a 2D and 3D non-linear multi purpose finite element program for geotechnical boundary value problems
numgeo at a glance
numgeo features different multi-phase element formulations that can be used for quasi-static as well as dynamic
problems (u-p Elements, u-p-U elements, u-U elements):
numgeo offers a wide variety of sophisticated constitutive soil models:
numgeo uses state-of-the art mortar contact discretisation techniques:
@inproceedings{machaček2023automatic,
title={Automatic Parameter Calibration of Two Advanced Constitutive Models},
author={Machaček, Jan and Siegel, Simon and Staubach, Patrick and Zachert, Hauke},
booktitle={Challenges and Innovations in Geomechanics},
year={2023},
publisher={Springer International Publishing}
}
@article{staubach2023monopile,
title={Monopile installation in clay and subsequent response to millions of lateral load cycles},
author={Staubach, Patrick and Tschirschky, Lisa and Machaček, Jan and Wichtmann, Torsten},
journal={Computers and Geotechnics},
year={2023}
}
@article{staubach2023deep,
title={Deep vibratory compaction simulated using a high-cycle accumulation model},
author={Staubach, Patrick and Kimmig, Ivo and Machaček, Jan and Wichtmann, Torsten and Triantafyllidis, Theodoros},
journal={Soil Dynamics and Earthquake Engineering 166:107763},
year={2023}
}
@article{ machaček2023theory,
title={A theory of porous media for unsaturated soils with immobile air},
author={ Machaček, Jan and Fuentes, William and Staubach, Patrick and Zachert, Hauke and Wichtmann, Torsten and Triantafyllidis, Theodoros},
journal={Computers and Geotechnics 157:105324},
year={2023}
}
@article{staubach2022,
title={ A high-cycle accumulation model for clay and its application to monopile foundations},
author={Staubach, Patrick and Machaček, Jan and Tafili, Merita and Wichtmann, Torsten},
journal={Acta Geotechnica},
year={2022}
}
@article{staubach2022,
title={ Novel approach to apply existing constitutive soil models to the modelling of interfaces},
author={Staubach, Patrick and Machaček, Jan and Wichtmann, Torsten},
journal={ International Journal for Numerical and Analytical Methods in Geomechanics},
year={2022}
}
@article{staubach2022mortar,
title={Mortar contact discretisation methods incorporating interface models based on Hypoplasticity and Sanisand: application to vibratory pile driving},
author={Staubach, Patrick and Machaček, Jan and Wichtmann, Torsten},
journal={Computers and Geotechnics},
year={2022}
}
@inproceedings{machaček2022back,
title={Back-calculations of Centrifuge Tests on Pile Groups Subjected to High-cyclic Loading},
author={Machaček, Jan and Brosz, Frederik and Staubach, Patrick and Wichtmann, Torsten and Zachert, Hauke},
booktitle={DFI-EFFC International Conference on Deep Foundations and Ground Improvement: Smart Construction for the Future},
year={2022},
publisher={Deep Foundations Institute}
}
@phdthesis{staubach2022contributions,
title={Contributions to the numerical modelling of pile installation processes and high-cyclic loading of soils},
author={Staubach, Patrick},
school={Lehrstuhl für Bodenmechanik, Grundbau und Umweltgeotechnik, Ruhr-Universität Bochum},
year={2022}
}
@article{staubach2022long,
title={Long-term response of piles to cyclic lateral loading following vibratory and impact driving in water-saturated sand},
author={Staubach, Patrick and Machaček, Jan and Bienen, Britta and Wichtmann, Torsten},
journal={Journal of Geotechnical and Geoenvironmental Engineering},
year={2022}
}
@inproceedings{staubach2022langzeitverhalten,
title={Langzeitverhalten von hochzyklisch beanspruchten Pfahlgründungen unter Berücksichtigung des Installationsprozesses},
author={Staubach, Patrick and Machaček, Jan},
booktitle={37. Baugrundtagung},
