Major improvements
- FLAC3D v900 is officially in Beta.
- Added AWS cloud computer and cluster creation wizard, available under the Tools menu.
- Major user interface update. Central workspace is now divisible by the user.
- Updated the license not found dialog, added a security diagnostics output option for better support.
New features and improvements
- Added support for non-constant non-linear structural element properties.
- The User Interface can now detect if GPU support was enabled in Remote Desktop connections and stop forcing ANGLE mode and stop removing all plots.
- History/Table plots using log axes now have improved display.
- FLAC2D/3D Added ability to include accelerations in results files.
- FLAC2D/3D The 'zone validate' command now has the option to detect unconnected regions.
- FLAC2D/3D The demonstration size limit was raised to 1000.
- FLAC2D/3D Sketch: Added background grid
- FLAC2D/3D Sketch: Added command to specify deleting mode for extrude paths.
- FLAC2D/3D Sketch: Added command to create segment between two points.
- FLAC2D/3D Sketch: Added ruler.
- FLAC2D/3D Sketch: The keywords 'zone-length' and 'length' now work with segments.
- FLAC2D/3D Sketch: Edge length is not displayed on information dialog and object properties.
- FLAC2D/3D Sketch: Improved performance of zoom when curved segments are present.
- FLAC2D/3D Sketch: Added ability to select objects by group.
- FLAC2D/3D Sketch: Improved ability to import 3D DXF into 2D Sketch.
- FLAC2D/3D Sketch: Can select multiple edges and assign the same ratio to them.
- FLAC2D/3D Sketch: Added ability to merge nodes.
- FLAC2D/3D Sketch: New tool added to clean up edges and points outside meshed regions.
- FLAC2D/3D Sketch: Added grid snapping to extrusion scene.
- FLAC2D/3D Sketch: Added ability to assign ratios independent of edge directions.
- FLAC2D/3D Sketch: Added polyline tool.
- FLAC2D/3D Sketch: Added option to reverse (flip) ratio direction.
- FLAC2D/3D Sketch: Added option for extrusion path to UI.
- FLAC2D/3D Sketch: Added extrusion option to keep ends parallel to construction pane.
- FLAC2D/3D Sketch: Added point and clean mesh tool buttons.
- FLAC2D/3D Sketch: Popup editor to add/modify nodes/segment on extrusion view.
- FLAC2D/3D Sketch: Warning message is shown when zones are not able to be created by rotation.
- FLAC2D/3D Sketch: Added 'sketch path translate' command.
- 3DEC Changed minimim size for flow zones to equal the block tolerance.
Bug Fixes
- Fixed error in clock synchronization tests in the web license logic, causing false failures.
- Fixed errors in the struct.prop.index FISH function.
- Fixed error importing DXF files, that caused a crash in the Linux version.
- Fixed bug in fracture connectivity command.
- Fixed bug in set fracture FISH intrinsics.
- The constitutive model template and wizard should work again for v900 and Visual Studio 2022.
- The geometry plot item is more likely to automatically update when geometry data changes.
- The geometry plot item was not saving/restoring the polygon cut line width.
- The Norsand model was updated for better numerical stability.
- Fixed crash if the history/trace update interface is set to zero.
- Fixed an intermittent history read error that could occur if a history plot was visible during a model save.
- The 'program log-file' command was not working with the 'truncate' keyword.
- Increase maximum moduli for some stress-dependent constitutive models.
- PFC Fixed periodic space bugs for rblock-rblock contacts, and for spring network contact model.
- FLAC2D/3D Fixed bug assigning anisotropic fluid properties.
- FLAC2D/3D Fixed 'zone.mech.prop.name' FISH intrinsic.
- FLAC2D/3D Change all 'stres-strength' labels to 'strength-stress' for clarity.
- FLAC2D/3D Fix crash in model pane using bool type properties.
- FLAC2D/3D Improved performance of attach conditions in MPI.
- FLAC2D Many fixes to axisymmetric calculations.
- FLAC2D Many fixes to 2D structural elements.
- FLAC2D Fies to 2D interface logic.
- 3DEC Fix to contact area calculations for mismatched rigid blocks.
