and More ....

  • Elastic finite element (FE) blocks (20 or 28-noded hexahedra), previously an option, are now included in the standard license. FE blocks have been widely used in the study of concrete arch dams as they can accurately and effectively represent the bending forms with quadratic functions for displacements interpolation (after Lemos et al., 2008*).
Zoned dam model with a fault cut into the right abutment prior to dam loading.
Displacements in rock and dam.
Import input into the wizard
Original input records, amplitude spectrum and filter
Filtered input records, amplitude spectrum
Waveform before baseline correction
Waveform after baseline correction
Save processed velocity in a table
  • Groups and extra variables are now available for all objects, including structural elements and flow planes.
  • Save files can be automatically (optionally) compressed for smaller file sizes.
  • Save files will be compatible with future 3DEC versions.
  • Defining groups using visual- and property-based ranges has been updated.
  • Block zone data can now be exported to a Visualization ToolKit (VTK) file format for use in ParaView, a powerful, open-source, multi-platform data analysis and visualization application. By default, stresses, groups, and displacements are exported; however, other data may also be included.
  • Isolated Rigid Body Analysis:
    • Excavation block stability can now be evaluated considering an “isolated rigid body” analysis using the BLOCK ANALYZE-STABILITY command.
    • Block stability is evaluated by calculating a factor of safety on the block faces.
    • The method evaluates the stability of a single 3D rigid block of any shape located at the surface of an underground excavation. The block is “isolated”, meaning it is analyzed as if it exists alone in the rock mass; the presence of other potential blocks is ignored. The block moves as a rigid body (in translation and rotation) and interacts with the surrounding continuous rock mass via joint elements. Initially, before excavation, the block is subjected to initial stresses applied on all of its faces. The approach consists of calculating the block movement and stress variation on faces due to the release of stresses on the excavation faces from the excavation process.
    • The method gives theoretically the same solution as an equivalent 3DEC simulation of an excavation with only one rigid block located at the free surface. However, it is more straightforward, as only the block geometry, joint properties, and stress data are needed.

*Lemos, José, Sérgio, Oliveira, and Paulo, Mendes (2008). Analysis of The Dynamic Behaviour of Cabril Dam Considering the Influence of Contraction Joints. EURODYN 2008, 7th European Conference on Structural Dynamics, 7 - 9 July, 2008, Southampton, E255, 8 pages:

Latest News
  • Workshop: The “Big Five”: Numerical Modeling of Cave Mining This MassMin2020 workshop will review caveability, ground subsidence, infrastructure stability, fragmentation, and gravity flow associated...
    Read More
  • 2020 H. Bolton Seed Lecture: Open Issues about Soil Liquefaction Dr. Bruce L. Kutter delivered the 2020 H. Bolton Seed Lecture at Geo-Congress 2020 in...
    Read More
  • Webinar: Using Rigid Blocks in PFC This webinar will provide a brief overview of PFC modeling using convex rigid blocks, including...
    Read More

Upcoming Events
4 Dec
Analyses of Embankment Dams and Slopes Using FLAC
Presented by Dr. Richard Armstrong in collaboration with Itasca Consulting Group. This hands-on, virtual training course is 16 hours to... Read More
8 Mar
FLAC3D 2021 Remote Introductory Training
Three days of general feature training addressing basic concepts and recommended procedures for geotechnical numerical analysis.... Read More
22 Mar
3DEC and UDEC 2021 Remote Introductory Training
An introduction to UDEC and 3DEC for application to geotechnical analysis.... Read More