AFENA

Category  Numerical analysis (soil) 
Publisher  University of Sydney 
Platform  DOS, Win95/98, WinNT 
Status  Commercial 
Description  AFENA is a finite element program that may be used for the solution of boundary and initial value problems. The program contains an element library and a variety of solution algorithms. Although it was designed specifically to solve problems in geotechnical engineering, it is also a general finite element program in the sense that it may be used to obtain numerical solutions to problems in solid mechanics, particular problems in fluid mechanics, coupled problems such as the analysis of soil consolidation and thermoelastic deformations, as well as other more general field problems. These applications may involve either one, two or three spatial dimensions as well as the time domain. It incorporates a macro instruction language which can be used to construct specific algorithms. A system of linear equations in the nodal variables is solved using a "skyline" solution technique. The system of equations may be either nonsymmetric or symmetric. Features: nonlinear material models such as ideal solids that obey either the MohrCoulomb or Tresca failure criteria and that deform plastically and may flow according to associated or nonassociated flow rules, fully drained, undrained and consolidation analyses of soils that are represented by the Modified Camclay model, the analysis of ubiquitously or discretely jointed rock masses, problems involving soil or rock bodies that are subjected to nonzero initial stresses prior to the application of further loading, and problems involving the removal or addition of material with self weight (i.e. excavation and fill problems). It has limited mesh generating facilities, but the included support software enhances the overall capabilities. The support programs are: GENTOP a twodimensional mesh generator for general plane shapes. The elements generated may be either 3, 6, 10 or 15 noded triangles, or 4 or 8 noded quadrilaterals. The generation of dual nodes for joint elements and special transition elements is also possible. FELPA a graphics pre and post processor can be used to check the mesh data for one and twodimensional problems and it also provides the facility for viewing the results of an analysis. It can produce a variety of plots including: the mesh geometry and boundary conditions, the nodal displacement vectors, stress rosettes at the element Gauss points, the deformed shape of the outline of the body analysed, deformed mesh plots and contour plots of displacement and stresses. Reduced capability free student versions of Afena, Felpa and Gentop are available for academic use on the WWW. 
Cost  DOS + Windows, Australian Dollars 3850. DOS Australian Dollars 3300 
Data formats supported  None stated 
Supplier in Australia  University of Sydney 
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