An alternative 3D model for damage induced anisotropy and unilateral effect in microcracked materials

Hélène Welemane (1) , Fabrice Cormery (1)

1 LML - Laboratoire de Mécanique de Lille - FRE 3723

A three-dimensional model of damage by microcrack growth is proposed to account for the mechanical behavior of quasi brittle materials (especially for concrete and rocks). The emphasis is put on the induced anisotropy and on the elastic moduli dependence on the opening and closure of microcracks (unilateral effect). This formulation is based first on a damage characterization throught the microcracked density distribution, and secondly avoids the use of spectral decompositions generally adopted in literature and which induce some major inconsistencies.

Mots clés: Damage modeling; Microcracks; Unilateral effect

Domaines: Génie mécanique [physics.class-ph]; Génie mécanique [physics.class-ph]

Hélène Welemane, Fabrice Cormery. An alternative 3D model for damage induced anisotropy and unilateral effect in microcracked materials. Journal de Physique IV Proceedings, 2003, vol. 105, pp. 329-336. ⟨10.1051/jp4:20030204⟩. ⟨hal-00758891⟩