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 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
  • We’re Hiring! Hydrogeologists, geochemists, environmental engineers, and geoscientists....
    Read More
  • Itasca Software now Available for Linux Version 7 or greater of Itasca software (FLAC3D, 3DEC, PFC3D, and PFC2D) are now operable...
    Read More
  • Itasca Celebrates 40 Years Itasca is celebrating 40 years of solving geomechanical and hydrogeological challenges through engineering and computer...
    Read More

Upcoming Events
13 Mar
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
16 Mar
Online Live Training : Python in Itasca Software
This course provides an overview of the Python programming language in Itasca software. The course covers major applications of Python ... Read More
27 Mar
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