Details
| Original language | English |
|---|---|
| Article number | 102517 |
| Journal | Theoretical and Applied Fracture Mechanics |
| Volume | 107 |
| Early online date | 13 Feb 2020 |
| Publication status | Published - Jun 2020 |
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.
Keywords
- Concrete, Experimental observation, Microstructure, Phase-field modeling, Poro-plasticity
ASJC Scopus subject areas
- Materials Science(all)
- General Materials Science
- Physics and Astronomy(all)
- Condensed Matter Physics
- Engineering(all)
- Mechanical Engineering
- Mathematics(all)
- Applied Mathematics
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In: Theoretical and Applied Fracture Mechanics, Vol. 107, 102517, 06.2020.
Research output: Contribution to journal › Article › Research › peer review
}
TY - JOUR
T1 - A microscale model for concrete failure in poro-elasto-plastic media
AU - Aldakheel, Fadi
N1 - Funding Information: The corresponding author (FA) gratefully acknowledges support for this research by the “German Research Foundation” ( DFG ) in the Priority Program SPP 2020 within its second funding phase. FA would like to thank Dr. Blaž Hudobivnik for his support with numerical issues. Professors Peter Wriggers (IKM) and Ludger Lohaus (IfB) detailed comments and suggestions are highly acknowledged.
PY - 2020/6
Y1 - 2020/6
N2 - 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.
AB - 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.
KW - Concrete
KW - Experimental observation
KW - Microstructure
KW - Phase-field modeling
KW - Poro-plasticity
UR - http://www.scopus.com/inward/record.url?scp=85081125711&partnerID=8YFLogxK
U2 - 10.1016/j.tafmec.2020.102517
DO - 10.1016/j.tafmec.2020.102517
M3 - Article
AN - SCOPUS:85081125711
VL - 107
JO - Theoretical and Applied Fracture Mechanics
JF - Theoretical and Applied Fracture Mechanics
SN - 0167-8442
M1 - 102517
ER -