News Article

Introducing Our New IMASS Constitutive Model

The Itasca Constitutive Model for Advanced Strain Softening (IMASS) has been developed to represent the rock mass response to excavation induced stress changes.

IMASS uniquely utilizes two softening (or residual) yield envelopes to represent the damage around an excavation, slope, or caving process by accounting for the progressive failure and disintegration of the rock mass from intact, jointed, and/or veined rock to a disaggregated, bulked material.

Now Available as an Option

IMASS is available as an optional constitutive model for use in both FLAC3D and 3DEC (version 7.0 or latter) and is and is sold as a monthly or annual lease.

LEARN MORE

FLAC3D block cave model using a coupled IMASS ReBop approach. The predicted flow, yield, and air gap zones are indicated.
FLAC3D model using IMASS showing the degree of damage (strength loss) in the the main galleries after 32 months of nearby mining.
FLAC3D block cave model using a coupled IMASS CAVESIM approach with the degree of rock mass damage indicated.
Latest News
  • Introducing Our New IMASS Constitutive Model The Itasca Constitutive Model for Advanced Strain Softening (IMASS) has been developed to represent the...
    Read More
  • Itasca Symposium 2020 - Registration Now Open! Registration is now open for the Fifth International Itasca Symposium....
    Read More
  • 2019 Sloan Outstanding Paper Award Dr. Mojtaba Bahaaddini (Shahid Bahonar University of Kerman), along with Associate Professor Glenn Sharrock (Itasca/UQ),...
    Read More

Upcoming Events
19 Jan
Evaluation of impacts of lahars on structures using DEM numerical modelling
Lahars represent natural phenomena that can generate severe damage in densely populated urban areas. The evaluation of pressures genera... Read More
21 Jan
Griddle Version 2.0 has been Released | Learn What's New
Griddle 2.0 Has Been Released! Join us for a webinar on "What's New in Griddle 2.0?"... Read More
8 Mar
FLAC3D 2021 Online, Live Introductory Training
... Read More