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General information


We do not warrant the suitability, accuracy, or operational characteristics of our Software. The software is provided on an "as-is" basis. The user of the software agrees that the distributor of the software has no liability whatever for any damages to the user or to any other party. The distributor will not be responsible for any direct, indirect, incidental, or consequential damages resulting from the use of the software arising out of any breach of the warranty, even if the distributor has been advised of such damages.

Jan Machaček & Patrick Staubach



Other contributors to the current version of numgeo include:


Special thanks go to:

  • William Fuentes ( Implementation of the Hypo+ISA constitutive model.

  • David Masin: Implementation of the Clay Hypoplasticity constitutive model.

  • Andrzej Niemunis & Carlos Grandas-Tavera: Implementation of the Anisotropic Visco-HypoPlasticity (AVHP) constitutive model.

Citing numgeo

If numgeo has been useful to you, we would appreciate an acknowledgment in the form of citations. For this, please use the following works (all together):

title = {Contributions to the numerical modelling of saturated and unsaturated soils},
pagetotal = {257},
institution = {Karlsruher Institut für Technologie ({KIT})},
type = {phdthesis},
author = {Machaček, Jan},
date = {2020},
note = {{ISSN}: 0453-3267
Series: Ver{\"o}ffentlichungen des Institutes f{\"u}r Bodenmechanik und Felsmechanik 
am Karlsruher Institut f{\"u}r Technologie ({KIT})
Volume: 187} }

author = {Staubach, Patrick},
school = {Publications of the Chair of Soil Mechanics, Foundation Engineering
and Environmental Geotechnics, Ruhr-University Bochum, Issue No. 73},
title = {{Contributions to the numerical modelling of pile installation
processes and high-cyclic loading of soils}},
type = {PhD Thesis},
doi = {10.13154/294-9088},
year = {2022} }

title = {Investigation of three sophisticated constitutive soil models: From numerical formulations 
to element tests and the analysis of vibratory pile driving tests},
volume = {138},
issn = {0266352X},
url = {},
doi = {10.1016/j.compgeo.2021.104276},
pages = {104276},
journaltitle = {Computers and Geotechnics},
author = {Macha\v{c}ek, J. and Staubach, P. and Tafili, M. and Zachert, H. and Wichtmann, T.},
urldate = {2021-07-27},
date = {2021-10},
langid = {english} }

author = {Patrick Staubach and Jan Macha{\v{c}}ek},
title = {Separating fluid and solid contact constraints for hydro-mechanically
coupled finite elements discretising fluid displacement},
doi = {10.1016/j.cma.2023.116451},
issn = {00457825},
journal = {Computer Methods in Applied Mechanics and Engineering},
pages = {116451},
publisher = {Elsevier B.V.},
volume = {416},
year = {2023}}