UDM Library

Itasca is pleased to provide a collection of selected User Defined constitutive Models (UDM) for Itasca software (FLAC, FLAC3D, UDEC, 3DEC, and PFC). The usage of the UDMs available at this site is free of charge. However, the C++ UDM option for the corresponding Itasca software product, available for purchase, is required.

Itasca clients interested in contributing their own UDMs are invited to submit them.

Please note that the UDMs are provided for your convenience, as is, and Itasca takes no responsibility for the correctness or your usage of the UDMs.

Software
Category
Search Phrase
Model Name Version Category Software
Fracture Energy Softening Model 1 Concrete 3DEC
CycLiq 1 Sand FLAC3D
Dafalais-Manzari 3.2 Sand FLAC3D
Hill Contact Model 4 Backfill PFC
Beam Contact Model 1 Backfill PFC
Wang2D 1 Sand FLAC
PM4Silt 1.0 Low-Plasticity Silt and Clay FLAC
NTUA-Sand 2 Sand FLAC
FLAC3D
PM4Sand 3.1 Sand FLAC
MODHB 06/14/2012 Backfill FLAC3D
JointedRock 10/15/2012 Jointed Rock FLAC3D
Dames & Moore 06/12/2013 Sand FLAC3D
UBCHYST 5d Sand FLAC
UBCSAND 904aR Sand FLAC
Latest News
  • Webinar: Using Rigid Blocks in PFC This webinar will provide a brief overview of PFC modeling using convex rigid blocks, including...
    Read More
  • Remote Trainings Planned for 2021 Itasca Consulting Group is planning remote, online training for early 2021....
    Read More
  • 3DEC 7 is officially released! Enhanced user interface with new automated block and zone generation tools, and new structural elements....
    Read More

Upcoming Events
2 Nov
JNGG 2020 Lyon
The 10th National Days of Geotechnics and Engineering Geology are co-organized by the GeoMaS laboratory of INSA Lyon, ENTPE and Cerema ... Read More
2 Feb
Presented by Dr. Richard Armstrong in collaboration with Itasca Consulting Group.
Presented by Dr. Richard Armstrong in collaboration with Itasca Consulting Group. This hands-on, virtual training course is 16 hours to... Read More
6 Sep
AFTES 2021 - Underground, a space for innovation
The central theme of this edition is “the underground, a space of innovation”.... Read More