A microscale model for concrete failure in poro-elasto-plastic media
- verfasst von
- Fadi Aldakheel
- Abstract
This work provides a micromechanical framework for modeling water-induced failure mechanisms of concrete in an experimental-virtual lab. The complicated geometry and content of concrete at a lower scale can be detected by a computed tomography (micro-CT) scan. Based on the experimental observations, we developed a constitutive model for the coupled problem of fluid-saturated heterogeneous porous media at fracture. The poro-plasticity model is additively decomposed into reversible-elastic and irreversible-plastic parts. The governing formulations are based on an energetic response function and a dissipated work due to plasticity (Drucker-Prager model), fluid transport (Darcy's law) and fracture (phase-field method) for the multiphysics problem. The model performance is demonstrated through some representative examples in 2D, representing an idealized microstructure of concrete.
- Organisationseinheit(en)
-
Institut für Kontinuumsmechanik
- Typ
- Artikel
- Journal
- Theoretical and Applied Fracture Mechanics
- Band
- 107
- ISSN
- 0167-8442
- Publikationsdatum
- 06.2020
- Publikationsstatus
- Veröffentlicht
- Peer-reviewed
- Ja
- ASJC Scopus Sachgebiete
- Allgemeine Materialwissenschaften, Physik der kondensierten Materie, Maschinenbau, Angewandte Mathematik
- Elektronische Version(en)
-
https://doi.org/10.1016/j.tafmec.2020.102517 (Zugang:
Geschlossen)
