This section contains Tips and Tricks for PLAXIS 2D and PLAXIS 3D and answers to Frequently Asked Questions.

*PLAXIS 3D, command, curved tunnel, extrude, polycurve*

*PLAXIS 3D, color, colour, contour lines, output, results, shadings*

*32 bit, 64 bit, PLAXIS 2D, PLAXIS 3D, compile, udsm, user defined soil model*

*PLAXIS 2D, PLAXIS 3D, consolidation, drained, excess pore pressure, faq, undrained, undrained behaviour*

*PLAXIS 2D, PLAXIS 3D, apply, command line, commands, filter, groups, macro, map*

*PLAXIS 2D, PLAXIS 3D, command, command line, commands, commands runner, index, object name*

*PLAXIS 2D, PLAXIS 3D, command, commands, echo*

*PLAXIS 2D, cad, dwg, dxf, import*

*PLAXIS 3D, copy, export, geometry, import*

*PLAXIS 2D, PLAXIS 3D, calculating, calculation data, disk space, intermediate*

*PLAXIS 2D, PLAXIS 3D, codemeter, licence, licence error, license, network*

*PLAXIS 2D, PLAXIS 3D, codemeter, installation*

*PLAXIS 2D, PLAXIS 3D, codemeter, dongle, drive, server, usb*

*PLAXIS 2D, PLAXIS 3D, command line, commands, documentation, object, object name, objects, reference*

*PLAXIS 2D, compliant base boundaries, dynamic, dynamics, earthquake, free field boundaries, input signal*

*PLAXIS 2D, connection, embedded beam row, node-to-node anchor*

*PLAXIS 2D, PLAXIS 3D, consolidation, degree of consolidation*

*PLAXIS 2D, conversion, converting, error 4, project conversion*

*PLAXIS 2D, conversion, p2d, p2dx, plx, project conversion*

*PLAXIS 2D, array, copy*

*PLAXIS 2D, structural forces, tunnel*

*PLAXIS 3D, anchor, embedded beam, embedded pile, forepoling, line, lineangles, reinforcement, rockbolts, tunnel, tunnel designer, vector*

*PLAXIS 2D, PLAXIS 3D, anchor, chart, curve, fe anchor, node-to-node anchor*

It is possible for projects to have various loads being deactivated in a calculation phase. When checking PLAXIS Output results, it can happen that the visualization of the load is still visible even though the value of the load is set to zero. The load arrows may still be visible as the load is not yet fully deactivated, as ΣΜstage is not yet equal to one (1) and not all out-of-balance is solved for this calculation phase.

*PLAXIS 2D, PLAXIS 3D, line load, load, output, summstage, surface load*

*PLAXIS 2D, PLAXIS 3D, hb, hoek-brown, parameters, uni-axial compressive strength*

*PLAXIS 2D, bending moment, load, moment, pointload*

*PLAXIS 2D, PLAXIS 3D, acceleration, accelerogram, drift, dynamic, dynamics, earthquake*

*PLAXIS 2D, PLAXIS 3D, cap point, failure point, faq, hardening point, plastic point, tco point, tension cut-off point*

When you need to apply a time-dependent radial load in a Dynamics calculation, you need to set the same Dynamic Load Multiplier for the directions.

*PLAXIS 2D, PLAXIS 3D, distributed load, dynamic, dynamics, load, perpendicular*

Plaxis remote scripting is built using the HTTP protocol. With correct firewall settings and password renewals, attacks can be prevented.

*API, PLAXIS 2D, PLAXIS 3D, attack, password, server*

*PLAXIS 2D, PLAXIS 3D, end bearing, plate, plates, prevent punching, punching, tip resistance*

To save energy, Plaxis allows for an environmentally friendly (green) option to shut down your computer once all Plaxis calculations are finished: an option called gogreen. Read this article for the details.

*PLAXIS 2D, PLAXIS 3D, energy, energy saving, environmental, green, saving, shutdown*

*PLAXIS 3D, error, error code, error number, mesh, meshing*

*PLAXIS 2D, PLAXIS 3D, command, command file, commands runner, export*

With PLAXIS 3D CONNECT Edition V20 Update 2 it is possible to generate the mesh via the command line using a series of property – value pairs.

*PLAXIS 3D, command, command line, connect edition, mesh, swept*

*PLAXIS 2D, PLAXIS 3D, compliant base boundaries, dynamic, dynamics, earthquake, free field boundaries*

*PLAXIS 3D, boundary, boundary condition, boundary conditions, fixities, fixity, prescribed displacement*

*PLAXIS 2D, force, force envelope*

The mechanisms and the general aspects developed in pseudo-static analysis are explained in this article, along with simple examples.

