Prof. Pedro Arduino (University of Washington) discusses geotechnical modeling and provides examples.
The Open System for Earthquake Engineering Simulation (OpenSees) is a software framework for simulating the seismic response of structural and geotechnical systems.
A two day workshop on OpenSees was held at the Richmond Field Station, University of California-Berkeley on Aug15-16, 2012.
It was sponsored by nees@berkeley and PEER.
More information can be found at the following links:
OpenSees: opensees.berkeley.edu/wiki/index.php/Main_Page
nees@berkeley: nees.berkeley.edu
PEER: peer.berkeley.edu