Numerical homogenization of hardened cement paste

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OriginalspracheEnglisch
Seiten (von - bis)197-212
Seitenumfang16
FachzeitschriftComputational mechanics
Jahrgang42
Ausgabenummer2
PublikationsstatusVeröffentlicht - 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.

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Numerical homogenization of hardened cement paste. / Hain, M.; Wriggers, Peter.
in: Computational mechanics, Jahrgang 42, Nr. 2, 27.08.2007, S. 197-212.

Publikation: Beitrag in FachzeitschriftArtikelForschungPeer-Review

Hain M, Wriggers P. Numerical homogenization of hardened cement paste. Computational mechanics. 2007 Aug 27;42(2):197-212. doi: 10.1007/s00466-007-0211-9
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