- 3DEC Fix bug in joint fluid flow when using 'block zone gen-new'
Major improvements:
- FLAC2D/3D, PFC, 3DEC, and MassFlow all now use the same unified installer.
New features and improvements
- Sped up performance of the GEOMETRY-DISTANCE range element significantly.
- Fix to the web license system to make it more tolerance of intermittent network connections.
- The web license clock synchronization test should not fail incorrectly any more.
- The various user defined model templates should now work for v900 and Visual Studio 2022.
- Fix bug assignming anisotropic fluid properties.
- FLAC2D/3D Sketch: Lots of features/support for out of plane extrude paths.
- FLAC2D/3D Zone plotitem generation speed improvements.
- FLAC3D Removed ZGROUP plot item, integrated capability into the main zone plotitem. More than 10x faster to generate.
- FLAC3D Added grid import from MIDAS.
- FLAC2D More 2D structural element support.
Bug Fixes
- Fix bug displaying group name in caption on plot.
- Fix bug rendering polygons intersecting a cutting plane.
- Fix history read error that could occasionally happen during a save if a history plot was visible in the UI.
- FLAC3D Fix for save file compatibility with v700 and apply face conditions.
- FLAC2D fixes and adjustments to axisymmetric calculations.
- 3DEC Fixed threading bug in calculations - should be faster.
Major improvements:
- Implementing Phase 1 (out of 5) of an updated Graphical User Interface.
- FLAC2D Initial implementation of axisymmetric analysis - mechanical calculations only (no interfaces). To configure for axisymmetry use command MODEL CONFIG AXISYMMETRY.
- FLAC2D Enabled SEL dynamic logic and added some examples.
- FLAC2D Enabled 'Scale Box' plotitem.
- FLAC2D Enabled 'Boundary' plotitem.
- MassFlow Added MassFlow section to the documentation
New features and improvements
- FLAC2D/3D Display current shape creation tool in the Sketch toolbar.
- FLAC2D/3D Added an option to omit past states when plotting yield states.
- FLAC2D/3D Added "rotation" parameter to the orthotropic elastic model.
- FLAC2D/3D Anisotropic fluid model now can accept hydraulic-conductivity properties.
- FLAC2D Enabled/fixed UI range elements for 2D.
- FLAC2D Enabled Dynamic Input Wizard in the Tools menu.
- FLAC2D Enabled SEL link FISH functions.
- FLAC2D SEL NODE LIST command: added information about translational and rotational acceleration.
- MassFlow Added MASSFLOW RECORD command.
- MassFlow Added FISH and plot items for mine blocks.
- PFC Improved performance of wall-zone logic when attaches are present.
Bug Fixes
- Fixed issue with generating movie frames.
- Fixed CTRL+2 keys combination to focus in the console.
- Fixed issue with throwing an exception if unable to create/write 'projectmaster.dat' when loading a project.
- Fixed issues when exporting user-defined data plotting to a datafile by group.
- Fixed issues with some error dialogs staying on top of all system windows.
- Fixed bugs in command FRACTURE INTERSECTION COMPUTE WITH-GEOMETRY.
- FLAC2D/3D Fixed an exception when merging points in Sketch.
- FLAC2D/3D Fixed geogrid plot with coupling stress.
- FLAC2D Fixed issue with internal designation of FLAC2D licenses which prevented using Technical Support dialog.
- PFC Fixed weights calculation for wall-facet contacts.
Major improvements:
- Implementing Phase 1 (out of 5) of an updated Graphical User Interface.
- FLAC2D Initial implementation of axisymmetric analysis - mechanical calculations only (no interfaces). To configure for axisymmetry use command MODEL CONFIG AXISYMMETRY.
- FLAC2D Enabled SEL dynamic logic and added some examples.
- FLAC2D Enabled 'Scale Box' plotitem.
- FLAC2D Enabled 'Boundary' plotitem.
- MassFlow Added MassFlow section to the documentation
New features and improvements
- FLAC2D/3D Display current shape creation tool in the Sketch toolbar.
- FLAC2D/3D Added an option to omit past states when plotting yield states.
