Calibration of the hardening soil model in excalibre

Authors

  • Do Chinh Phuong Charles University, Faculty of Science, Institute of Hydrogeology, Engineering Geology and Applied Geophysics, Albertov 6, 128 00 Prague 2, Czech Republic
  • Tomáš Kadlíček Charles University, Faculty of Science, Institute of Hydrogeology, Engineering Geology and Applied Geophysics, Albertov 6, 128 00 Prague 2, Czech Republic
  • David Mašín Charles University, Faculty of Science, Institute of Hydrogeology, Engineering Geology and Applied Geophysics, Albertov 6, 128 00 Prague 2, Czech Republic
  • Jan Najser Charles University, Faculty of Science, Institute of Hydrogeology, Engineering Geology and Applied Geophysics, Albertov 6, 128 00 Prague 2, Czech Republic

DOI:

https://doi.org/10.14311/APP.2026.56.0023

Keywords:

hardening soil model, calibration, ExCalibre

Abstract

The hardening soil model is one of the most commonly used constitutive models in engineering practice. This model is based on multi-surface plasticity and combines the well-known Mohr-Coulomb failure criterion, a hardening shear surface and a cap yield surface into a single model. The stress-strain behaviour is improved by including nonlinear elasticity. In this paper a calibration tool for a modified version of the hardening soil model is presented which is currently implemented in the online calibration application called ExCalibre.

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Published

2026-02-20

Issue

Vol. 56 (2026): 51st and 52nd Conference Foundation Engineering Brno 2023 and 2024

Section

Articles

License

Copyright (c) 2026 Do Chinh Phuong, Tomáš Kadlíček, David Mašín, Jan Najser

Creative Commons License

This work is licensed under a Creative Commons Attribution 4.0 International License.

How to Cite

Phuong, D. C., Kadlíček, T., Mašín, D., & Najser, J. (2026). Calibration of the hardening soil model in excalibre. Acta Polytechnica CTU Proceedings, 56, 23-28. https://doi.org/10.14311/APP.2026.56.0023