Details
| Original language | English |
|---|---|
| Pages (from-to) | 197-212 |
| Number of pages | 16 |
| Journal | Computational mechanics |
| Volume | 42 |
| Issue number | 2 |
| Publication status | Published - 27 Aug 2007 |
Abstract
Based upon a three-dimensional computer-tomography of hardened cement paste, a finite-element mesh at micrometer length scale is introduced. Effective material properties are obtained through numerical homogenization techniques using representative volume elements. Statistical tests, two- and three-dimensional computations and a comparison with experimental data are shown. For the hydration products of hardened cement paste a visco-plastic constitutive equation of Perzyna type including isotropic damage is introduced. The inelastic material parameters are identified solving an optimization problem through a combination of a stochastic genetic algorithm and the deterministic Levenberg-Marquardt method. The time-consuming evaluations of the corresponding objective function are distributed within a network environment automatically.
Keywords
- Hardened cement paste, Homogenization, Microstructure, Parameter identification
ASJC Scopus subject areas
- Engineering(all)
- Computational Mechanics
- Engineering(all)
- Ocean Engineering
- Engineering(all)
- Mechanical Engineering
- Computer Science(all)
- Computational Theory and Mathematics
- Mathematics(all)
- Computational Mathematics
- Mathematics(all)
- Applied Mathematics
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In: Computational mechanics, Vol. 42, No. 2, 27.08.2007, p. 197-212.
Research output: Contribution to journal › Article › Research › peer review
}
TY - JOUR
T1 - Numerical homogenization of hardened cement paste
AU - Hain, M.
AU - Wriggers, Peter
PY - 2007/8/27
Y1 - 2007/8/27
N2 - Based upon a three-dimensional computer-tomography of hardened cement paste, a finite-element mesh at micrometer length scale is introduced. Effective material properties are obtained through numerical homogenization techniques using representative volume elements. Statistical tests, two- and three-dimensional computations and a comparison with experimental data are shown. For the hydration products of hardened cement paste a visco-plastic constitutive equation of Perzyna type including isotropic damage is introduced. The inelastic material parameters are identified solving an optimization problem through a combination of a stochastic genetic algorithm and the deterministic Levenberg-Marquardt method. The time-consuming evaluations of the corresponding objective function are distributed within a network environment automatically.
AB - Based upon a three-dimensional computer-tomography of hardened cement paste, a finite-element mesh at micrometer length scale is introduced. Effective material properties are obtained through numerical homogenization techniques using representative volume elements. Statistical tests, two- and three-dimensional computations and a comparison with experimental data are shown. For the hydration products of hardened cement paste a visco-plastic constitutive equation of Perzyna type including isotropic damage is introduced. The inelastic material parameters are identified solving an optimization problem through a combination of a stochastic genetic algorithm and the deterministic Levenberg-Marquardt method. The time-consuming evaluations of the corresponding objective function are distributed within a network environment automatically.
KW - Hardened cement paste
KW - Homogenization
KW - Microstructure
KW - Parameter identification
UR - http://www.scopus.com/inward/record.url?scp=42449142372&partnerID=8YFLogxK
U2 - 10.1007/s00466-007-0211-9
DO - 10.1007/s00466-007-0211-9
M3 - Article
AN - SCOPUS:42449142372
VL - 42
SP - 197
EP - 212
JO - Computational mechanics
JF - Computational mechanics
SN - 0178-7675
IS - 2
ER -