1369722785

Release Notes for SIMPACK 9.3.2

New Features

Element: Input Function

25406 - [Documentation, Post] - Exporter for binary .if2 Input Function Files (same as 25295)

Binary .if2 SIMPACK Input Function files can now be exported from SIMPACK Post.

Automotive

25450 - Scripting method for applying vehicle velocities (see 25451)

A SIMPACK scripting method for applying the vehicle velocities to themodel was added which triggers the same functionality as the button "Apply vehicle velocities" in the actions menu of SIMPACK Pre:Spck.Slv.vehicleVelocities(modelObject)

Documentation

25406 - Exporter for binary .if2 Input Function Files (same as 25295)

Binary .if2 SIMPACK Input Function files can now be exported from SIMPACK Post.

Rail



Scripting



Fixed Bugs

Element: Subvar

25499 - Wizard - Performance of applying SubVar changes dependent on number of changes (same as 25491)

The time for updating the model to changes of SubVar values in SIMPACKWizard was dependent on the number of SubVars changed and took longerthe more SubVars were changed. Now updating the model for many SubVarsis as fast as if only one SubVar was changed.

1/18

25502 - Wizard - Invisible SubVars accidentially stored in .par.spck file in Wizard (same as 25489)

When switching components or when resetting parameters to their defaultin the Wizard, SubVars marked as invisible were accidentially stored inthe according par.spck files. Fixed now.

Solver: Measurements

25535 - Solver - SubVars representing text, element names and file names incorrect in sbr file (same as 25524)

When generating sbr files that contain Subvars, the SubVars of type - character string - element name - filenamewhere exported as numbers instead of with their according (text) value.Now all SubVars have the same value as in SIMPACK Pre in the result file and SIMPACK Post.

Scripting

25401 - Very poor scripting performance when assigning many Expressions to many Yout or Result Elements (same as 25339)

When assigning many elements to parameters of other elements in sjs scripting, e.g. assigning Expressions to result elements, then the performance was very poor. Fixed now.

25403 - sjs Scripting argDec not working properly (same as 24532)

The scripting function String.argDec() which can be used for formattingnumber output returned NaN instead of a properly formatted number when used in SIMPACK sjs scripting. Fixed now.

Release Notes for SIMPACK 9.3.1

New Features

Documentation

25282 - Possibly inconsistent Abaqus sim files used for fbi file

When generating the super element in ABAQUS and creating the accordingAbaqus .sim file which is used for generating a SIMPACK fbi file the.sim file can be inconsistent depending on the ABAQUS options used forgenerating the .sim file. This is a known issue in ABAQUS and is scheduled to be fixed by Abaqus for Abaqus 6.13.

For ensuring the problem does not occur when generating .sim files inAbaqus 6.12 the command "*RETAINED NODAL DOFS,SORTED=YES" must be usedwhen specifying the list of retained nodes for a substructure thatshould be converted into an .fbi file. The parameter "SORTED=NO" willlead to inconsistent data in the substructure's .sim file. When usingsuch a corrupt .sim file for the .fbi file generation and assigning theresulting .fbi file to a flexible body then the MBS model will yieldwrong and unexpected simulation results. "SORTED=YES" is thesave choice for all Abaqus versions.

2/18

The examples and the description in the SIMPACK documentation have been adapted accordingly.

Fixed Bugs

Element: Body flexible

25116 - [LOADS, Solver] - Forces/Torques applied on Moved Markers are not considered by LOADS (same as 25084)

Forces and torques which were applied onto a Flexible Body by a MovedMarker were not properly considered by LOADS. Fixed now.

25286 - Pre - Poor GUI performance when using Flexible Bodies (same as 25289)

With SIMPACK 9.3 scaling of Flexible Bodies was introduced. The scalingunfortuantely triggered a recomputation of the Flexible Body cache each time the model was changed even if it was not required.This slowed down the GUI dramatically. Fixed now.

Element: Expression

24315 - Solver - Expression to access u-Vector uses wrong index if unused elements are in the u-Vector

If u-Vector elements were accessed from Expressions, a wrong elementwould be evaluated if unused elements were in the u-Vector. Fixed now.

