Mesh refinement is based on the relative error of the governing equation and therefore automatically locates critical zones. Mesh refinement may be specified to follow any particular variable in the problem. In a transient analysis a different mesh is generated for each time step.

Input stress or displacement boundary conditions as constants or free-form equations

Initial conditions may be imported from a previous analysis; the OCR of a previous analysis may be specified to determine the initial preconsolidation pressure of the current analysis, and any variable from a previous analysis may be specified as an initial condition for the next analysis

Finite element analysis by the Galerkin method - the solver uses advanced features such as preconditioning of the convergence matrix as well as staging and automatic mesh refinement to achieve solutions with greater stability than any other software currently available

Solver runs on Red Hat Linux or Windows, with support for hyper-threading and multiple processors

Anisotropic analysis at any angle in two or three dimensions

Axisymmetric analysis

Use of Skempton's A and B parameters to compute pore-water pressure build-up

MODEL DESIGN FEATURES

CAD style entry of geometry based on AutoCAD™

Grid, snapping, and object snapping features available

Zooming, panning features available

Model built as stacked surfaces; Each surface may be imported from Surfer or any XYZ data text file

Models stored in XML format for speed and easy data transfer

Each surface may have multiple regions defined - Regions are extruded between the surfaces on which they are placed

Automaticpinching out of intersecting soil layers or grids. Overlapping grids can also be handled by specifying which grid is the domainant grid. They can also be specified to allow a minimum thickness between grids.

Import AutoCAD™ .dxf geometry and incorporate it directly into the model - node points are automatically aligned with line segment end points

Graphically assigned boundary conditions

Free, fixed, displacement constant or expression, force constant or expression, or water boundary conditions may be specified; free form equations may be specified as a function of position (i.e. d=0.5+log(x)*0.1)

Problems may be entered in Metric or Imperial units

Initial water table may be graphically drawn on the problem or imported from an SVFlux™ analysis

Problem geometry may be imported from existing problems

Existing problems may be saved under a new name in the database to allow quick generation of multiple scenarios

Colors or patterns of soil regions may be specified

Manual entry of region coordinate points

Lines (extruded into walls) may be added to model to force mesh refinement along a linear object

Internal boundary conditions may be set or node density specified along internal line objects

Sketch text or lines may be added to the model design

Graphical model design may be exported as a WMF or DXF file and/or printed

Bitmap or DXF geometry may be imported and layered behind model geometry to simplify model creation

OUTPUT FEATURES

Color visualization of the result mesh is available via our powerful AcuMesh™ visualization software

Transparency allows visualization of three-dimensional internal mesh and/or isosurfaces

Cutaways allow user to view internal sections of the model

Color contour plots of any problem variable may be placed on any face of the model; custom color shadings may be specified

Color contour plots of all relevant variables

Isosurfaces may be plotted for three-dimensional models

Two- or three-dimensional vector plots of stress or deformation components are available

Plots may be zoomed to isolate any region of interest

Cross plots of stress or deformation components are available

Plots of Mohr's circle at any finite element node are available

Volume integrals may be computed over the entire problem or any particular region of interest

Mesh plots track mesh refinement

Plots of value versus time may be generated at any coordinate for all relevant variables

Surface plots of any two-dimensional variable over the problem region may be produced

Overlaying of plots may be performed - for example, vectors may be shown in Region 1 while contours of head may be shown in Region 2

Text and line art may be added to output

Graphical output may be exported to WMF, DXF, JPG, or BMP formats