*PLAXIS 2D, PLAXIS 3D, earthquake, pseudo static, pseudo-static, retaining wall, seismic, slope stability, stability*

*PLAXIS 2D, PLAXIS 3D, ati, ati amd, atioglxx, atioglxx.dll, gl error, graphics, graphics card, nvidia, opengl, opengl error*

*3ds, PLAXIS 3D, acis, brep, cad, dwg, dxf, import, importing, step, stp, surface, volume*

*PLAXIS 2D, PLAXIS 3D, dynamic, dynamics, external water pressure, pore pressure, pseudostatic, water load*

*PLAXIS 2D, PLAXIS 3D, displacement, displacements, reset*

*PLAXIS 2D, PLAXIS 3D, strain, volume strain, volumetric strain*

In PLAXIS 2D and 3D, providing that the dynamic module is available, a dynamic (i.e., time-dependent) load can be defined by assigning a dynamic multiplier to the dynamic component of a load. As detailed later, the dynamic component of a given load is independent of its static component.

*PLAXIS 2D, activate, dynamic, dynamics, earthquake, line load, multiplier, point load, prescribed displacement*

*PLAXIS 2D, PLAXIS 3D, borehole, dimensions, width*

*PLAXIS 2D, PLAXIS 3D, shear, shear strength, undrained, undrained behaviour*

With PLAXIS Output program a load-displacement curve can be generated. However, this is also possible with the help of the ΣMstage - displacement curve.

*PLAXIS 2D, PLAXIS 3D, curve, displacement, load*

In PLAXIS 2D and 3D, a dynamic displacement can be assigned to any cartesian component of a given prescribed displacement to define its evolution with time. As detailed below, the dynamic displacement is only prescribed to the model when both static and dynamic components of displacement are activated.

*PLAXIS 2D, accelerogram, boundary conditions, dynamic, dynamics, prescribed, prescribed displacement, time step*

*PLAXIS 2D, PLAXIS 3D, chart, curve, nodes, select*

In PLAXIS Input, the default behaviour is to store only the last calculation step of each phase. The option to set the Max number of steps stored can be found in Phases window, under the Numerical control parameters.

*PLAXIS 2D, PLAXIS 3D, phase, phases, step, steps*

For a dynamics analysis, the user can choose several boundary conditions: Viscous, Free field, tied degrees of freedom and no specific boundary (None). With the option Tied degrees of freedom, the calculation will connect the nodes at the left and right model boundaries such that the corresponding nodes will undergo exactly the same displacements. This option may be chosen to model e.g. a one-dimensional shear column in order to perform a site response analysis.

*1d, PLAXIS 2D, deconvolution, earthquake, soil column, tied degrees of freedom*

*PLAXIS 2D, PLAXIS 3D, command, command file, commands runner*

When you open a PLAXIS model and the program tells you you do not have the proper entitlements, you can fix this!

*connect edition, entitlement, geotechnical select entitlements, licence, license, subscription entitlement service, vip*

*PLAXIS 2D, mesh, meshing, stages*

*PLAXIS 2D, PLAXIS 3D, faq, force, fx, prescribed, prescribed displacement*

*PLAXIS 2D, advanced mode, degree of saturation, saturation*

Sometimes you want to see not only the final results of a single phase in a PLAXIS calculation, but you are also interested in the intermediate steps. Here you can see how.

*PLAXIS 2D, PLAXIS 3D, intermediate, maxstepsstored, output, phase, results, step, steps*

*PLAXIS 2D, conversion, converting, installation, multiple versions, plx*

*32 bit, 64 bit, PLAXIS 3D*

*32 bit, 64 bit, PLAXIS 3D, calculating, calculation, calculations, dualcore, multicore, pardiso, picos, quadcore, solver*

*PLAXIS 2D, distributed load, faq, load, perpendicular, tunnel, tunnel designer, tunnel lining, tunnels*

*PLAXIS 2D, PLAXIS 3D, arc-length, arc-length control, calculating, calculation, calculations, iterative settings*

*PLAXIS 3D, arc-length, arc-length control, iterative settings*

*PLAXIS 2D, PLAXIS 3D, calculating, calculation, calculations, desired maximum, desired minimum, iterative settings*

*PLAXIS 2D, PLAXIS 3D, binding, bound, codemeter, key, licence, licence error, license, machine*

*PLAXIS 2D*

*PLAXIS 2D, batch file, calculating, calculation, calculations, command, command file, commands*

*PLAXIS 2D, PLAXIS 3D, consolidation, load, self-weight, time, weight*

*PLAXIS 2D, PLAXIS 3D, input, local axes, local axis, output, plate, rgb*

*PLAXIS 2D, PLAXIS 3D, command, command line, commands runner, macro*

*PLAXIS 3D, bending, material set, materials, plate, sheet pile wall, sheet pile wall parameters*