Element: Force

25150 - Engine - Force Element 69 'Piston-Liner Contact': Wrong Interaction with Liner Body (same as 25147)

Forces computed by the Force Element 69 'Piston-Liner Contact' wereapplied incorrectly to the line Body. Fixed now.

Element: Marker

24950 - Solver - PQR-Marker: Orientation of Reference Marker not ignored (same as 24899)

For the Marker type 4 'PQR-Orientation' the orientation of the ReferenceMarker was wrongly added to the orientation specified by the PQRparameters. This is not desired/expected when modeling with PQR orientation and was hence fixed so that in this case the orientation ofthe Reference Marker is ignored.

Element: Tyre

24890 - Automotive - Ftire Realtime mode (same as 24925)

FTire realtime co-simulation is available now.

PostProcessor: Animation

25090 - LOADS - Angular velocities not considdered properly during stress calculation in SIMPACK Post (same as 25088)

When displaying stesses in SIMPACK Post the rotational velocities werenot transformed into the BRF which lead to wrong stresses. Fixed now.

25192 - Post - Reload of result files with many SubVars very slow (same as 25203)

3/18

Reloading result files containing many SubVars was very slow. This hasbeen sped up significantly so that reloading a result file with 100000SubVars is now a matter of a few seconds instead of many minutes. Theproblem was especially visible when comparing reload times for result files generated by SIMPACK classic and SIMPACK 9 where the legacy converterd SIMPACK 9 model contained many more SubVars than the originalSIMPACK classic model.

PostProcessor: Plot

25192 - Post - Reload of result files with many SubVars very slow (same as 25203)

Reloading result files containing many SubVars was very slow. This hasbeen sped up significantly so that reloading a result file with 100000SubVars is now a matter of a few seconds instead of many minutes. Theproblem was especially visible when comparing reload times for result files generated by SIMPACK classic and SIMPACK 9 where the legacy converterd SIMPACK 9 model contained many more SubVars than the originalSIMPACK classic model.

Contact / Flex-Contact

25094 - RBE connected Marker not working within LOADS process (same as 25080)

The LOADS stress channels of the body nodal forces/torques were createdfor Markers of Flexible Type RBE, but their values were always zero. Fixed now.

Engine

25298 - IST "Tower Shell" not starting if install dir contains blanks (same as 25290)

The IST Tower Shell would not start if SIMPACK was installed into adirectory that contains blanks.This is fixed now.

Licensing

24888 - Parallel solver licensing incorrect for 13-16 threads (same as 24820)

The parallel solver would accidentially use 5 sets of licenses whenusing 13 to 16 cores. Now it correclty uses 4 sets of licenses for 9 to 16 cores.

LOADS

25094 - RBE connected Marker not working within LOADS process (same as 25080)

The LOADS stress channels of the body nodal forces/torques were createdfor Markers of Flexible Type RBE, but their values were always zero. Fixed now.

24986 - Spurious Measurement crash if Loads enabled and hydrodynamic bushing used (same as 24984)

A crash would occur during measurements if export of Loads data isenabled and a Marker was both used as From or To Marker of a Force

4/18

Element or Constraint and for applying forces generated by an EHDForce Element. Fixed now.

25195 - Conversion of .op2 to .stress file failing with shell elements

Converting NASTRAN .op2 files to SIMPACK stress files would fail if theNASTRAN model contained shell elements. Fixed now.

25241 - Wrong Load scaling factors in FEMFAT export (same as 25239)

During the Loads process for FEMFAT the modes have to be mapped andscaled so that SIMPACK computed modes and FE computed mode match. This mapping was accidentially done twice so that it did not have an effect. Since the modal coordinates are scaled accordingly alreadywhen exported to FEMFAT the scaling factors in the ..._channel.maxfiles must be set to 1.0. This is now correclty implemented.

25251 - Mapping of eigenmodes fails in LOADS if master nodes with

CAD: CatSIM (V4/V5)

24079 - CAD Interfaces - Update CATSIM for CATIA V5R21 and SIMPACK 9

CatSIM V5 was updated to generate native SIMPACK 9 .spck models.Additionally CATIA V5, R21 is now supported.


