A multi-scale coupling method to simulate the silica glass behavior under high pressures
Language
en
Communication dans un congrès avec actes
This item was published in
2nd ECCOMAS Young Investigators Conference (YIC 2013, Bordeaux, France), 2013-09.
English 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 ...Read more >
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.Read less <
English Keywords
Coupling
silica
Vickers indentation
Origin
Hal imported