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
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  • Computers and Geotechnics: Scott Sloan Best Paper Award for 2019 ...
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  • Introducing Our New IMASS Constitutive Model The Itasca Constitutive Model for Advanced Strain Softening (IMASS) has been developed to represent the...
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Upcoming Events
8 Mar
FLAC3D 2021 Online, Live 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 Online, Live Introductory Training
An introduction to UDEC and 3DEC for application to geotechnical analysis.... Read More
12 Apr
PFC 2021 Online, Live Introductory Training
PFC 2021 Online, Live Introductory Training... Read More