24277 - PostProcessor - Exporter for deformation of Flexible Bodies

Deformations of Flexible Bodies can now be exported from SIMPACK Post.Time histories for both positions and velocities can be exported fora single or multiple nodes to an ASCII file. This file can also beread into SIMPACK Post to display plots of the deformation components.Exported components are x,y,z, angle X, angle Y, angle Z, ABS.

24293 - FlexModal - Mass and stiffness scaling of Flexible Bodies

Scaling of both, the entire mass matrix and stiffness matrix of FlexibleBodies was added. This enables users to check the influence of theoverall mass and stiffness of the Body on the simulation results without the need to reiterate through a reduction and export processon the FE side.

Element: Force

24393 - [Solver, Rail, Control] - Force 78 "Rail-Wheel interface" availability of -Q and -Y output value for Control Elements

To enable using the Force Element Output Values 1 and 2 (-Q and -Y) ofForce Element 78 in control loops these two Output Values are now alsocomputed during the time integration and not only during measurements. The other Output Values, which are only used for force arrows, are onlycomputed during measurements.

24610 - Contact / Flex-Contact - Enhanced error message for Force 69 'Piston-Liner'

The error messages for the Force 69 'Piston-Liner' were greatly improvedto help the user identifying the cause of the error and hint how toresolve the problem indicated by the message.

Element: Input Function

23757 - Input Functions to optionally use interpolation settings from file

It is now possible to specify whether the inter- and extrapolationsettings for an Input Function should be used from the file from which the values are read or should be defined locally in the model.

24306 - Input Function scaling

Input Functions can now be scaled in the x, y and z direction. The scaling is specified and performed separately for each axis. In theInput Function plot the points are displayed unscaled and the plottedcurve uses the scaling.

Element: Joint

6/18

24460 - Automotive - New track joint rotational sequence yaw(z), roll(x), pitch(y)

The Joint type 19 'Automotive Track Joint' was expanded to support a new DOF sequence: s-y-z-psi-phi-gamma

Element: Rail Wheel Contact

18630 - Rail - Rail Roller Rig support

The modelling of roller rigs has been enabled for Rail. Instead of beinginertia-fixed or mounted on a moving ballast mass, the rail profile maynow also be on a rotating Body. The Hertzian contact geometry alsoconsiders the roller curvature in longitudinal direction.

19958 - Rail - Support for v=0 in rail-wheel contact for equilibrium calculations

The vehicle velocity can now be set to zero (v=0) in rail vehicleequilibrium calculations. The Equilibrium solver will detect this andswitch the rail-wheel tangential force calculation off. This easesbringing the vehicle into an equilibrium in standstill.

24036 - Rail - Improved update of linear rail-wheel profiles in GUI

If linear rail-wheel profiles are active and changes are made in theRail-Wheel Pair or Track Pair dialogs, then the user is now asked ifthe linear rail-wheel profiles should be updated. Previously theuser had to navigate to the Vehicle Globals dialog and activelytrigger the update in these cases.

24393 - [Solver, Rail, Control] - Force 78 "Rail-Wheel interface" availability of -Q and -Y output value for Control Elements

To enable using the Force Element Output Values 1 and 2 (-Q and -Y) ofForce Element 78 in control loops these two Output Values are now alsocomputed during the time integration and not only during measurements. The other Output Values, which are only used for force arrows, are onlycomputed during measurements.

Solver: Static Equilibrium

19958 - Rail - Support for v=0 in rail-wheel contact for equilibrium calculations

The vehicle velocity can now be set to zero (v=0) in rail vehicleequilibrium calculations. The Equilibrium solver will detect this andswitch the rail-wheel tangential force calculation off. This easesbringing the vehicle into an equilibrium in standstill.

24462 - Access Function for setting accelerations during equilibrium calculation

The functionality of the User Routine Access Function spck_ds_JointStwas expanded so that setting of Joint state accelerations is now allowedduring equilibrium solver tasks.

Automotive

24380 - Vehicle Globals handling improvement

The Vehicle Globals dialog was inconsistent and confusing. This dialog

7/18

has been redesigned to now show the standard "Cancel", "OK" and "Apply"buttons, where OK and Apply will only apply the settings to the keywordsand do not trigger the propagation of the values to the translationaland rotational velocities of the Joint states. To achieve the latter, a new button "Apply to vehicle now" was addedwhich is only enabled when no changes have been made to the settings inthe dialog or after Apply was clicked. This button triggers assigningoft the velocities to the respective Joint states.

