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2026年5月13日 - 2026年5月13日
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FLAC
3D
6 0 Model Generation using the Building Blocks Handle
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Raiseborrning i svåra bergförhållanden - Litteratur och praktikfallsstudie
Graph-based flow modeling approach adapted to multiscale discrete-fracture-network models
Uppblockning, markdeformationer och inverkan av strukturer vid skivrasbrytning
2026年5月13日 - 2026年5月13日
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Itasca has announced the release of FLAC2D v9
6th Itasca Symposium on Applied Numerical Modeling
Software Products
What's New in
3DEC
7
Software
What's New in
3DEC
7
USER INTERFACE and PLOTTING
Updated plotting libraries. Faster and more stable, especially on Remote Desktop
New plotting paradigm. Select the object being plotted and then choose the color scheme or value to be contoured
Multi-threaded block plots (not done yet)
All quantities can now be contoured (e.g. stress and strain)
Most plot items include the ability to map to other coordinates and the ability to plot with exaggerated deformation
Select the object being plotted and then select either the label (group, material, material model, state, etc.) or value (displacements, stress, velocity, temperature, etc.) to be contoured.
Updated plotting libraries. Faster and more stable platform, especially when working with Remote Desktop
All quantities can now be contoured (e.g. stress and strain)
Most plot items include the ability to map to other coordinates and the ability to plot with exaggerated deformation to highlight large displacements in small strain models
Ability to reorder, copy, and paste plot items interactively
MODEL CONSTRUCTION
Automatic mesh generation in fully deformable blocks now uses same libraries as in
Griddle
Build models directly from closed geometry surfaces (e.g. DXF):
Fill volume with tetrahedral blocks, or
Merge blocks to form zones within single closed surfaces
Cut blocks with DXF geometry
Create blocks from VRML files
Built-in voronoi block generator
New grid file format for importing and exporting blocks and zones
Convert tetrahedral blocks into zones during import. Blocks with the same group name can be merged together to form multiple zones within a single block. 2-3x faster than joining. NEW
Beam, cable, and pile geometry can be imported from CAD data NEW
Define groups using visual and property-based ranges UPDATED
DXF of a simple tunnel (left) and resulting
3DEC
model (right). The model is composed of 4 blocks, each discretized into tetrahedral zones.
Create blocks from VRML files
Built-in voronoi block generator
Export model grids, along a plane, to
UDEC
New grid file format for importing and exporting blocks and zones
Convert tetrahedral blocks into zones during import
blocks with the same group name can be merged together to form multiple zones within a single block
2-3x faster than joining
Beam, cable, and pile geometry can be imported from CAD data
Define groups using visual and property-based ranges
JOINT MODELS
Three new, built-in joint models have been added:
Softening healing Mohr-Coulomb to improve modeling seismicity such that not all joint slip events are seismic and joint stick-slip behavior is possible
Bilinear Mohr-Coulomb with two different shear strength envelopes where the transition may be automatic (envelopes intersection) or specified
Power Law Creep to simulate the creep due to the joint gauge (infill) material
STRUCTURAL ELEMENTS
Structural liners, previously an option, are now included
More structural elements (piles, shells, and geogrids)
Elastic finite element blocks (20 or 28-noded hexahedra), previously an option, now included
Hybrid bolts add dowel segments to cable bolts to resist shearing and opening across joints
Cables around an excavated tunnel. Dowel segments are contoured by shear force.
UPDATED COMMANDS and SCRIPTING
Updated commands and
FISH
syntax that is intuitive, easy to learn, and easy to apply
Automatic conversion tool to translate
3DEC
5.2 data files to the updated
3DEC
7.0 syntax
Converted sources files are archived automatically to a local pre-conversion folder
Ambiguous or obsolete syntax is highlighted with recommendations
Original
3DEC
5.2 data file snippet (left) and automatically converted
3DEC
7.0 version (right). All converted source data files are automatically saved in pre-conversion folder (insert circle).
Documentation includes a Command and
FISH
mapping reference
Totally updated syntax for commands and
FISH
to make more intuitive and more consistent with other Itasca programs
Conversion tool to convert commands and
FISH
from old syntax to new syntax
Display of global
FISH
symbols as calculation progresses.
New variable types include: Boolean, Symmetric Tensor (e.g., stress and strain), Matrix (with built-in functions to inverse, multiply, etc.), Map (or associative array), and Structures
FISH
<strong>foreach</strong>
construct can now be used for
3DEC
objects. This greatly simplifies
3DEC
FISH
FISH
functions now available for all objects including structural elements
Improved editor with better highlighting, visible line numbers and code folding (collapse and expand segments of code)
Fully integrated Python. All
FISH
functions also available as Python methods
FISH
foreach
construct can now be used for
3DEC
objects. This greatly simplifies
3DEC
FISH
Looping through all zones in a model in
3DEC
5.2 (left) and
3DEC
7.0 (right).
FISH
functions now available for all objects including structural elements
Improved editor with better highlighting, visible line numbers and code folding (collapse and expand segments of code)
Fully integrated Python. All
FISH
functions also available as Python methods
Control
3DEC
entirely using Python data files and/or using the enhanced interactive
IPython
console built right into 3
DEC
IPython provides a powerful set of tools, such as:
GUI-based script shell
interactive data visualization
comprehensive object introspection
Python script parallel processing
robust error handling
MORE RESPONSIVE HELP
Documentation is now in HTML format
Access Help at the command prompt or within a data file [F1]
Access Inline Help [Ctrl + Spacebar] to auto-complete commands
AND MORE ...
Seismic wizard to pre-process ground waves for dynamic (option) analysis
Groups and extra variables for all objects, including structural elements and flow planes
Save files can be automatically (optionally) compressed
Save files will be compatible with future
3DEC
versions
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Releases
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Legacy Releases
Itasca Suite 7.0 Linux Update
Itasca has announced the release of
FLAC
2D
v9
Itasca has announced the release of
FLAC
2D
v9, revolutionizing the way we analyze and predict...
6th Itasca Symposium on Applied Numerical Modeling
The next Itasca Symposium will take place June 3 - 6, 2024, in Toronto, Canada....