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A plasticity model with yield surface distortion for non proportional loading
Marc Louis Maurice François
In order to enhance the modeling of metallic materials behavior in non proportional loadings, a modification of the classical elastic-plastic models including distortion of the yie…
Une nouvelle analyse des symétries d'un matériau élastique anisotrope. Exemple d'utilisation à partir de mesures ultrasonores
Marc Louis Maurice François, Yves Berthaud, Giuseppe Geymonat
This note deals with stiffness tensors measured from anisotropic linear elastic materials, whose symmetry is unknown. Their possible symmetries (exact or approximative) are reveale…
Determination of the symmetries of an experimentally determined stiffness tensor; application to acoustic measurements
Marc Louis Maurice François, Giuseppe Geymonat, Yves Berthaud
For most materials, the symmetry group is known a priori and deduced from the realization process. This allows many simplifications for the measurements of the stiffness tensor. We…
Behavior of cracked materials
Marc Louis Maurice François
Due to their microstructure, quasi brittle materials present rough cracks. Under sliding of the crack lips, this roughness involves in one hand induced opening and in the other han…