Return mapping scheme for the Hoek-Brown model with tension cut-off

Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F68407700%3A21110%2F23%3A00367093" target="_blank" >RIV/68407700:21110/23:00367093 - isvavai.cz</a>
Result on the web
<a href="https://doi.org/10.14311/APP.2023.40.0117" target="_blank" >https://doi.org/10.14311/APP.2023.40.0117</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.14311/APP.2023.40.0117" target="_blank" >10.14311/APP.2023.40.0117</a>

Result language
angličtina
Original language name
Return mapping scheme for the Hoek-Brown model with tension cut-off
Original language description
The present paper revisits a stress update procedure for the Hoek-Brown plasticity model enhanced by a Rankine type of tension cut-off failure criterion. Limiting tensile stresses not only supports the behavior of weak rock masses with a very low tensile strength but in combination with the original Hoek-Brown model improves robustness of the stress update procedure, i.e. the stress return mapping algorithm. Herein, the primary focus is on the stress return from a space of inadmissible trial stresses for which neither the Hoek-Brown yield surface nor its derivative can be evaluated. All potential scenarios are thoroughly discussed both in the framework of single- and multi-surface plasticity. The presented procedures were implemented and verified with the help of the Geo5 FEM software.
Czech name
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Czech description
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Project
<a href="/en/project/GA22-12178S" target="_blank" >GA22-12178S: Data-driven calibration and validation of critical state constitutive models for soils and associated uncertainties</a><br>
Continuities
P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)

Publication year
2023
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

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