Documentation

23443 - New MatSIM tutorial

A new tutorial was added which describes working with MatSIM.

24422 - Start Menu entry for SIMPACK Documentation

A start menu entry is now generated for the SIMPACK Assistant when installing SIMPACK on Windows.

FlexModal

23812 - Support for ABAQUS 6.12 .sim file interface

SIMPACK now supports results and models generated with ABAQUS 6.12. Thisincludes support for the .sim file FE results.

24437 - Flexible Bodies with reduced meshes

To be able to increase graphics performance it is now possible touse a simplified geometry for the Flexible Body. To achieve this,an existing .fbi file and an additional mesh file are passed to the.fbi file generator. The geometry from the mesh file will then replacethe graphics in the .fbi file. The mesh file to be used has to be generated outside of SIMPACK.

24444 - Support for ANSYS 14.5

SIMPACK now fully supports FE result and models generated by ANSYS 14.5.

Infrastructure

24216 - Performance improvements for model loading

The performance of loading substructured models was significantly improved.

LOADS

23812 - Support for ABAQUS 6.12 .sim file interface

SIMPACK now supports results and models generated with ABAQUS 6.12. Thisincludes support for the .sim file FE results.

PostProcessor

24514 - SIMPACK file extensions registered with Windows

8/18

The following SIMPACK file extensions are now registered with Windowsduring the SIMPACK installation so that the respective executable is started by a double click on a file with these extensions: .spck, .buspck, .pspck -> simpack-gui.exe .sjs -> simpack-slv.exe (with arg -s) .qs, .qsa -> simpack-post.exe (with arg -s) .spf, .sbr -> simpack-post.exe

PreProcessor

24514 - SIMPACK file extensions registered with Windows

The following SIMPACK file extensions are now registered with Windowsduring the SIMPACK installation so that the respective executable is started by a double click on a file with these extensions: .spck, .buspck, .pspck -> simpack-gui.exe .sjs -> simpack-slv.exe (with arg -s) .qs, .qsa -> simpack-post.exe (with arg -s) .spf, .sbr -> simpack-post.exe

Rail

24380 - Vehicle Globals handling improvement

The Vehicle Globals dialog was inconsistent and confusing. This dialoghas been redesigned to now show the standard "Cancel", "OK" and "Apply"buttons, where OK and Apply will only apply the settings to the keywordsand do not trigger the propagation of the values to the translationaland rotational velocities of the Joint states. To achieve the latter, a new button "Apply to vehicle now" was addedwhich is only enabled when no changes have been made to the settings inthe dialog or after Apply was clicked. This button triggers assigningoft the velocities to the respective Joint states.

Scripting

24506 - Scripting unit string access for SubVars and origin access for all elements

Accessing the unit string of SubVars (e.g. N for forces) is enabled viathe new Scripting SubVar attribute: mySubVar.SIUnitString // read only, returns unit string of this subvar // in coherent SI units, e.g. N for force

Also script accessing the origin of all elements was enabled via: myElement.origin // read only, returns file and dir as string in // which this Element is defined

24516 - Scripting support for File.flush()

A new method was added to the Scripting File object for being able toexplicitly flush files while they are written. The method is called File.flush()

9/18

and is available for SIMPACK and QSA scripting.

Solver

24353 - New Realtime module SIMPACK RT

A new product for realtime simulations was added to SIMPACK, SIMPACK RT.SIMPACK RT enables realtime simulations without the need to export andcompile a model for a specific target platform. SIMPACK RT supports allmodelling elements of SIMPACK. SIMPACK RT also comes with realtimeanimation capabilities and runs on all RT enabled Linux systems.

Wizard

24359 - Wizard database, model structure and GUI refinement

The SIMPACK wizard database and project structure was refined to enableclean save handling and also to enable using the same component with thesame parametrization more than once. Also the Wizard GUI was streamlined.

Fixed Bugs


24311 - FlexModal - Flex Marker prints availability with INFO Log level

For Markers on Flexible Bodies the connection info of each Marker is nowprinted in message log when the model is loaded if the log level INFO isselected.

