] calculation in the regime [process_file_save\step save and clear] was added
  • Possibility to move graph area after zoom using a scroll bar was added
  • False calculation of the algorithm of energy distribution [Critical speeds] at links in the models with parameterized elements of [Nonsymmetric link] was rectified
  • The program hang at [Critical speeds] algorithm at incorrectly built models at absence of the algorithm convergence was rectified
  • The program crash at work with postprocessing algorithm [Angular contact bearings] was corrected. It had fallen at deletion of points of history of time stamps
  • Package output of bearing data was corrected. Simultaneous output into data clipboard at rolling elements for several time stamps. Data only at last point were output
  • Error in functionality of 3D model display, sometimes leading to the program fall at the model rotation by mouse was rectified
  • Other minor bugs with interface were fixed
  • New materials were added in Help system

Changes in Dynamics R4.8.4

  • The new element – [Annular Seal] was added. Allows to calculate rotor systems with such seals dynamics behavior in nonlinear statement
  • The new element – [Torque Load] was added. Allows defining dynamic variations of the torque moment
  • The new element – [Shaft Stepping] was added. Takes into account additional torsional flexibility due to effect of penetration
  • Functionality for conversion of [Rigid link] elements was added
  • Rotation velocity [Velocity (Vr)] and rotation acceleration [Acceleration (Ar)] output were added to [Transient response] results browser
  • [Speed] and [Acceleration] output was renamed in Unbalance Response and Transient Response to [Velocity (Vt)] and [Acceleration (At)]
  • Other minor interface improvements were added
  • Element [Mass] visualization parameters were taken into account in subsystem separate view
  • Crash was fixed in the [Rolling bearing info] algorithm in case of calculation with empty selection for the Side1 combobox
  • Absence of properties visualization when its selecting in group element was fixed
  • Element [Dynamics load] in [unbalance] mode was fixed. Initial phase of element differs from the rotating phase on 90 degree
  • New help document was added in menu [Help\ How To...]
  • Other minor bugs with interface were fixed
  • New materials were added in Help system

Changes in Dynamics R4.8

  • The new element – [Seismic excitation]- was added [pdf]Eng (1.4 Mb)
  • Torsion flexibility was added to the [Coupling] element
  • The element [Unbalanced magnetic pull] was added
  • There is a possibility to set orthotropic flexibility for non-rotating subsystems in the [Coupling] element
  • Dialog of bearings import to model from the table data was added
  • Output of resultant values of displacement vectors, forces in the [Transient response] algorithm were added
  • Export to script of the models including the elements [Coupling] and [Trunnion coupling] was added
  • Sorting of assemblies and submodels in the model tree (context menu) was added
  • Additional views are appended to display the mode shapes at pressing the Front View and Side View buttons
  • Damping Ratio output was added to the list of frequencies for the [Natural frequencies] and [Critical speeds] algorithms
  • Problems with copying of subsystems with the connection points inside the model were fixed. Links connection had worked incorrectly.
  • Problems with the model calculation after using the [Restart submodels] menu command were solved.
  • Overwriting of *.trs file while saving model is prohibited
  • The program crash at Undo for deleting of the element from Groups was eliminated
  • The program crash with five degrees of freedom Angular contact bearing with geometry corresponding to the negative or zero clearance was eliminated
  • Other minor bugs with interface were fixed
  • New materials were added in Help system

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
  • element belonging on 2D-view.
  • 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

Dynamics R4 Main window T53 engine modeling modeling window Dynamics R4 GTE critical speeds, modeshapes GTE critical speeds T53 unbalance response Rotor LP Rotating speed law Transient Response, 3D Orbit Engine waterfall diagram Script nonlinear support Transient Response, 2D Orbit Unbalance response, 3D plot Modeshape table view Dynamics R4 Calculation report

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