A new C++ workbench to develop discrete element simulations: GranOO
TypeCommunications sans actes
Discrete Model is based on the description of the physical state (velocity, position, temperature, magnetic moment, electric potential ..) of a large number of discrete elements that form the media to be studied. It is not based on a continuous description of the media. Thus, it is particularly well adapted to describe media evolution driven by discontinuous phenomena like the description of multi fracturation followed by debris flow like wear study. Recently, the use of discrete model has been widened to face problem encounteredwith complex rheological behavior and/or multi-physical behavior. Multi-physical problems face complex mathematical formulation because of the mixing of different families of differential equations when continuous approach is chosen. With the discrete model, each particle has a physical state and state evolution is due to local physical particle interaction: it is often much simple to write. To help and promote research in this area, a free platform GranOO has been developed under a C++ environment and is distributed under the GPL license. The main aspect of this platform is presented in this extended abstract and one application is given as example. Details can be found on url www.granoo.org.
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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. ...
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, ...
Using the discrete element method to simulate brittle fracture in the indentation of a silica glass with a blunt indenter ANDRE, Damien; JEBAHI, Mohamed; IORDANOFF, Ivan; CHARLES, Jean-Luc; NEAUPORT, 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 ...
ANDRE, Damien; IORDANOFF, Ivan; CHARLES, Jean-Luc; NEAUPORT, Jérôme (ASME, 2012)This work is a continuation of a previous study that investigated sub-surface damage in silica glass due to surface polishing. In this previous study, discrete element models have shown qualitatively good agreement with ...
MAHEO, Laurent; DAU, Frédéric; ANDRE, Damien; CHARLES, Jean-Luc; IORDANOFF, Ivan (ScienceDirect, 2015)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 ...