- FLAC2D/3D Added "rotation" parameter to the orthotropic elastic model.
- FLAC2D/3D Anisotropic fluid model now can accept hydraulic-conductivity properties.
- FLAC2D Enabled/fixed UI range elements for 2D.
- FLAC2D Enabled Dynamic Input Wizard in the Tools menu.
- FLAC2D Enabled SEL link FISH functions.
- FLAC2D SEL NODE LIST command: added information about translational and rotational acceleration.
- MassFlow Added MASSFLOW RECORD command.
- MassFlow Added FISH and plot items for mine blocks.
- PFC Improved performance of wall-zone logic when attaches are present.
Bug Fixes
- Fixed issue with generating movie frames.
- Fixed CTRL+2 keys combination to focus in the console.
- Fixed issue with throwing an exception if unable to create/write 'projectmaster.dat' when loading a project.
- Fixed issues when exporting user-defined data plotting to a datafile by group.
- Fixed issues with some error dialogs staying on top of all system windows.
- Fixed bugs in command FRACTURE INTERSECTION COMPUTE WITH-GEOMETRY.
- FLAC2D/3D Fixed an exception when merging points in Sketch.
- FLAC2D/3D Fixed geogrid plot with coupling stress.
- FLAC2D Fixed issue with internal designation of FLAC2D licenses which prevented using Technical Support dialog.
- PFC Fixed weights calculation for wall-facet contacts.
Major improvements:
- Structural element logic added plastic beams, ready for use.
New features and improvements
- Update to the Norsand model.
- FLAC2D Enabled fluid particle tracking.
- FLAC2D/3D Add option of turning off Maxwell damping for structures.
- 3DEC Added commands BLOCK THERMAL ACTIVE ON/OFF and BLOCK FLUID ACTIVE ON/OFF.
Bug Fixes
- Several fixes to the second/shared license system. The second license available on the same computer that the first is claimed on should work more reliably now.
- FLAC2D Fixes to shear strain plotting, listing, and FISH.
- FLAC2D Fixes to the 2D interface logic.
Major improvements:
- FLAC2D Official Beta Release.
- FLAC Changed default local damping to 0.59 to speed up convergence for static mechanical solution.
New features and improvements
- Ongoing documentation improvements.
- FLAC2D Many improvements for FLAC2D Beta Release.
- FLAC Separated combined damping and local damping constants, left the former at 0.8.
- FLAC Updated fluid implicit pcg solver logic to synchronize its functionality with thermal implicit pcg solver.
- FLAC Updated installer.
- PFC Removed the "mc-" prefix from the properties for contact Mohr model.
Bug Fixes
- Fix to shared license if the original license holder crashes.
- FLAC Fix a crash when assigning boolean properties in ModelPane->SetModelProperties.
- FLAC Fix a bug in exporting grid in binary format.
- FLAC Fix a bug in interface plotitem restore.
- FLAC Fix a bug related to incorrect assignment of the confined modulus in CYSoil model.
Major improvements:
- FLAC3D An improvement to zone stiffness stability calculations has been made.
- This results in zones converging to a static solution in roughly 40% of the steps required previously.
- The stable dynamic timestep is now 2.6 times larger than it was before.
- Note that other features in the model (structural elements, Rayleigh damping, etc) may modify these values.
- A similar improvement to structural element stability has been made.
- This is not as consistent. You will see bigger improvements in static than dynamic.
- 2D elements (shells, liners, geogrids) will see a bigger improvement than 1D (beams, cables, piles).
- No change was made to link stiffnesses, so if those were dominating convergence or timestep no improvement will be seen.
- If the limiting factor was the stiffness in a cable element aligned with the X, Y, or Z axis then a performance decrease could occur.
New features and improvements
- Structural element logic updates
- For shell-type elements, the isotropic elastic model is now named "elastic" and has properties "young" and "poisson", no longer "isotropic" with "isotropic-constants".
- Work in progress towards plastic beam elements.
- Property specific struct.XXX FISH intrinsics have been removed, and replaced with the more general struct.prop and struct.prop.index functions.
- When persist is off register the contacts each time you compute fragments.
