ALERT Workshop 2019
30^th  – 2^nd October 2019, Aussois, France

DAY 1, MONDAY, 30th October
Upscaling in Geotechnical Engineering (70th anniversary of Roberto Nova)
Coordinators: C. Di Prisco, C. Jommi and C. Tamagnini

• A challenging problem: how can discrete element simulations bring advances in constitutive modelling? (B. Chareyre)
• A double-scale FEMxDEM model applied to cohesive-frictional granular materials in polyaxial loading conditions (C. Couture)
• FFT-based Homogenization of Gas Hydrates Bearing Sediments (A. Alavoine)
• Revisiting failure in granular media from discrete constitutive moedellings (L. Sibille)
• Multi-scale modeling of sand-silt mixtures with application on internal erosion (P.-Y. Hicher)
• Revisiting the Nova “Sinfonietta Classica”: application to granular soils subjected to internal erosion by suffusion (Q. rousseau, G. Sciarra, R. Gelet and D. Marot)
• Constitutive laws for crushable solides accounting for grain-sclae processes (G. Buscarnera)
• Numerical simulation of saturated active clay under chemo-mechanical laoding (F. Ghalamzan, A Gajp and L. Simeoni)
• Multiphase approach to modelling of fast landslides and related phenomena (M. Pastor)
• A granular hydrodynamic model covering solid, fluid and gaseous states and transitions in between (E. Alaei, B. Marks and I. Einav)
• Numerical modelling of a bentonite seal: From small scale experiments to real structures (L. Gramegna)
• Definition of macroelements models for reproducing the hyromechanical coupled response of tunnel fronts and shallow foundation (L. Flessati and C. Di Prisco)
• Macroelement modelling in geomechanics (P. Kotronis)

DAY 2, TUESDAY 1st October
The mechanics of root-soil systems: from microscopic to macroscopic approaches
Coordinators: E. Kolb and L. Sibille

• Quanrification of mechanical and hydrological root-reinforcement (G. Meijer)
• Experimental and numerical investigations of soil-root interactions for analysing the impact of forest vegetation on shallow landslides (G. Veylon and F. Bourrier)
• Scaling behaviour of root growth in granular materials (F. Radjai)
• Kinetics of groth reponses of a root encountering an obstacle (M.-B. Bogeat-Triboulot)
• Plant root growing against or around mechanical obstacles (E. Kolb)
• The cap size and shapes of Arabidopsis thaliana primary roots impacr the root responses to an increase in medium strength (V. Legue)
• Root anchorage of trees under wind load (P. Defossez)
• Physics and hydrology of mucilage-soil interactions (A. Carminati)
• Digital image analysis of the root-soil interaction (F. Anselmucci)
• Multi-scale observations on a root-permeated compacted soil at different hydraulic states (A. Fraccica)

DAY 3, WEDNESDAY 2nd October
Computational methodes in snow and avalanche release mechanics
Coordinators: J. Gaume, P. Hagenmuller, F. Nicot and G. Chambon

• General challenges on snow and avalanche mechanics: snow avalanches – from snow failure to slab release (J. Swheizer, B. Bergfeld, G. Bobillier, A. Capelli, J. Gaume, B. Reuter and A. Van Herwijnen)
• Towards field measurements of crack propagtion in weak snwopack layers at the slope scale (A. Van Herwijnen and B. Bergfeld)
• Acoustic emissions from progressive failure of snow (A. Capelli, I. Reiweger and J. Schweizer)
• Micromechanical modelling of snow mechanics: micromechanical discrete element experiments with snow – DEM it (C. Willibald, S. Scheuber, H. Lowe, J. Dual and M. Schneebeli)
• Micromechanical modeling of snow failure and dynamic fracture (G. Bobilier, A. Van Herwijnen, B. Bergfeld, J. Gaume and J. Schweizer)
• Modeling mixed-mode weak layer anticrack collapse – insights into the interaction of stress and energy (P. Rosendahl and P. Weissgraeber)
• Numerical homogenization and constitutive modelling: Muliscale modeling of dry snow physics and mechanics: some recent advances and current challenges (C. Geindreau, F. Flin, N. calonne, A. Wautier and R. Granger)
• From X-ray tomography images to a numerical homogenized formulation of snow viscoplasticity (A. Wautier, F. Flin and C. Geindreau)
• Micro-mechanically-based modelling of snow failure and post failure behavior (G. Chambon, T. Mede, P. Hagenmuller and F. Nicot)
• Microstructural investigation of the cone penetration test in snow (P. Hagenmuller, I. Peinke and G. Chambon)
• Slope-scale modelling: Geomechanics perspective on some issues in snow and snow avalanche (W. Wu)
• A continuum damage material point methode for snow and avalanche mechanics (J. gaume, A. Van Herwijnen, T. gast, J. Teran, S. Wang, X. Li, L. Blatnny, B. Trottet and C. Jiang)
• Modelling dense flow regimes in snow avalanches using DEM (C. Ligneau, B Sovilla and J. Gaume)