Combined effects of hardening and void shape on the plasticity of porous solids under cyclic loadings including shear
Year: 2025
Type: article
Abstract: The aim of this work is to study the effect of cyclic loadings including shear on the ductile behavior of porous materials. We use the recent model of Roubaud et al. (2024), based on the sequential limit-analysis of an ellipsoidal cell containing an ellipsoidal cavity, in which the heterogeneous distribution of hardening is accounted for by considering a finite number of ellipsoidal layers. The model is implemented numerically in order to study the combined effects of hardening and void shape on cyclic ductile behavior. The predictions of the model are compared to finite element micromechanical unit-cell calculations with initially spherical voids, for various loading cases and hardening laws. Under cyclic loadings at low stress triaxiality levels, significant ratcheting effects in porosity, void shape and void orientation are observed. Overall, the predictions of the model are in agreement with the results of unit-cell calculations.
Authors: François Roubaud, Cihan Tekoğlu, Almahdi Remmal, Léo Morin, Jean-Baptiste Leblond
Institutions: Centre National de la Recherche Scientifique, Sorbonne Université, Institut Jean Le Rond d'Alembert, Framatome (France), Université Pierre-et-Marie-Curie, TOBB University of Economics and Technology, Arts et Métiers, Institut de Mécanique et d'Ingénierie de Bordeaux, Institut Polytechnique de Bordeaux
Language: English
Subfield: Mechanical Engineering
Field: Engineering
Domain: Physical Sciences
Open Access status: hybrid
Estimated APC paid: $4,220
OpenAlex ID: W4416065697