- Ongoing documentation improvements
- FLAC3D Zone-based pore-pressure will initialize based on gridpoint pore-pressure.
- FLAC3D Added new fluid commands PERMEABILITY-SATURATION and SATURATION-SUCTION.
- FLAC3D Added plots of apparent saturation, permeability ratio, and fluid head.
- FLAC3D Added FISH intrinsic gp.fluid.head.
- 3DEC Added range output to BLOCK CONTACT MATERIAL-TABLE LIST command.
- 3DEC Added FLOWZONE-NEW to BLOCK ZONE GENERATE and BLOCK ZONE GENERATE-NEW. This uses a new triangulation scheme for creating flow zones.
- PFC Added new contact model "subspringnetwork".
- PFC Rigid block (RBLOCK) additions:
- Added combined damping for rigid blocks.
- Added support for setting contact gaps consistent with stress and strength for rigid blocks.
- See the INSTALL-GAPS command.
Bug Fixes
- Fix fragment logic crash when no fragments have been computed.
- Fix bug in geometry node/edge/polygon FISH extra assignment.
- Fix memory use issue in DFN logic.
- Increased speed of project file loading when many editor files are present.
- Fix plot of applied pressure on shells and liners.
- Fix structural element resultant histories. NOTE: Much work is needed here, the current implementation is very inefficient and will needlessly slow down cycling.
- Fix error during save/restore of large amounts of Python data.
- FLAC3D Adjust tolerances used in ZONE INITIALIZE-STRESSES for very small zone sizes.
- FLAC3D Fix bug in zone histories using a gridpoint location that could lock up the code.
- FLAC3D Fix a save file compatibility error restoring v700 gridpoint apply conditions.
- FLAC3D JOINTS Fix intersection testing for overlapping convex polygons.
- FLAC3D JOINTS Fix bug if transitioning from one method of clipping to another.
- 3DEC Fix bug in plotting block fixity.
- 3DEC Fix bug related to joint set IDs when cutting voronoi blocks.
- PFC Fix bug when assigning groups to rblocks.
- PFC Fix cell space remapping issue when rblocks cross periodic space boundaries.
- PFC Fix a bug when querying a clump template made of rblocks or balls.
- PFC Fix the FACET-TOTAL command on rblocks to be active unless the IGNORE-WHILE-CYCLING keyword is given.
- PFC Fix a bug in the rblock/rblock contact position determination.
- PFC Fix a bug when importing walls using a non-manifold skin.
New features and improvements
- Ongoing updates to FLAC2D documentation.
- Structural element logic update
- Replace beam/pile property moi-plastic with torsion-constant
- (see documentation Beam-Type Structural Elements:Beam-Type Properties).
- Remove pile fish functions that are already provided by beam fish functions. Note that the beam fish functions operate upon either a beam or a pile element.
- Added history of structural node acceleration.
- Contour legend improvements:
- The default number of contour labels has been reduced.
- The default number number of significant digits has been reduced.
- The format and precision of the output can be specified.
- Added option to swap axes for table and profile charts.
- Runtime support for security dongles was updates.
- Updated Creep option for COMBA model.
- Some model IMASS properties have been removed from the read-only list.
- Added a FLAG-BRITTLE property to the PLASTIC-HARDENING model.
- Some optimizations added to the the PLASTIC-HARDENDING model.
- FLAC Added characteristic displacement property. When shear displacement reaches this limit dilation goes to zero.
- FLAC Added flag to turn off Maxwell damping when yielding is occuring.
- FLAC Renamed the EXTRUDER to SKETCH.
- FLAC Added CONFIG CLUSTER compatibility checks.
- FLAC Plot Query of a face includes face area.
- 3DEC Improved factor-of-safety support for joint models.
- 3DEC Added RANGE JMODEL.
- 3DEC Added FISH access to finite element gauss point data.
- 3DEC Fix block history creation if slightly outside the model.
- 3DEC Added BLOCK.SUBCONTACT.PARTNER FISH intrinsic.
- 3DEC Added some warnings if BLOCK FACE APPLY does not apply any boundary conditions.
- 3DEC Improved label of plot fixity plot to show direction.