24404 - FlexModal - Force distributing constraints of ANSYS incorrectly handled by Loads

Force Distributing Constraints of ANSYS models were not handled correctly by LOADS Stress&Strain. This has been fixed.

24413 - LOADS - Errors when generating NASTRAN input decks

The generation of NASTRAN input decks failed when IRM modes were usedfor the flexible Body. This has been fixed. Also the handling ofcentrifugal loads was corrected.

24546 - Wind - Rotorblades generated with mass matrix not depending on deformation

Rotorblades are now generated with the Flexible Body setting set to mass matrix not depending on deformation.

24675 - FlexModal - Consideration of geometric stiffening terms due to the reference motion

The geometric stiffening terms due to inertia loads were not consideredin previous SIMPACK releases. This has been fixed now.

24805 - Improved flexible Body visualization for certain graphics cards

For the visualization of flexible Bodies, SIMPACK uses an OpenGL featurecalled two-sided lighting. Two-sided lighting is hardware accelerated bythe recommended NVIDIA Quadro FX graphics cards series. For graphicscards which do not offer hardware acceleration for two-sided lighting,

10/18

such as the NVIDIA Geforce series, this can lead to very poor graphicsperformance. To improve the performance for these graphic cards, a special software emulation was added. This software emulation can beactivated in the Extras->Options->Graphics tab by checking the box "Disable hardware accelerated two-sided lighting". Performance gainscan be orders of magnitudes. Please note that checking this option whenusing graphics cards with hardware accelerated two-sided lighting, willlead to a decrease in visualization performance.

24821 - LOADS - NASTRAN models with CBEAM elements rejected for stress computation

If a NASTRAN model contained CBEAM elements then SIMPACK would not create the SIMPACK stress file. Thus no stresses could be computed anddisplayed for such models. Now the CBEAM statements are simply ignoredwhen generating the stress file. Consequently SIMPACK can now computeand display stresses for such models.

Element: Control Element

24174 - [Solver, Control] - Sporadic instability of Control Elements when printing to message log

Control Elements 116, 117, 143, 148, 154, 155 would sometimes triggeran abort of the SIMPACK solver while printing information to the message log area. This has been fixed now.

24186 - Control - Missing codepage handling in FMI and wrong loading of the dependent DLLs

Control Element 238 'FMI 1.0 import' did not properly handle differentcodepages used in the .fmu file. Also it did not properly load DLLs thatwere required by the main fmu DLL. Both problems have been fixed.

Element: Force

23454 - Solver - FEL 87 'Joint Force/Torque' using "To BRF" instead of "From Marker"

Force Element type 87 "Joint Force/Torque" was using the "To" Body BRFfor returning the Joint constrained forces and torques. This was notdesired by the user in many cases. Now the default is to output theseforces/torques in the From Marker of the according Joint. Additionallythe user can now specify the Marker which should be used for returningthe force/torque components.

24251 - Solver - Floating Point Exception in Force Element Type 225 'Gear Pair'

In some rare circumstances the Force element 225 'Gear pair' wouldtrigger a floating point exception which lead to the abortion of thesolver run. This has been fixed now.

24316 - Solver - Wrong damping used when clearance defined for FEL 5 'Spring-Damper parallel cmp'

When for a Force Element of type 5 'Spring-Damper parallel cmp' a clearance in z is defined, SIMPACK incorrectly used the y-damping valuefor the damping in the z direction. This has been corrected.

24423 - Contact / Flex-Contact - Error in FEL 69 'Piston-Liner Contact' in case of interpolated Markers on Flexible Body (liner)

For the Force Element 69 'Piston-Liner Contact' if Markers on the

11/18

Flexible body (liner) are defined as RBE or interpolated, the followingerror message appeared and the simulation was not successful:"Cannot set transient flexible Body node position" This has been fixed.

24588 - PreProcessor - Error when editing Forces of type 47 'Multi Point Bearing axial'

When editing a Force of type 47 'Multi Point Bearing axial' in SIMPACKPre, then the following error occurred and the model could not be saved: ERROR: Error: Error retrieving propertiesFixed now.

