Damage-to-fracture transition through an Eikonal Non-Local (ENL) continuum damage formulation with embedded strong discontinuities

Flavien Thierry (1) , Giuseppe Rastiello (2) , Cédric Giry (1) , Fabrice Gatuingt (1)

1 LMT - Laboratoire de Mécanique et Technologie
2 SEMT - Service d'Etudes Mécaniques et Thermiques

The Eikonal Non-Local damage model (ENL) is an integral-based regularization method with damage-dependent non-local interactions. This contribution introduces the transition from an ENL formulation to a strong discontinuity model in a one-dimensional case. By introducing the formation of a cohesive crack in highly damaged areas, this new formulation seeks to solve problems of objectivity of results with respect to the mesh size for regularization methods with evolution of non-local interactions leading to strain localization.

Mots clés: Eikonal Non Local damage; Regularization; Evolving non local interactions; Strain localization; Embedded discontinuities

Domaines: Structures; Mécanique des matériaux [physics.class-ph]; Matériaux composites et construction

Flavien Thierry, Giuseppe Rastiello, Cédric Giry, Fabrice Gatuingt. Damage-to-fracture transition through an Eikonal Non-Local (ENL) continuum damage formulation with embedded strong discontinuities. 10th International Conference on Fracture Mechanics of Concrete and Concrete Structures, FraMCoS-X, Jun 2019, Bayonne, France. ⟨10.21012/FC10.233386⟩. ⟨hal-02436622⟩