*PLAXIS 2D, PLAXIS 3D, dynamic, dynamics, free field boundaries, memory, pm4sand, ram, ubc, ubc sand, ubcsand, udsm*

*PLAXIS 2D, PLAXIS 3D, flow parameters, groundwater flow, groundwaterflow, mesh, mesh alignment, unsaturated, unsaturated zone*

*8+3 filename, PLAXIS 2D, failure, mesh, meshing*

*PLAXIS 3D, helical pile, massive, micropile, pile, screw pile, secant pile, soldier pile, tapered*

*PLAXIS 2D, PLAXIS 3D, interface, node pairs, soil-structure, soil-structure interaction*

*PLAXIS 2D, PLAXIS 3D, modelling technique, under-pressure, underpressure, vacuum, vacuum consolidation*

*PLAXIS 3D, boundary condition, boundary conditions, displacement, fixities, fixity*

*32 bit, 64 bit, PLAXIS 2D, PLAXIS 3D, configuration, dualcore, multicore, quadcore, specification, specs*

*PLAXIS 2D, PLAXIS 3D, anchor, fe anchor, fixed end, node-to-node anchor*

*PLAXIS 2D, PLAXIS 3D, step, step number*

*PLAXIS 2D, PLAXIS 3D, command, command line, copy, copy+paste, object name*

*PLAXIS 2D, PLAXIS 3D, command, command line, commands, data, table, tabulate*

*PLAXIS 2D, PLAXIS 3D, drucker-prager, failure, failure criterion, lade, matsuoka-nakai, mohr-coulomb, tresca, von mises*

*PLAXIS 2D, PLAXIS 3D, boundary conditions, compliant base boundaries, dynamic, dynamics, earthquake, free field boundaries, tied degrees of freedom, viscous, viscous boundaries*

With fully permeable interfaces, the cross flow results are not shown. In the article, a workaround is shown to get these discharge values.

*PLAXIS 2D, PLAXIS 3D, conductivity, discharge, drainage conductivity, flow, hydraulic resistance, interface, leaking, new in 2d2017, new in 3d2017, permeability, results, semi-permeable*

*PLAXIS 2D, PLAXIS 3D, compatibility, output*

*PLAXIS 2D, command, command line, commands, commands runner, compatibility*

*PLAXIS 3D, compatibility, data, old version, specification*

*PLAXIS 3D, brep, changes, conversion, geometry, import, intersection, locking, parametric, parametric geometry, project conversion, tessellation, triangulation*

This page lists the changes in the commands for PLAXIS 3D and its parameters per version.

*PLAXIS 3D, command, command line, commands, commands runner, compatibility*

In PLAXIS 2D 2017 and 3D 2017, an improvement was made in structuring the properties for Phase/Step objects in PLAXIS Output program, e.g. for Python.

*API, PLAXIS 2D, PLAXIS 3D, command, command line, commands, commands runner, compatibility, output, phase, python, step*

*PLAXIS 2D, PLAXIS 3D, install, installation, silent*

Permeability in interfaces and the explanation of hydraulic properties of interfaces. New since 2D and 3D 2017.

*PLAXIS 2D, PLAXIS 3D, conductivity, drainage, drainage conductivity, fracture, hydraulic properties, hydraulic resistance, interface, joint, leaking, new in 2d2017, new in 3d2017, permeability, semi-permeable*

This article shows situations and considerations when modelling semi-permeable structures like retaining walls or tunnels using semi-permeable interfaces

*PLAXIS 2D, PLAXIS 3D, conductivity, discharge, drainage, hydraulic properties, hydraulic resistance, interface, leaking, new in 2d2017, new in 3d2017, permeability, semi-permeable*

*PLAXIS 2D, embedded pile, embedded pile row, helical pile, micropile, pile, pile-raft, piled raft, quay wall, screw pile, secant pile, soil-structure interaction, soldier pile*

*PLAXIS 2D, PLAXIS 3D, command, command line, soil, soil model, udsm, user defined soil model*

*PLAXIS 2D, PLAXIS 3D, dynamic, dynamics, earthquake, smc*

*PLAXIS 2D, embedded pile, embedded pile row, helical pile, installation, micropile, pile, pile row, pile-raft, piled raft, screw pile, secant pile, soldier pile*

*PLAXIS 2D, PLAXIS 3D, accuracy condition, mesh, mesh alignment, non-associated plasticity, non-uniqueness*

*PLAXIS 2D, PLAXIS 3D, codemeter, drivers*

In PLAXIS 2D and PLAXIS 3D a pseudo-static acceleration can be defined per phase. You can define the value per phase via the Model Conditions > PseudoStatic option in the Model Explorer.

