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
Dafalias-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
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  • Workshop: The “Big Five”: Numerical Modeling of Cave Mining This MassMin2020 workshop will review caveability, ground subsidence, infrastructure stability, fragmentation, and gravity flow associated...
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Upcoming Events
1 Dec
WEBINAR: What’s New in 3DEC Version 7
This webinar is for people who have used 3DEC before and are interested in the latest developments.... Read More
4 Dec
Analyses of Embankment Dams and Slopes Using FLAC
This hands-on, virtual training course is 16 hours total, spread over four days in a 1.5-week period, and covers the analysis of embank... Read More
8 Mar
FLAC3D Remote Introductory Training - Online!
Three days of general feature training addressing basic concepts and recommended procedures for geotechnical numerical analysis.... Read More