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Contribution à la modélisation du comportement mécanique du verre : étude des relations entre densification et indentation

Abstract : This work aims at improving the modelisation of mechanical behaviour of silica and silicate glasses during indentation. First we focused on measurement of permanent deformation observed in hydrostatic compression and indentation test, which is a change in volume called densification. Using an elastic model, both in analytical models of contact and in finite element simulation, we estimated such volume. In a second time, we proposed a constitutive model in order to evaluate the respective role of different type of deformation : shear stress and densification. These models were implemented to a finite element software (Cast3M). We also included in our models the pressure dependance of elastic properties, observed during compressive test, in order to improve the description of the comportment in indentation.
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https://tel.archives-ouvertes.fr/tel-00426623
Contributor : Solène Gicquel Petit <>
Submitted on : Tuesday, October 27, 2009 - 9:41:06 AM
Last modification on : Wednesday, May 16, 2018 - 11:22:58 AM
Long-term archiving on: : Tuesday, October 16, 2012 - 12:45:50 PM

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  • HAL Id : tel-00426623, version 1

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Solène Gicquel. Contribution à la modélisation du comportement mécanique du verre : étude des relations entre densification et indentation. Mécanique [physics.med-ph]. Université Rennes 1, 2009. Français. ⟨tel-00426623⟩

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