*PLAXIS 2D, PLAXIS 3D, acceleration, gravity, pseudostatic*

*PLAXIS 2D, PLAXIS 3D, database, dataset, material set, materials*

*PLAXIS 2D, PLAXIS 3D, reduction, stiffness, strain*

*PLAXIS 2D, PLAXIS 3D, phases, previous phase, regenerate, reset, staged construction*

*PLAXIS 2D, PLAXIS 3D, batch file, calculate multiple, log file, multiple calculations*

When using the combination of a Safety analysis and updated mesh, the node locations will no longer be updated during this calculation. Why is this important? Read more for some examples.

*PLAXIS 2D, PLAXIS 3D, displacements, phi-c reduction, safety analysis, updated mesh, updated water pressures*

*PLAXIS 2D, PLAXIS 3D, deformation, deformations, displacements, phi-c reduction, safety analysis*

*PLAXIS 2D, PLAXIS 3D, factor of safety, safety analysis, undrained, undrained behaviour*

*PLAXIS 2D, factor of safety, phi-c reduction, safety analysis, summsf, target*

*PLAXIS 2D, PLAXIS 3D, compatibility, data, old version, older, specification*

*PLAXIS 2D, PLAXIS 3D, curve, curves, nodes, points for curves, select, stress points*

*PLAXIS 2D, PLAXIS 3D, curve, nodes, points for curves, post-calculation, pre-calculation*

PLAXIS Output offers the possibility using the command line to configure the plot settings in order to export a plot to a file for post-processing.

*PLAXIS 2D, PLAXIS 3D, export, output, plot, set*

*PLAXIS 2D, PLAXIS 3D, calculation, calculations, phases, recalculate*

Using the built-in command line options, we can create groups based on filtering criteria that enable us to see more details of our PLAXIS model. Some examples are given for 3D embedded beams.

*PLAXIS 2D, PLAXIS 3D, command, command line, commands, embedded beam, filter, groupfiltered, groups, length, material, pile-raft, rock bolts, tabulate*

*PLAXIS 2D, chain, chaining, selection, selection tool, shift*

*PLAXIS 2D, axi-symmetric, axisymmetric, faq, stiffness, structures*

Here we show a workaround for dealing with creep or external effect leading to overall stiffness reduction in structural elements in PLAXIS models

*PLAXIS 2D, PLAXIS 3D, corrosion, creep, reduction, rust, stiffness, structural, workaround*

*PLAXIS 2D, PLAXIS 3D, concrete, non-porous, nonporous, output, results, stress, stresses*

With the release of PLAXIS 3D CONNECT Edition V20 Update 2, the meshing procedure is enhanced with the new Swept meshing feature!

*PLAXIS 3D, connect edition, mesh, meshing, swept*

*PLAXIS 2D, PLAXIS 3D, interface, tension cut-off, udsm, user defined soil model*

*PLAXIS 2D, dynamic, dynamics, earthquake, iterative settings, substeps*

*PLAXIS 2D, extend, snap to object, snaplinear, trim*

*NATM, NATM tunnel, PLAXIS 3D, cutting planes, intersection, shield tunnel, tunnel, tunnel lining, tunnels*

*PLAXIS 2D, PLAXIS 3D, nodes, selecting, stress*

*PLAXIS 2D, PLAXIS 3D, interface, nodes, output, structures*

*PLAXIS 3D, groundwater, groundwater flow, groundwaterflow, well*

*API, PLAXIS 3D, cookbook, deformation, deformations, output, py cookbook, python, python cookbook, results, udpy, user-defined*

*API, PLAXIS 2D, PLAXIS 3D, boilerplate, python, remote scripting, rest http, scripting, wrapper*

*PLAXIS 2D, PLAXIS 3D, acceleration, accelerogram, dynamic, dynamics, earthquake*

When running a PLAXIS 3D model, the most interesting behaviour and results are usually all inside the 3D soil model. In this article, we will show you ways how to see inside the soil and understand the results better.

*PLAXIS 3D, filter, helper surface, hide, inside, iso-area, isosurface, output, partial geometry, presentation, results*

*PLAXIS 2D, flow conditions, phreatic level, water, water conditions, water level*

New features in PLAXIS 2D and PLAXIS 3D Hydrodynamic pressure in dynamic analysis: Westergaard's added mass is now available!

*PLAXIS 2D, PLAXIS 3D, added mass, dam, dynamic, dynamics, earthquake, generalized westergaard, hydrodynamic, water, westergaard*