A promising way to model cracks in composite using Discrete Element Method
TypeArticles dans des revues avec comité de lecture
In this article, the Discrete Element Method (DEM) is taking advantage for the damage modeling of a composite material. At this stage of work, a Representative Elementary Volume (REV) of an unidirectional composite material modeled in 3D is considered to prove the relevance of the approach. The interest to introduce the Discrete Elements (DE) on the scale of constituents (fiber and matrix) is to be able to report local mechanisms of degradation such as the matrix micro-fissuring, the fiber/matrix debonding and the break of fiber, appropriate to this type of material. The short-term objective is to use this DEM modeling to treat locally the damages induced by an impact loading associated with a conventional Finite Element modeling beyond the damaged zone. First, the geometrical modelings of the fiber and the matrix are presented. The phase of calibration of the DE model intrinsic parameters governing the fiber and matrix behavior and the fiber/matrix interface is afterward retailed. At this stage, each constituent is assumed to be brittle elastic. Then, simulations of longitudinal and transversal tensions but also of in plane and out of plane shearing are performed on the REV using DEM. The results are discussed and compared with those known for the literature. The capacity of the present DEM to capture the crack paths is particularly highlighted.
Showing items related by title, author, creator and subject.
JEBAHI, 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, ...
Simulation du comportement de la silice sous indentation Vickers par la méthode des elements discrets: densification et mécanismes de fissuration JEBAHI, 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, ...
JEBAHI, Mohamed; ANDRÉ, Damien; CHARLES, Jean-Luc; DAU, Frédéric; IORDANOFF, Ivan (2013)The response of glasses subjected to high pressures can be classified into three classes : normal, anomalous and intermediate depending on the deformation mechanism and the cracking pattern. The silica glass which is the ...
Using the discrete element method to simulate brittle fracture in the indentation of a silica glass with a blunt indenter ANDRÉ, Damien; JEBAHI, Mohamed; IORDANOFF, Ivan; CHARLES, Jean-Luc; NÉAUPORT, Jérôme (Elsevier, 2013)The mechanical behavior of materials is usually simulated by a continuous mechanics approach. However, noncontinuous phenomena such as multi-fracturing cannot be accurately simulated using a continuous description. The ...
The GranOO workbench, a new tool for developing discrete element simulations, and its application to tribological problems ANDRE, Damien; CHARLES, Jean-Luc; IORDANOFF, Ivan; NEAUPORT, Jérôme (ScienceDirect, 2014)Discrete models are based on the descriptions of the physical states (e.g., velocity, position, temperature, magnetic momenta and electric potential) of a large number of discrete elements that form the media under study. ...