Details
| Original language | English |
|---|---|
| Title of host publication | IUTAM Symposium on Theoretical, Computational and Modelling Aspects of Inelastic Media - Proceedings of the IUTAM Symposium |
| Pages | 15-26 |
| Number of pages | 12 |
| Publication status | Published - 2008 |
| Event | IUTAM Symposium on Theoretical, Computational and Modelling Aspects of Inelastic Media - Cape Town, South Africa Duration: 14 Jan 2008 → 18 Jan 2008 |
Publication series
| Name | IUTAM Bookseries |
|---|---|
| Volume | 11 |
| ISSN (Print) | 1875-3507 |
Abstract
Based on a micro-structural finite-element model using computer-tomography scans at micro meter length-scale, damage due to frost within hardened cement paste (HCP) is evaluated. In order to establish microscopic constitutive equations comparison with experimental data at macro-level are performed together with parameter identification. Subsequently, damage due to frost is simulated numerically: the water filled pores of HCP increase in volume during a freezing process which yields an inelastic material behavior. Numerical simulations at micro-structural level are performed for different moistures and temperatures. Upscaling then leads to an effective correlation between moisture, temperature and the inelastic material behaviour. Finally, thermomechanically coupling is introduced on the macro-scale and an effective constitutive equation for HCP is developed using the abovementioned temperature-moisture-damage correlation.
Keywords
- Cement paste, Damage, Finite elements, Frost, Multi-scale
ASJC Scopus subject areas
- Engineering(all)
- Civil and Structural Engineering
- Engineering(all)
- Automotive Engineering
- Engineering(all)
- Aerospace Engineering
- Physics and Astronomy(all)
- Acoustics and Ultrasonics
- Engineering(all)
- Mechanical Engineering
Cite this
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IUTAM Symposium on Theoretical, Computational and Modelling Aspects of Inelastic Media - Proceedings of the IUTAM Symposium. 2008. p. 15-26 (IUTAM Bookseries; Vol. 11).
Research output: Chapter in book/report/conference proceeding › Conference contribution › Research › peer review
}
TY - GEN
T1 - Material characterization based on micro-structural computations and homogenization
AU - Wriggers, Peter
AU - Hain, M.
PY - 2008
Y1 - 2008
N2 - Based on a micro-structural finite-element model using computer-tomography scans at micro meter length-scale, damage due to frost within hardened cement paste (HCP) is evaluated. In order to establish microscopic constitutive equations comparison with experimental data at macro-level are performed together with parameter identification. Subsequently, damage due to frost is simulated numerically: the water filled pores of HCP increase in volume during a freezing process which yields an inelastic material behavior. Numerical simulations at micro-structural level are performed for different moistures and temperatures. Upscaling then leads to an effective correlation between moisture, temperature and the inelastic material behaviour. Finally, thermomechanically coupling is introduced on the macro-scale and an effective constitutive equation for HCP is developed using the abovementioned temperature-moisture-damage correlation.
AB - Based on a micro-structural finite-element model using computer-tomography scans at micro meter length-scale, damage due to frost within hardened cement paste (HCP) is evaluated. In order to establish microscopic constitutive equations comparison with experimental data at macro-level are performed together with parameter identification. Subsequently, damage due to frost is simulated numerically: the water filled pores of HCP increase in volume during a freezing process which yields an inelastic material behavior. Numerical simulations at micro-structural level are performed for different moistures and temperatures. Upscaling then leads to an effective correlation between moisture, temperature and the inelastic material behaviour. Finally, thermomechanically coupling is introduced on the macro-scale and an effective constitutive equation for HCP is developed using the abovementioned temperature-moisture-damage correlation.
KW - Cement paste
KW - Damage
KW - Finite elements
KW - Frost
KW - Multi-scale
UR - http://www.scopus.com/inward/record.url?scp=84862281711&partnerID=8YFLogxK
M3 - Conference contribution
AN - SCOPUS:84862281711
SN - 9781402090899
T3 - IUTAM Bookseries
SP - 15
EP - 26
BT - IUTAM Symposium on Theoretical, Computational and Modelling Aspects of Inelastic Media - Proceedings of the IUTAM Symposium
T2 - IUTAM Symposium on Theoretical, Computational and Modelling Aspects of Inelastic Media
Y2 - 14 January 2008 through 18 January 2008
ER -