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
HZCrush contact model 1 Sand PFC
Edinburgh-Elasto-Plastic-Adhesive (EEPA) contact model 1 Soil PFC
Johnson-Kendall-Roberts (JKR) Contact Model 1 Soil PFC
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
UBCSAND 904aR Sand FLAC
UBCHYST 5d Sand FLAC
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Upcoming Events
7 Mar
FLAC 2022 Online, Live Introductory Training
FLAC is numerical modeling software for advanced geotechnical analysis of soil, rock, groundwater, and ground support in two dimensions... Read More
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4 Apr
PFC 2022 Online, Live Introductory Training
This four-day course provides guidance in the use of the PFC2D and PFC3D to simulate the mechanical behavior of granular and solid mate... Read More