A Three-Dimensional Structural Finite Element Program CalculiX Finite Element Models can be built, calculated, and post-processed. Notice: The authors acknowledge that naming conventions and input style formats for CalculiX are based on those used by ABAQUS, a proprietary, general purpose finite element code developed and supported by Hibbitt, Karlsson & Sorensen, Inc (HKS) and are used with kind permission from HKS. Results obtained from CalculiX are in no way connected to ABAQUS. WWW: http://www.calculix.de