Projects / Impact


Impact is a finite element program for simulation of dynamic events such as car crashes or other large deformation events. It is kept very simple to make it intuitive to use and easy to change and extend. The program includes a NURBS based pre-processor for modelling, a solver with editor, a post-processor, and a graph plotter for results viewing. Impact also interfaces with several other programs, such as Nastran and Gmsh.

Operating Systems

Recent releases

  •  11 Jul 2007 21:24

    Release Notes: The entire preprocessor model can now be saved in the .in file. It is possible to script drive the geometry and FE model by manually editing the .in file and then reading it into the preprocessor. A bug was fixed in the post-processor where Gradient Result is now visible in the OpenGL accelerated version.

    •  14 Jun 2007 06:03

      Release Notes: This release finally allows groups to be usable in the preprocessor. There is also a bugfix for the NASTRAN file import filter.

      •  02 Jun 2007 21:30

        Release Notes: Several new file parsers have been added to the preprocessor. The UNV format allows interfacing with the Salome mesh generator. The BDF and NASTRAN file formats are simpler, faster, and more robust than the previous implementation. The GMSH reader now works with the version 2 format and does not require any preparation of the mesh. Finally, a group feature has been added but is not complete.

        •  16 Jan 2007 17:54

          Release Notes: This release fixes bugs in the HTML documentation. Preprocessor now imports all elements from a GMSH .msh file, and has faster export of .in files (a few minutes versus an hour). PostProcessor remembers the last directory used. Solver checks for NIP used in Solid_iso_4 element and calculates the correct mass calculation of tetrahedron Solid_iso_4 and Solid_iso_6 elements. The find and replace feature in the editor is improved, but not complete. The Optimizer GUI values now control the optimiser, which has a corrected output when using Solid_iso_4 elements.

          •  01 Oct 2006 19:41

            Release Notes: Bugfixes were made in the GUI. Fracture capability has been added to the Solid_Iso_4 element.


            Project Spotlight


            A Fluent OpenStack client API for Java.


            Project Spotlight

            TurnKey TWiki Appliance

            A TWiki appliance that is easy to use and lightweight.