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
Coupled Elastic-Softening Joint Model 1 Concrete 3DEC
UBCHYST 2002 Sand FLAC2D
PM4Silt 2.1 Low-Plasticity Silt and Clay FLAC2D
PM4Sand 3.3 Sand FLAC2D
Dafalais-Manzari 4.0 Sand FLAC3D
Fracture Energy Softening Model v7 1 Concrete 3DEC
Edinburgh-Elasto-Plastic-Adhesive (EEPA) contact model 1 Soil PFC
HZCrush contact model 1 Sand PFC
Johnson-Kendall-Roberts (JKR) Contact Model 1 Soil PFC
Fracture Energy Softening Model 1 Concrete 3DEC
Hill Contact Model 4 Backfill PFC
Beam Contact Model 1 Backfill PFC
Wang2D 1 Sand FLAC2D
UBCSAND 904aR Sand FLAC2D
Latest News
  • 3DEC 9 Officially Released ITASCA announces the release of 3DEC v9, an advanced three-dimensional, hybrid discontinuum and continuum modeling...
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  • A Big Hand of Applause for Our 2023 Summer Interns ITASCA Minneapolis would like to extend our sincerest thanks to our 2023 summer interns for...
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  • Itasca has announced the release of FLAC2D v9 Itasca has announced the release of FLAC2D v9, revolutionizing the way we analyze and predict...
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Upcoming Events
13 Mar
Getting Started with 3DEC
Objectives of the training: Understand the 3DEC numerical approach and the types of problems it can solveKnow how to manipulate the 3DE... Read More
8 Apr
3DEC In-Person Introductory Course
Live in-person introductory training course in Minneapolis, Minnesota. This course provides an overview of the capabilities and feature... Read More
15 Apr
FLAC3D In-Person Introductory Course
Live in-person introductory training course. This 3-day course provides general feature training addressing basic concepts and recommen... Read More