Some Free Software structural system solvers

  1. Impact Finite Element Program

    Impact is an explicit Finite Element Program Suite which simulates dynamic impact events. It has a range of elements, contact handling and different material laws. Models can be created, solved and analyzed with the included pre- and postprocessor. Impact is based on an Explicit Time stepping algorithm. These kind of codes are used to simulate dynamic phenomena such as car crashes and similar, usually involving large deformations.


    • Nonlinear simulation with contact and nonlinear material
    • Support elastic, elastoplastic and thermoelastoplastic materials
    • Integrated environment, preprocessor – processor (solver) – postprocessor
    • Support GiD preprocessor via Impact interface module
  2. Tochnog Finite Element Analysis

    Explicit/Impicit Finite Element Program with linear/nonlinear, elastic/hyperelastic/hypoelastic/plastic/visco, contact,thermal,
    fluid capabilities. h/p refinements. Parallel/Distributed solvers available.
    No shell elements but has 2D beams, trusses.

  3. CalculiX

    A Free Software Three-Dimensional Structural Finite Element Program

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