Discrete 3D model as complimentary numerical testing for anisotropic damage

Arnaud Delaplace (1) , Rodrigue Desmorat (1)

1 LMT - Laboratoire de Mécanique et Technologie

It is proposed to use a discrete particle model as a complimentary “numerical testing machine” to identify the hydrostatic elasticity-damage coupling and the corresponding sensitivity to hydrostatic stresses parameter. Experimental tri-axial tensile testing is difficult to perform on concrete material, and numerical testing proves then its efficiency. The discrete model used for this purpose is based on a Voronoi assembly that naturally takes into account heterogeneity. Tri-tension tests on a cube specimen, based on a damage growth control, are presented. A successful identification of the hydrostatic sensitivity function of a phenomenological anisotropic damage model is obtained.

Mots clés: discrete model; anisotropic; damage; cross-identification; virtual testing

Domaines: Mécanique [physics.med-ph]

Arnaud Delaplace, Rodrigue Desmorat. Discrete 3D model as complimentary numerical testing for anisotropic damage. International Journal of Fracture, 2008, pp.20. ⟨10.1007/s10704-008-9183-9⟩. ⟨hal-00270147⟩