We analyze in two dimensions the mechanical behavior of materials with granular microstructures modeled by means of a variationally formulated strain-gradient continuum approach based on micromechanics and show that it can capture microstructural-size-dependent effects. Tension-compression asymmetry of grain-assembly interactions, as well as microscale damage, is taken into account and the continuum scale is linked to the grain-scale mechanisms. Numerical results are provided for finite deformations and substantiate previous research. As expected, results show interesting size-dependent effects that are typical of strain-gradient modeling.

Two-dimensional analysis of size effects in strain-gradient granular solids with damage-induced anisotropy evolution / Maksimov, V.; Barchiesi, E.; Misra, A.; Placidi, L.; Timofeev, D.. - In: JOURNAL OF ENGINEERING MECHANICS. - ISSN 0733-9399. - 147:11(2021), p. 04021098. [10.1061/(ASCE)EM.1943-7889.0002010]

Two-dimensional analysis of size effects in strain-gradient granular solids with damage-induced anisotropy evolution

Barchiesi E.;
2021-01-01

Abstract

We analyze in two dimensions the mechanical behavior of materials with granular microstructures modeled by means of a variationally formulated strain-gradient continuum approach based on micromechanics and show that it can capture microstructural-size-dependent effects. Tension-compression asymmetry of grain-assembly interactions, as well as microscale damage, is taken into account and the continuum scale is linked to the grain-scale mechanisms. Numerical results are provided for finite deformations and substantiate previous research. As expected, results show interesting size-dependent effects that are typical of strain-gradient modeling.
2021
Two-dimensional analysis of size effects in strain-gradient granular solids with damage-induced anisotropy evolution / Maksimov, V.; Barchiesi, E.; Misra, A.; Placidi, L.; Timofeev, D.. - In: JOURNAL OF ENGINEERING MECHANICS. - ISSN 0733-9399. - 147:11(2021), p. 04021098. [10.1061/(ASCE)EM.1943-7889.0002010]
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/11388/280579
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