The code was founded in the early 1980's by Han Huetink and since then continuously developed. The code is designed to solve non-linear plasticity problems and therefore well suited to model forming processes like sheet forming, bulk forming and welding.

Publications

Citations Google Scholar
See Also Publications on "Mechanics of Forming Processes" at the University of Twente.

The package has a very limited GUI for preprocessing. For more complicates mesh generation you need the commercial MSC-Patran package. There is a Patran Student edition . Also the free GID package has limited options for Dieka preprocessing.
The included postprocessing features are usually sufficient for examining the results, Patran and GID have more extensive features.
Examples of Applications:
          Deepdrawing
          Extrusion
          Hydroforming 
          Materials 
          Design of Robust Forming Processes by Numerical Simulations