- 3DEC BLOCK TO-FLAC3D now working for BLOCK CONTACT JOIN-BY-CONTACT ON.
- 3DEC Added ability to color by fixity/attach for hybrid bolts.
Bug Fixes:
- Fix to the state indicators for constitutive models cysoil, doubley, hoekbrownpac, softsoil, and soilcrrep.
- Fix a crash when importing geomety data with only edges but no polygons.
- Fix applied force on null zone face.
- Remove extra legend entry on interface plot.
- Fix time check for web licenses.
- Fix changing an HL key from local to network and vice versa.
- FLAC Fix problem assigning density using Python set_prop.
- FLAC Fix problem with zone separation on Griddle meshes.
- FLAC Remove second color map attribute in interface plots.
- FLAC Adjust tolerance for free-field creation.
- FLAC Some interface calculations had multithreading turned off in error.
- FLAC Corrected Maxwell damping if dynamic multi-stepping is used.
- FLAC Fixed local grid-point appplied boundary direction calculation in certain orientations.
- PFC Fix bug recovering principal values of a null stress tensor in 2D.
- PFC Fix hybrid bolt force accumulation in rigid blocks.
- PFC Fix softbond and springnetwork contact models with dashpots and bonds.
- PFC Fix to dowel contour blocks.
- PFC Tolerance fix to rigid block applied stress.
- PFC Fix issue with clumps in bricks. Note there is a remaining known issue for clumps of rigid blocks.
- 3DEC Fix bug deleting blocks that have been excavated and filled.
- 3DEC Fix bug solving rigid blocks when not fixed in all degrees-of-freedom.
- 3DEC Fix bug in DFN intersection with geometry calculation.
- 3DEC Fix bug in BLOCK COPY command.
- 3DEC Fix bug in joint and subcontact plot commands.
- 3DEC Fix bug in adaptive cell space with merged blocks.
- 3DEC Fix bug in BLOCK FACE APPLY-REMOVE VELOCITY-NORMAL command.
New features and improvements
- Changes release version name to 9.00.
- Merged v700 changes.
- FLAC3D Added plastic shells --- see the PowerPoint slide set in the directory:
- Help:Examples...FLAC/Structure/Shell/VerifProblemsShell_DP/PlasticShells-Summary
- FLAC3D MPI tests pass on both Windows and Linux platforms.
- FLAC3D Fixed some inaccuracies in zone condition value and zone geom-test command.
- FLAC2D Ongoing work on 2D documentation.
- FLAC2D Modified stress mixing to more closely match FLAC classic.
- FLAC2D NMD mode on in 2D by default - some experimental changes to models that use both normal and NMD zones.\
- FLAC2D Added zone create2D command as a synonym to zone create.
Bug Fixes:
- History names show in a plot if they have a legend in the plot item.
- Fixed a number of small memory leaks and unlikely by possible data corruption paths.
New features and improvements
- Update to the latest HL/SL security libraries.
- FLAC3D Added tolerance keyword to the OCD solver.
- FLAC3D Added verification example to test anisotrop elasticity.
- FLAC3D Updated the PH model for better performance, and to allow shear and cap yielding at the same time.
- FLAC3D Ongoing improvements to nonlinear structural elements.
- FLAC2D Enabled and tests factor of safety calculations.
Bug Fixes:
- Fixed shutdown crash
- A number of small memory bug fixes, hopefully improving reliability.
- FLAC3D Fixed error calculating stable timestep in improved implicit solver.
- FLAC3D Fixed issue with the preserve option in the improved implicit solver.
New features and improvements
- Shell structure plot items now support general properties.
- The comba concrete model has been updated and documented.
Bug Fixes:
- Fix code lock that could occur changing the active slot in the UI for the Group range element.
- Fix Von Mises constitutitive model state output.
Major improvements:*
- Updated security logic so that:
- All license types (local, network, and web) now allow two instances per license on the same computer.
- More than one license type can be active at a time, and the code will look for licneses in all active types.
- Node locked network licenses are now fully supported. These include the ability to check out (detach) a license from the network server to a local computer.
- Updated with latest version of runtime and drivers, compatible with Windows 11.
