Nonlinear Finite Element Analysis
geotechnical group has developed an extensive suite of software for
performing elastoplastic finite element analysis, and this is
continually being expanded.
SNAC incorporates a wide range of elastoplastic soil models, including those belonging to the critical state family, and has advanced algorithms for stress integration, load stepping, and time stepping (in consolidation analysis). All of these procedures are implemented with automatic error control and are able to provide accurate solutions for highly nonlinear soil models. SNAC also incorporates a sophisticated macro language that permits users to design their own solution algorithms. This feature is valuable in research environments, where standard methods do not always work. This area is a particular research focus of Scott Sloan, Daichao Sheng and Andrew Abbo.