May 26, 2018
Free explicit/implicit Finite Element Program
TOCHNOG is a free finite element program with many features. TOCHNOG accepts free format input. Boundary conditions can be imposed at geometrical entities, as well as nodes and elements.
Among the FE models supported are differential equations materials, convection-diffusion equations, Stokes and Navier-Stokes fluids, elasticity isotropy and transverse isotropy, plasticity Von-Mises, Mohr-Coulomb, etc.; plastic surfaces can be arbitrarily combined. Residues in equations and error estimates for all data can be printed or plotted using gnuplot/plotmtv, CalculiX or gmsh.
TOCHNOG supports a choice of description frames including Lagrangian, Eulerian and arbitrary Eulerian-Lagrangian AEL.