- Full HL and SuperPro key drivers and runtimes are now installed automatically, including all necessary components to support a network server for both HL/SL and SuperPro keys. This is included with the ICGTools install.
New features and improvements:
- Includes improvements from v700 versions as of 10/25/2021.
- Ongoing improvements to the plastic SEL implementation. Still not fully complete and documented.
- The Soft-Soil model has a flag-brittle property added.
Bug Fixes:
- Includes bug fixes from v700 versions as of 10/25/2021.
- Fixed bug in timestep determination for long thin rigid blocks.
- Fix int/max principal stress issue in 2D if maximum principal stress is positive.
- Fix creep time step configuration issue that caused input minimum time step to be ignored.
- Fix computation of stress quantities (von-mises, max-shear, octahedral) in 3DEC.
New features and improvements:
- Ongoing documentation improvements.
- Ongoing work on plastic structural element response.
- Removed tension-n and tension-p states from the von-mises model to avoid confusion.
- Adopted new build tools, which provides a 24% increase in speed on the standard FLAC3D speed test on computers with a large number of cores. More testing is needed to determine the performance benefit (if any) on real problems.
- FLAC3D Implemented the Ramberg-Osgood hysteretic damping model.
Bug Fixes:
- MassFlow Fix error when plotting marker properties.
New features and improvements:
- Added thermal expansion to plastic shells, and revised property keyword for von Mises model.
- Implemented plane-stress strain-softening model for non-linear structural element use.
- Minor fix to hybrid bolt logic.
- FLAC3D Extruder added block shading mode.
- FLAC3D Extruder added icon/tooltop next to edge properties to indicate a changed value.
- FLAC3D Extruder improved grid snapping behavior.
- FLAC3D Extruder the extrude section command will auto-split edges on a section when they intersect with existing edges.
- FLAC3D Modified opening dialog, added show grid option instead of auto expand.
- FLAC3D Added concrete model, documentation, and example.
- FLAC3D Added MPI command and FISH documentation. MPI prototype is now complete, but still needs Linux version and cloud support to be useful.
Bug Fixes
- FLAC3D Extruder fixed grid extent not updating correctly.
- FLAC3D Extruder the next edge starts from the second point of the previous edge in polyine mode.
- FLAC3D Extruder fixed program crashes when creating a new extruder page after closing all of them.
- FLAC3D Extruder extruder immediately responds to grid on/off changes.
New features and improvements:
- Ongoing documentation improvements.
- Update security logic.
- Add ability to turn off dominance identification with contacts with the DFN range element.
- Add a property "for-structure-type" for manually created links.
- 3DEC Add sel node mass-multiplier command.
- 3DEC Improve block zone generate-new. Add a possibility to specify the zone size near a location on a block face or a block edge with 'isolated-point'.
- 3DEC Add block.fragment and block.gp.near.list FISH functions.
- 3DEC Add nonlinear shear stiffness to nonlinear joint constitutive model.
- PFC Add method to get zone faces with a group in a specified slot for the skinning with wall-zone contacts.
- PFC Allow strength to be set regardless of gap in Mohr model.
Bug Fixes:
- Fix crash when trying to relax zones not assigned any constitutive model.
- Fix when inputting zero tension strength for piles.
- Fix compression/decompression issues.
- Fix cHRM chunk does not match sRGB.
- FLAC3D Update zone separation during interface creation. Allow keyword clear-attach when specifying new-side-group.
- 3DEC Fix non-convex block in block generate from-topography.
- 3DEC Fix in joint plotting for very small models.
- 3DEC Fix bug in dynamic rigid block analysis where timestep is manually changed.
- 3DEC Fix block generate-new example in the Problem Solving section of the manual.
- 3DEC Fix bug in non-linear joint model and continuously yielding joint model (bug is related to calculating stable timestep).
- PFC Fix some issues with the creation of vertex-facet contacts.
- PFC Fix the shear table behavior and the healing. Add a new sn_state for healing.
- PFC Fix shear stress plotting.
- PFC Fix sn_tau and sn_sigma properties.
- PFC Fix behavior of PlotItemClumpTemplateValue to not modify the list of displayed (checked) items when templates are added to the system.