Element: Marker Moved

24252 - Contact / Flex-Contact - Corrected legacy conversion for Marker 96 "Curve-Curve 2D-Contact"

The legacy conversion for Marker 96 "Curve-Curve 2D-Contact" previouslyconverted mirrored Markers (marker.par(7:9) incorrectly. Since mirrored Markers are not supported the legacy conversion now exits with an errormessage in these cases. To properly load such a model into SIMPACK 9,the model must be adapted manually in SIMPACK classic (see the legacyconversion documentation).

24258 - PreProcessor - Legacy conversion for Marker 87 overwritten states causing crash

If a SIMPACK classic (.sys-file) model containing a Marker of type 87 "Surface-surface 3D contact" is used as a submodel and if the algebraicstates of the Marker are overwritten in the main model, then SIMPACK would crash during the legacy conversion of the model. Fixed now.

24376 - Contact / Flex-Contact - Incorrect legacy conversion of rotated 2D contour contact

3D contact Moved Marker 87 in SIMPACK Classic models was not correctlylegacy converted when using a contact surface from a rotated 2D contour:In SIMPACK 9.2, Primitive 43 'Surface' would be used for representingthe contact surface. This was not correct because Primitive 7'Rotational Body' is the appropriate Primitive for this kind ofsurface geometries. Now Primitive 7 is used when legacy convertingSIMPACK Classic models.Attention: SIMPACK 9.2 models using Primitive 43 will not beautomatically converted. The Primitive must be switched from type 43to type 7 by hand.

24479 - PreProcessor - Marker 100 'Spherial Buffer Contact' not working

If a model containing Marker 100 'Spherial Buffer Contact' was loadedor if such a Marker was newly created, a solver error message appearedand the model could not be used. This has been fixed now.

Element: Primitive

23451 - PostProcessor - Primitive 19 'Point-To-Point' not properly deformed on Flexible Body in Post

If a Primitive of type 19 'Point to Point' uses Markers on Flexible Bodies, it was not properly "deformed" during animation in SIMPACK Post.However it was properly deformed in SIMPACK Pre. Now it is properly

12/18

deformed both in Pre and Post.

24372 - [Contact / Flex-Contact, Other] - Improvements and Fixes in Surface Primitive 43

The parameter texts for surface Primtive 43 were greatly improved andsuperfluous parameters were removed. Also now unit information is readfrom csv files for the surface type "deformed cylinder"

24480 - PostProcessor - Mirroring of Primitive type 39 incorrect in SIMPACK Post

If a Primitive is mirrored in the model and the results are loaded intoSIMPACK Post, the mirroring in y and z was ignored whereas mirroring inthe x direction worked properly. Now mirroring in all directions isworking correctly.

Element: Rail Wheel Contact

24449 - Rail - Solver crash if a Track Pair refers to only one Rail-Wheel Pair

If a Track Pair references only one Rail-Wheel Pair SIMPACK would crash.This has been fixed.

Element: Reference Frame

24129 - Solver - Solver tuning option for merging Reference Systems

A new solver tuning option was added which allows merging reference systems. This option is enabled per default and can be disabled via theGlobal Settings in a model. Utilizing this option speeds up the solverfor models with many Reference systems, e.g. models with many Substructures.

Element: Result

24463 - PreProcessor - Malfunction if a disabled Result Element "Container" is enabled again

If a Result Element type "Container" is disabled all minor tree elementsof this Result Element are disabled as well. If the Result Element isenabled again, the minor tree elements were not enabled again.This has been fixed.

24472 - User Routines - Result Element parameter dimension sometimes still restricted to 32

The number of Result Element and result channel parameters was stillrestricted to 32 in some cases. Now the maximum number of resultparameters and result channel parameters is 130. Even though theparameters are set using an Access Function it is currently not possibleto use more than 130 parameters. This will be fully addressed in a later SIMPACK release.

Element: Substructure

24053 - PreProcessor - Wrong behaviour if additional SubVar file is loaded for a Substructure

If an additional SubVar file is loaded for a Substructure and one ormore of the SubVar names in this file were already used in the submodeland one SubVar references another SubVar from the submodel this

13/18

reference was not updated properly. The name prefix was missing in theformula string. This has been fixed.

Element: Subvar

24067 - PreProcessor - Changing of SubVar type not properly working in some cases

If a SubVar type is changed, e.g. from "0" to "$J_X", an error occurredif this SubVar is referenced in a location that the expects the type tobe e.g. Joint. When switching the definition from e.g. "$J_X" to "0",no error would occur in this case. Now both cases work properly.

