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A multi-scale coupling method to simulate the silica glass behavior under high pressures

Abstract : 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 scope of this work is a typical anomalous glass. The numerical study of this behavior with continuum methods (e.g. FEM, CNEM) presents several difficulties and drawbacks. Because, this requires a very small scale analysis. The discrete methods (e.g. MD, DEM) represent a good choice to simulate this behavior. However, these methods are very time consuming (CPU-wise). In this work, a discrete-continuum coupling method is proposed to study the behavior of this brittle material subjected to high pressures. The coupling results, obtained in this work, compare favorably with past experimental results.
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M Jebahi, D André, Jean-Luc Charles, Frédéric Dau, Ivan Iordanoff. A multi-scale coupling method to simulate the silica glass behavior under high pressures. 2nd ECCOMAS Young Investigators Conference (YIC 2013, Bordeaux, France), Sep 2013, France. ⟨hal-01007427⟩

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