Jean Furstoss

Jean Furstoss
Université de Lille

Doctor of Philosophy

About

10
Publications
1,326
Reads
How we measure 'reads'
A 'read' is counted each time someone views a publication summary (such as the title, abstract, and list of authors), clicks on a figure, or views or downloads the full-text. Learn more
37
Citations
Introduction
My research focuses on olivine-rich material at different scales using numerical approaches. At the atomic level, I am studying olivine grain boundary structures and properties using MD and DFT. At the mesoscale level, I use level-set and crystal plasticity approaches to simulate microstructural evolutions. At larger scales, I study strain localization in lithosphere using grain size dependent rheologies. My aim is to link scales and improve our knowledge on geodynamics and Earth materials.

Publications

Publications (10)
Article
Full-text available
In this work we explore the low energy complexions of the symmetrical tilt grain boundary (GB) 60.8°//[100](011) in forsterite through molecular dynamics and first principles calculations. Using conservative sampling, we find six stoichiometric complexions with energies ranging from 0.66 to 1.25 J.m−2. We investigate the segregation of MgO vacancy...
Article
Full-text available
Five different interatomic potentials designed for modelling forsterite Mg 2 SiO 4 are compared to ab initio and experimental data. The set of tested properties include lattice constants, material density, elastic wave velocity, elastic stiffness tensor, free surface energies, generalized stacking faults, neutral Frenkel and Schottky defects, in th...
Article
Full-text available
This paper presents a new mesoscopic full field approach for the modeling of microstructural evolutions and mechanical behavior of olivine aggregates. The mechanical framework is based on a reduced crystal plasticity (CP) formulation which is adapted to account for non-dislocation glide strain-accommodating mechanisms in olivine polycrystals. This...
Preprint
Full-text available
This paper presents a new mesoscopic full field approach for the modelling of microstructural evolutions and mechanical behavior of olivine aggregates. The mechanical framework is based on a reduced crystal plasticity (CP) formulation which is adapted to account for non-dislocation glide strain-accommodating mechanisms in olivine polycrystals. This...
Article
Full-text available
In this work we present a simple and convenient method for handling tensors within computational mechanics frameworks based on the Kelvin decomposition. This methodology was set up within a crystal plasticity framework which permits, using the Kelvin base related to the crystal symmetries, to account for elastic anisotropy. The classical mixed velo...
Thesis
Full-text available
Cette thèse a pour but de simuler les évolutions microstructurales des roches du manteau supérieur dans des conditions thermomécaniques représentatives de la lithosphère terrestre. En effet, c’est le comportement mécanique de ces roches qui contrôle, au premier ordre la rhéologie de la lithosphère et donc des plaques tectoniques.Les outils utilisés...
Article
Full-text available
We investigate the effect of solute drag on the grain growth (GG) kinetics in olivine-rich rocks through full field and mean field modelling. Considering a drag force exerted by impurities on grain boundary migration allows reconciling laboratory and natural constraints on olivine GG kinetics. Solute drag is implemented in a full field level-set fr...
Preprint
We investigate the effect of solute drag on grain growth (GG) kinetics in olivine-rich rocks through full field and mean field modelling. Considering a drag force exerted by impurities on grain boundary migration allows reconciling laboratory and natural constraints on olivine GG kinetics. Solute drag is implemented in a full field level-set framew...
Article
Full-text available
We present a full field framework based on the level‐set approach, which enables to simulate grain growth in a multiphase material. Our formalism permits to take into account different types of second phases, which can be static or dynamic (i.e., evolving also by grain growth) and reproduce both transient (evolving relative grain sizes) and steady‐...
Article
In this study, we investigate grain growth within pure olivine systems through numerical simulations. The level set (LS) approach within a finite element (FE) context enables modeling 3D microstructural evolutions such as grain growth. As this phenomenon is inherently a 3D mechanism, the comparison between 2D and 3D models shows differences despite...

Network

Cited By

Projects

Project (1)
Project
Our goal is to derive an innovative and robust method to construct realistic grain boundaries in forsterite Mg2SiO4, the magnesium-rich end-member of olivine at the atomic scale. https://timeman.univ-lille.fr/numogo