TOCHNOG
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Category | Numerical analysis (general) |
Publisher | FEAT |
Platform | Win95/98, WinNT, UNIX, HP, Linux, SGI, Sparc |
Status | Commercial |
Description | TOCHNOG is a general finite element analysis program for static, quasi-static and dynamic analyses. Input: Format free input. Boundary conditions at geometrical entities. Output: Output at geometrical points. History of variables. Interface files for postprocessing. Finite elements supported: 1D, 2D and 3D. Only isoparametric elements, no beams and shells. Linear simplex elements (2 node bar, 3 node triangle, 4 node tetrahedron). A full family of first to fourth order bar, quadrilateral and brick elements. Mesh generation: Macro regions are automatically divided into finite elements. Local h-refinement (e.g. using residues in equations). Global h-refinement. Global p-refinement (polynomial refinement). Remeshing (using residues in equations or element shapes). Building a totally new mesh. Mapping from old state variables. Equations and materials supported: Convection-diffusion equation - Temperature calculations. Fluids - Stokes and Navier-Stokes. Solids - Elasticity (isotropy and transverse isotropy). - Plasticity (Von-Mises, Mohr-Coulomb, Gurson, etc.; plasticity surfaces can be arbitrarily combined). - Damage. - Thermal stresses. - Hypoelasticity. - Viscoelasticity. - Viscoplasticity. - Viscosity. Ground water flow equation - Storage equation. Wave equation. Residues in equations can be printed/plotted. Error estimates for all data (stresses, forces, temperatures, etc.). Nonlocal calculations for softening materials - Strain averaging within a radius for all material models. Interaction analysis - Automatic fluid-solid interaction. Temperature effects on fluids, solids. Contact analysis - Contact with and without friction. Frictional heat generation. Frames of description - Lagrangian, Eulerian, and AEL (arbitrary Eulerian Lagrangian) calculations. The following functionality is parallized: - element nodal force calculation. - contact algorithm. - mapping of state variables when building a new mesh. - determination of boundary conditions. - nonlocal strain calculation. Features: Automatic distribution of tendons over linear finite elements (automatic embedment). Inverse modeling. Restart possibility. Convection wiggle stabilization (both for low and high order elements). It is available as both a supported commercial product and as unsupported freeware. |
Cost | Supported Euros 5050. Academic Euros 2595. Also unsupported freeware on WWW. |
Data formats supported | None stated |
Supplier in Netherlands | FEAT |
Supplier in United States of America | Sourceforge.net |
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