UBCHYST

Description

The model is a relatively simple, total stress model, developed at the University of British Columbia for dynamic analyses of soil subjected to earthquake loading, intended to be used with undrained strength parameters in low permeability clayey and silty soils, in highly permeable granular soils, where excess pore water would dissipate as generated, or in non-saturated granular soils. Its characteristics include reduction in secant modulus with strain, emulation of marching or ratcheting to occur when there is a static shear bias, and the option of allowing a permanent modulus reduction as a function of maximum past shear stress ratio.

Keywords

  • liquefaction
  • plastic
  • total stress

References

Byrne, P.M. and Naesgaard, E., 2010. Personal Communications.

UBCHYST

UDM Version: 5d
Release Date: Mar 8, 2016

Category: Sand

Software: Download: Contact: Developer:

Latest News
  • Itasca Software now Available for Linux Version 7 or greater of Itasca software (FLAC3D, 3DEC, PFC3D, and PFC2D) are now operable...
    Read More
  • Model Plot Contest Winners Itasca is pleased to announce the winners and honorary mentions of our Model Plot Contest...
    Read More
  • Got Old Software? Itasca's latest versions offer many new features and are optimized to run faster on today's...
    Read More

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
21 Mar
FLAC3D 2022 Online, Live Introductory Training
This "hands-on" course includes Basic Concepts and Recommended Procedures for Geotechnical Numerical Analysis. A more focused fourth da... Read More
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