Virial stress-based model to simulate the silica glass densification with the discrete element method
Article dans une revue avec comité de lecture
Abstract
The discrete element method (DEM) presents an alternative way to model complex mechanical problems of silica glass, such as brittle fracture. Since discontinuities are naturally considered by DEM, no complex transition procedure from continuum phase to discontinuum one is required. However, to ensure that DEM can properly reproduce the silica glass cracking mechanisms, it is necessary to correctly model the different features characterizing its mechanical behavior before fracture. Particularly, it is necessary to correctly model the densification process of this material which is known to strongly influence the fracture mechanisms. The present paper proposes a new and very promising way to model such process which is assumed to occur only under hydrostatic pressure. An accurate predictive-corrective densification model is developed. This model shows a great flexibility to reproduce extremely complex densification features. Furthermore, it involves only one calibration parameter, which makes it very easy to apply. This new model represents a major step towards accurate modeling of materials permanent deformation with the discrete element method, which has long been a huge challenge in applying this method for continuum problems.
Files in this item
Related items
Showing items related by title, author, creator and subject.
-
Communication avec acteJEBAHI, Mohamed; ANDRE, Damien; DAU, Frédéric; CHARLES, Jean-Luc; IORDANOFF, Ivan (2013)The indentation response of glasses can be classified into three classes : normal, anomalous and intermediate depending on the deformation mechanism and the cracking response. Silica glass, as a typical anomalous glass, ...
-
Article dans une revue avec comité de lectureJEBAHI, Mohamed; ANDRÉ, Damien; DAU, Frédéric; CHARLES, Jean-Luc; IORDANOFF, Ivan (Elsevier, 2013)The indentation response of glasses can be classified under three headings: normal, anomalous and intermediate, depending on the deformation mechanism and the cracking response. Silica glass, as a typical anomalous glass, ...
-
Article dans une revue avec comité de lectureJEBAHI, Mohamed; CHARLES, Jean-Luc; DAU, Frédéric; ILLOUL, Lounès; IORDANOFF, Ivan (Elsevier, 2013)The coupling between two dissimilar numerical methods presents a major challenge, especially in case of discrete–continuum coupling. The Arlequin approach provides a flexible framework and presents several advantages in ...
-
Article dans une revue avec comité de lectureJEBAHI, Mohamed; DAU, Frédéric; CHARLES, Jean-Luc; IORDANOFF, Ivan (Springer Verlag, 2014)Multiscale modeling aims to solve problems at the engineering (macro) scale while considering the complexity of the microstructure with minimum cost. Generally, two scales are considered in multiscale modeling: small scale, ...
-
Article dans une revue avec comité de lectureJEBAHI, Mohamed; CHARLES, Jean-Luc; DAU, Frédéric; ILLOUL, Lounès; IORDANOFF, Ivan (Elsevier, 2013)The coupling between two dissimilar numerical methods presents a major challenge, especially in case of discrete–continuum coupling. The Arlequin approach provides a flexible framework and presents several advantages in ...