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An Algorithm for Computing the Compressive Strength of Heterogeneous Cohesive-Frictional Materials - Application to Cement Paste

Published

Author(s)

F P. Ganneau, F -. Ulm, J Gondzio, Edward Garboczi

Abstract

An algorithm based on a finite element discretization of the lower bound yield theorem is applied to digital images, which allows the determination of the compressive strength of highly heterogeneous materials following a Drucker-Prager (or Mohr-Coulomb) yield criterion. The resulting optimization problem is usually very large and sparse and is solved using recent non-linear optimizers based on the interior point method. The algorithm is validated for a laminated composite material, for which an analytical solution is available; and them applied to 2-D slices of 3-D digital microstructural models of cement paste. It is shown that the algorithm converges with mesh refinement towards experimental results.
Citation
International Journal of Solids and Structures

Keywords

algorithm, cement paste, cohesive-frictional, compressive strength, heterogeneous

Citation

Ganneau, F. , Ulm, F. , Gondzio, J. and Garboczi, E. (2021), An Algorithm for Computing the Compressive Strength of Heterogeneous Cohesive-Frictional Materials - Application to Cement Paste, International Journal of Solids and Structures (Accessed December 3, 2021)
Created October 12, 2021