year={2022},
publisher={DGGT}
}
@article{machaček2022automatic,
title={On the automatic parameter calibration of a hypoplastic soil model},
author={Machaček, Jan and Staubach, Patrick and Gran-das, Carlos and Wichtmann, Torsten and Zachert, Hauke},
journal={Acta Geotechnica},
year={2022}
}
@inproceedings{staubach2022impact,
title={Impact of the constitutive contact model on the simulation of model tests on monopiles with high-cyclic loading},
author={Staubach, Patrick and Machaček, Jan and Wichtmann, Torsten},
booktitle={20th International Conference on Soil Mechanics and Geotechnical Engineering},
year={2022}
}
@inproceedings{ machaček2021numgeo,
title={numgeo: A finite-element program for the simulation of hydro-mechanically coupled geotechnical processes},
author={ Machaček, Jan and Staubach, Patrick },
booktitle={Fachsektionstagung Geotechnik},
year={2021},
publisher={Deutsche Gesellschaft für Geotechnik e.V. (DGGT)}
}
@article{machaček2021investigation,
title={Investigation of three sophisticated constitutive soil models: From numerical formulations to element tests and the analysis of vibratory pile driving tests},
author={Machaček, Jan and Staubach, Patrick and Tafili, Merita and Zachert, Hauke and Wichtmann, Torsten},
journal={Computers and Geotechnics},
year={2021},
pages={104276}
}
@article{staubach2021large,
title={Large-deformation analysis of pile installation with subsequent lateral loading: Sanisand vs. Hypoplasticity},
author={Staubach, Patrick and Machacek, Jan and Wichtmann, Torsten},
journal={Soil Dynamics and Earthquake Engineering},
year={2021},
pages={106964},
publisher={Elsevier}
}
@article{staubach2021enhancement,
title={Enhancement of a high-cycle accumulation model by an adaptive strain amplitude and its application to monopile foundations},
author={Staubach, Patrick and Machacek, Jan and Tschirschky, Lisa and Wichtmann, Torsten},
journal={International Journal for Numerical and Analytical Methods in Geomechanics},
year={2021},
pages={1-24},
publisher={Wiley}
}
@article{staubach2021back,
title={Back-analysis of model tests on piles in sand subjected to long-term lateral cyclic loading: Impact of the pile installation and application of the HCA model},
author={Staubach, Patrick and Machaček, Jan and Sharif, Raihan and Wichtmann, Torsten},
journal={Computers and Geotechnics},
year={2021},
pages={104018}
}
@article{staubach2021vibratory,
title={Vibratory pile driving in water-saturated sand: Back-analysis of model tests using a hydro-mechanically coupled CEL method},
author={Staubach, Patrick and Machacek, Jan and Josefine Skowronek and Wichtmann, Torsten},
journal={Soils and Foundations},
year={2021},
pages={144-159},
publisher={Elsevier}
}
@phdthesis{machacek2020contributions,
title={Contributions to the Numerical Modelling of Saturated and Unsaturated Soils},
author={Machacek, Jan},
school={Veröffentlichung des Instituts für Bodenmechanik und Felsmechanik am Karlsruher Institut für Technologie (KIT)},
year={2020}
}
@inproceedings{staubach2020validierung,
title={Validierung eines hochzyklischen Akkumulationsmodells anhand von Modellversuchen an Monopiles mit einer großen Anzahl an Belastungszyklen},
author={Staubach, Patrick and Machacek, Jan and Wichtmann, Torsten},
booktitle={Leipziger Kolloquium Forschung in der Geotechnik},
year={2020},
publisher={Hochschule für Technik, Wirtschaft und Kultur Leipzig}
}
@inproceedings{staubach2019einfluss,
title={Einfluss der Relativbeschleunigung bei dynamischer Beanspruchung von Mehrphasenmedien am Beispiel der Vibrationsrammung},
author={Staubach, Patrick and Machaček, Jan},
booktitle={Fachsektionstagung Geotechnik},
year={2019},
pages={340-345},
month={10},
publisher={Deutsche Gesellschaft für Geotechnik e.V. (DGGT)}
}