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 modeling, 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.
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.
URL: Impact Finite Element Program