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Author Francqueville, Foucault De ♦ Gilormini, Pierre ♦ Diani, Julie
Source Hyper Articles en Ligne (HAL)
Content type Text
File Format PDF
Language English
Subject Keyword Particulate media ♦ Micro-mechanics ♦ Finite elements ♦ Representative volume element ♦ spi ♦ Engineering Sciences [physics]
Abstract A method is proposed for generating reliable representative volume elements (RVEs) that allows reducing the statistical analysis required for the simulation of the mechanical behavior of isotropic composites highly filled with monosized spheres. The method combines (i) an algorithm inspired from molecular dynamics and associated with an analytical equation of state, and (ii) a geometrical analysis using the two-point correlation function and a nearest-neighbor distribution function. A restrictive selection process is defined, which leads to microstructures reasonably close to randomness and isotropy. The pertinence of the proposed generation and selection of RVEs is confirmed by the simulation of their elastic behavior with the nite elementmethod. In particular, it is shown how the selection procedure allows reducing the computational e ort required to reach reliable elastic moduli by operating on a limited number of suitable RVEs. The results are in good agreement with the generalized self-consistent model and with original experimental data obtained on a composite where an acrylate matrix wasreinforced by sifted glass beads.
Educational Use Research
Learning Resource Type Article
Publisher Date 2019-02-01
Volume Number 158
Page Count 10
Starting Page 277
Ending Page 286