24548 - PreProcessor - SUBSTR_ID returning wrong result for grouped SubVars

When a Substructure SubVar was contained in a group and the SUBSTR_IDaccess function was used for the definition of that SubVar, then thewrong value was returned for SUBSTR_ID. If the SubVar was not grouped then the correct value was returned. Now the correct value is returnedin both cases.

Element: Track

24431 - PreProcessor - Default fade-in length manipulating measured track data

If a Track is defined by measured Track data via a .trm file (curvaturedpsi/ds), the curvature always started with an initial value of zeroeven if the .trm file contained a different initial value. Fixed now.

24451 - [Automotive, Rail] - Internal error and instability of SIMPACK Pre after adding Cartographic Track segments

SIMPACK Pre generated an internal error when a superelevation or vertical Cartographic Track segment was added, the model was saved and then the Track dialog was re-opened. This has been fixed.

24656 - [Automotive, Rail] - Vertical CIR transitions ignored for SIMPACK format Cartographic Track files

When Cartographic Track files in he SIMPACK format were read, then the vertical CIR transitions were not read properly. Fixed now.

Element: u-vector

24453 - PreProcessor - Error when loading .sys main model with .spck submodel when using u-Vector Elements

When loading a .sys main model and a .spck submodel already exists anerror occurred during u-Vector Element assignment. This has been fixed.

Solver: Nominal Forces

24151 - [All, PreProcessor] - Multi-edit not working properly in Preload Dialog

The multi-edit functionality in the Preload dialog has been improved.It allows now to define "relate to" settings directly in the multi-editdialog. A number of additional checks has also been added to the dialogto prevent circular relationships and other logical mistakes.

PostProcessor: Animation

24160 - PostProcessor - Improved FEMFAT export

14/18

The following improvements were added to the FEMFAT exporter:- corrected formulas for computing the values which are exported- ensured scaling factors are properly used- enabled batch exporting via QSA Scripting- ensured casing of file names is preserved correctly

24303 - PostProcessor - Error during animation if no modes available for Flexible Body Primitive

SIMPACK Post would not animate results if the model contained a FlexibleBody Primitive but the according Body did not have any modes.This has been fixed and the behaviour is now as follows: - no error message or warning appears- if body is rigid, flex Primitive does not appear in the animation - if Body is Flexible (but without any modes), flex Primitive appears undeformed in the animation

24327 - PostProcessor - Substructure Isys objects not ignored for view refit and bounding box

In SIMPACK Post, when for an animation the flag is set to "Exclude Isys fixed objects", the Objects attached to substructure Isys'were still considered. This lead to a situation where views could not besuccessfully modified and a refit did not work as expected if e.g. theroad or track was attached to a Substructure Reference System. This hasbeen fixed now such that also Geometry attached to a reference system ona Substructure are ignored if the "Exclude Isys fixed objects" is set.

24404 - FlexModal - Force distributing constraints of ANSYS incorrectly handled by Loads

Force Distributing Constraints of ANSYS models were not handled correctly by LOADS Stress&Strain. This has been fixed.

24545 - PostProcessor - PtP Primitive not displayed if non ASCII character used in Marker name

If a Primitive of type 19 'Point-To-Point' referenced a Marker which had a non ASCII character in its name (such as a German Umlaut), thenSIMPACK Post would not properly display that Primitive. Fixed now.

PostProcessor: Plot

24467 - Scripting - Scripting and GUI malfunctions with text frames in SIMPACK Post

It was not possible to add more than one text or bitmap frame to a cellvia QSA Scripting. Also when adding a text frame via scripting and thefitFrameToText option was set, then the size wasn't computed correctlyif the script was executed in batch mode. Both issued have been fixed.

Documentation

24344 - Release Notes of previous versions

The SIMPACK documentation now contains the release notes not only of thecurrent release but also for all previous releases. This allows easycatching up when releases have been skipped.

Engine

15/18

24031 - Standalone model missing MBF file for .SID based Flexible Bodies

When generating a standalone model which references an .MBF file this.MBF file was not included thus making the model not working correctlyif it relied on the .MBF file e.g. for an EHD simulation. This situationonly occured when working with .SID file based flexibly Bodies where the.MBF file is implicitly referenced. Now in such cases the .MBF file isadded to the standalone model.

