PLAXIS Geotechnical Analysis

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Bentley Software Downloads

PLAXIS 2D CONNECT Edition V22 and PLAXIS 3D CONNECT Edition V22 can be downloaded via the Bentley Software Downloads pages: https://softwaredownloads.bentley.com/

Direct links

PLAXIS 2D
CONNECT Edition V22

PLAXIS 3D
CONNECT Edition V22

The sections below will highlight the notable changes and advantages that these releases will bring to users.

Release compatibility when upgrading from V21

Since PLAXIS V22 Update 1 also contains the new data structure of the
material database and the more flexible and more robust way of handling
project units introduced in the previous release, similar precautions
apply with respect to V21 release compatibility. PLAXIS V22 Update 1
will be installed alongside PLAXIS V21, instead of overwriting it.
Calculated V21 projects opened with this latest release will
automatically be saved as a converted copy with the _converted suffix.
After the conversion, remeshing and recalculation are required. In this
case, the original V21 project will remain unchanged. For V21 projects
that only have their geometry and/or some material sets defined and may
be either meshed or not, these projects will be opened by V22 Update 1
without converting to a saved copy. The original V21 project would be
overwritten upon saving.

The known issue that caused the assignment of the material factor labels
to the material models parameters to be lost, when a V21 project
containing Design Approaches is opened with V22 is now fixed in the
latest release.

Note that these converted projects are stored in the file format for
PLAXIS V22 Update 1, this means that earlier versions of PLAXIS will not
be able to open the converted project files. To continue using V21,
users can just open the original V21 project.

Discontinuity element

Rock is not a homogeneous material: the presence of faults, fractures,
joints, and weakness planes influence the mechanical behaviour, often
more than the properties of the rock material itself.

In PLAXIS, constitutive models such as Jointed Rock and Hoek-Brown
capture the behavior of small, smeared discontinuities, while the larger
explicit discontinuities have traditionally been modeled through
Interface elements. The new Discontinuity element, initially introduced
for PLAXIS 2D in Version 22, enables a simpler modeling workflow. This
element is now also made available for PLAXIS 3D in V22 Update 1.

Discontinuity elements simulate the localized effects of discontinuities
in rock, including opening/closing and sliding. Discontinuities
decouple the nodes in the mesh, enabling the relative displacement
between the two faces of the opening, which are linked by a set of
independent springs for which normal (kn) and shear (ks) stiffnesses can
be specified. The mechanical properties of Discontinuities are defined
through their own material sets, instead of depending on the surrounding
material, which makes them easier to use and to port from project to
project.

Discontinuities in PLAXIS 3D

CAD Improvement – importing polycurves as polygons

In PLAXIS 2D, geometry from CAD files is typically imported the same way
as it is defined in the CAD file. This means that polylines, whether
closed or open, will normally be imported as polylines and lines as
lines etc. However, in CAD drawings the closed polylines usually
represent soil/rock clusters or structures like quay walls etc. and
users will expect these to be recognized by PLAXIS as
soil/rock/structure polygons. This goes very well when users assigned so
called Regions or Boundaries to their CAD drawing before exporting it
from their drawing tool.

However not every software, for example Leapfrog, supports the creation
of Regions or Boundaries, therefore importing CAD drawings that contain
closed polylines into PLAXIS 2D would sometimes require the user to
manually trace the imported polylines to create polygons.

In this latest release the interoperability with CAD packages becomes
much easier and more robust better by introducing the “Import closed
polylines as polygons” option in the import window. When activating this
option in the import window, the GUI will show all the polygons that
will be created and once accepted, the only thing left to do for the
user is to assign the materials to the automatically created soil/rock
polygons.

Design Approaches – Side panel warnings and improved validation checks

Design Approaches feedback details in PLAXIS 2D

When editing soil materials in the Materials window, the side panel will
now give warnings and errors about potentially invalid parameter
combinations when combined with a created Design Approach and its
applied material factors. In addition, the validatecommand has been
extended to include the feedback for the potentially invalid parameter
combinations when combined with a created Design Approach.

Design Approaches command feedback details in PLAXIS 2D

The pre-calculation checks have also been improved and now give a better
indication of the phase, material and the Design Approach that cause an
invalid material set that blocks the calculation. This information is
also available through scripting (validate and
checkcalculationconditions) allowing users to ensure their applied
Design Approaches are valid when generating models through scripts,
before launching the calculation.

Calculation warnings on Design Approaches in PLAXIS 2D

Command for Cross-section results

When creating a line or planar cross-section in PLAXIS 2D or 3D, all the
results for the created cross-section are stored in tables accessible
through the GUI, but for scripting these results were not available.
Users had to manually loop over coordinates that would outline a
cross-section to retrieve the relevant result. With the new
getcrosssectionresults command it’s much easier, as users can now
directly retrieve results from created cross-sections and access the
results that are stored in the cross-section table.

Using the new getcrosssectionresults command in PLAXIS Output

In this release, we fixed some critical issues from PLAXIS CONNECT Edition Version 22.00:

– Solved: PLAXIS Design Approach partial factor not applied to material parameters when loading older files

– Solved: Fixed an issue in the calculation manager that prevented proper saving of the files when the calculation was finished

– Solved: Staged construction information on the embedded beam
connection was not always correct. To avoid confusion, the information
is currently hidden, and should be reviewed in structures mode.

– Solved: Some Output results may not consider project units in PLAXIS CONNECT Edition V22.00

PLAXIS 2Dis a powerful and user
friendly finite element package intended for two-dimensional analysis of
deformation and stability in geotechnical engineering and rock
mechanics. PLAXIS is used worldwide by top engineering companies and
institutions in the civil and geotechnical engineering industry.
Applications range from excavations, embankment and foundations to
tunnelling, mining and reservoir geomechanics.

PLAXIS is equipped with a broad range of advanced features to model a
diverse range of geotechnical problems, all from within a single
integrated software package.

PLAXIS uses predefined structural elements and loading types in a
CAD-like environment. This empowers the user with fast and efficient
model creation, allowing more time to interpret the results.

PLAXIS 2D Showreel – Dams & Embankments

PLAXIS 3Dis a powerful and user
friendly finite element package intended for three-dimensional analysis
of deformation and stability in geotechnical engineering and rock
mechanics. PLAXIS is used worldwide by top engineering companies and
institutions in the civil and geotechnical engineering industry.
Applications range from excavations, embankments and foundations to
tunnelling, mining and reservoir geomechanics.

PLAXIS 3D has advanced features to tackle modelling challenges in the
most complex geotechnical projects, that cannot be solved with PLAXIS
2D.

Finite element modelling in full 3D has never been easier with a range
of CAD-like drawing tools and extrude, intersect, combine and array
operations. It’s almost like sculpting.

In this showreel, we display some models of dams and embankments made in PLAXIS 3D.

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development company that supports the professional needs of those
responsible for creating and managing the world’s infrastructure.