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

Communication sans acte
Auteur
ccJEBAHI, Mohamed
ANDRE, Damien
CHARLES, Jean-Luc
ccDAU, Frédéric
ccIORDANOFF, Ivan

URI
http://hdl.handle.net/10985/8267
Date
2013

Résumé

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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Nom:
MPI_ECCOMAS_andre_2013-2.pdf
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  • Institut de Mécanique et d’Ingénierie de Bordeaux (I2M)

Documents liés

Visualiser des documents liés par titre, auteur, créateur et sujet.

  • Simulation of Vickers indentation of silica glass 
    Article dans une revue avec comité de lecture
    ccJEBAHI, Mohamed; ANDRE, Damien; ccDAU, Frédéric; CHARLES, Jean-Luc; ccIORDANOFF, 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 
    Communication avec acte
    ANDRE, Damien; CHARLES, Jean-Luc; ccIORDANOFF, Ivan; ccDAU, Frédéric; ccJEBAHI, Mohamed (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, ...
  • Using the discrete element method to simulate brittle fracture in the indentation of a silica glass with a blunt indenter 
    Article dans une revue avec comité de lecture
    ANDRE, Damien; CHARLES, Jean-Luc; NEAUPORT, Jérôme; ccIORDANOFF, Ivan; ccJEBAHI, Mohamed (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 ...
  • Multiscale Modeling of Complex Dynamic Problems: An Overview and Recent Developments 
    Article dans une revue avec comité de lecture
    CHARLES, Jean-Luc; ccIORDANOFF, Ivan; ccDAU, Frédéric; ccJEBAHI, Mohamed (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, ...
  • 3D coupling approach between discrete and continuum models for dynamic simulations (DEM–CNEM) 
    Article dans une revue avec comité de lecture
    CHARLES, Jean-Luc; ILLOUL, Lounès; ccIORDANOFF, Ivan; ccDAU, Frédéric; ccJEBAHI, Mohamed (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 ...

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