FlexModal

24278 - Incorrect conversion of .fbi-files from SIMPACK classic

.fbi-files that have been generated with SIMPACK Classic could sometimesnot be converted into the SIMPACK 9 .fbi format. The conversion couldfail for two reasons:- an error occurred when reading the version of the classic .fbi file. - the unit conversion has not been applied to the geometric stiffening terms. Both issues have been fixed.

24279 - Empty matrices in .fbi-files when writing with poor network connectivity

When writing .fbi files to a file system on a network with poor network connectivity or small file system cache, then sporadically .fbi fileswith empty matrices were generated. The .fbi writing were adapted so that they can successfully write fbi files to drives with limited resources. Also the error messages for these cases were improved.

LOADS

24314 - ANSYS input deck incorrect when eigenmodes max. frequency specified

If for a Flexible Body in the Loads tab a maximum frequency is specifiedfor the eigenmodes, then the ANSYS input deck for the stress recoverywas generated incorrectly. The number of eigenmodes to be extracted wasset to zero in this case which lead to errors during the ANSYS run.This has been fixed now.

PostProcessor

24542 - Spurious crashes of SIMPACK Pre

Spurious crashes occurred in SIMPACK Pre in different situations. Thesecrashes were triggered by a bug in the underlying GUI toolkit Qt. TheQt bug is now fixed and the spurious crashes are no longer occurring.

24658 - SIMPACK Post crash after second .sbr reload

If an sbr file was modified and reloaded more than once while it was loaded in SIMPACK Post, then SIMPACK Post would crash. Fixed now.

24840 - SIMPACK Post sporadically writing garbage to .spf file

On Linux SIMPACK Post would sporadically write garbage to .spf file whensaving a project. These .spf are then no longer loadable. It is ensurednow, that no garbage is written to the project files anymore.

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24255 - Concole window visible when SIMPACK Post executed

When launching SIMPACK Post on Windows either from the desktop icon orvia the start menu entry, a console window would appear and stay untilSIMPACK Post was closed again. Now the console window properly disappears once SIMPACK Post is visible.

PreProcessor

24443 - Single quote in 2D Page block diagram annotation leads to unreadable file

Block diagram annotations containing a single quote, would be savedincorrectly leading to an unreadable .spck files. This has been fixed.

24542 - Spurious crashes of SIMPACK Pre

Spurious crashes occurred in SIMPACK Pre in different situations. Thesecrashes were triggered by a bug in the underlying GUI toolkit Qt. TheQt bug is now fixed and the spurious crashes are no longer occurring.

24072 - CG and I-Tensor visualization settings not saved to ini file

The CG and I-Tensor visualization settings were not saved to the SIMPACKini file. Now this works properly.

24106 - Improved table handling: speed and small bugs

Throughout the SIMPACK GUI the performance of tables was greatlyimproved especially for inserting large numbers of rows and columns,for pasting large amounts of data from the clipboard and for displaying large tables. Also the interactions in tables via the icons were streamlined.

24180 - Improved performance of online solver

For online solver modes that use a 3D animation, such as online integration, online kinematics and online eigenmodes, the performance was greatly improved.

24486 - Multi-edit failing for Combo Box parameters

When multi-editing elements that have parameters represented byCombo Boxes, then the Combo Box parameters were changed without user action. This has been fixed so that parameters are no longerunintentionally modified during multi-edit.

24499 - Crash when modifying submodel if main model also open in SIMPACK Pre

If a model contains to levels of Substructure and a submodel from aSubstructure on the second level is opened and modified while the mainmodel is also loaded, SIMPACK Pre would crash. This has been fixed.

Solver

24127 - Improved Solver performance

The overall solver performance was improved by internal optimizationsof the SIMPACK formalism. For the single thread solver a speedup of up

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to 10% was realized and for the parallel solver the speedup is up to 25% in a six thread scenario (speedup was measured compared to parallelsolver with six threads with the previous SIMPACK version).

General

23945 - Crash when switching additional SubVar file

When exchanging additional SubVar files used for a Substructure a crashwould sometimes occur. This has been fixed.

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Documents