Grenoble Geomechanics Newsletter-no.22

This is the 22nd edition of the GéoMécanique newsletter. The month of May and the days off are over. Despite the holidays, our group doesn’t rest and keeps working hard! This new edition contains the latest news regarding research publications, conference visits and other activities of the staff and students from the GéoMécanique group of Laboratoire 3SR (Sols, Solides, Structures – Risques). If you have something you want to share, please don’t hesitate to contact us at: geomecanique.newsletter@3sr-grenoble.fr. Please feel free to forward the letter to colleagues and friends, and let them know that they can subscribe by themselves here. Enjoy.

SONY DSCA couple of weeks ago the “Journées du labo” took place in Avigliana. We want to thank Olga , Dominique, Mireille and Cyrille for organizing this event. We had the chance to socialize with our colleagues during the coffee breaks, copious lunches and social activities. Plus, some people of our group presented their research to the whole lab. However, the most significant achievement was carried out by Marcus Guadagnin Moravia and Bruna Garcia, the video contest winners and members of the GéoMécanique group:

Publications

The article “Liquid water uptake in unconfined Callovo Oxfordian clay-rock studied with neutron and X-ray imaging” by Eleni Stavropoulou, Edward Andò, Alessandro Tengattini, Matthieu Briffaut, Frédéric Dufour, Duncan Atkins, Gilles Armand, has been published in Acta Geotechnica

“A discrete numerical model involving partial fluid-solid coupling to describe suffusion effects in soils” by R.Aboul Hosna, L.Sibille, N.Benahmed and B.Chareyre has been published in Computers and Geotechnics.

The article “Phase segmentation of concrete x-ray tomographic images at meso-scale: Validation with neutron tomography” by Olga Stamati, Emmanuel Roubin, Edward Andò and Yann Malecot, has been published in Cement and Concrete Composites.

“Modeling concrete exposed to high temperature: Impact of dehydration and retention curves on moisture migration” by D. Dauti, S. Dal Pont, B. Weber, M.Briffaut, N. Toropovs, M. Wyrzykowski, G. Sciumé, has been published in the International Journal for Numerical and Analytical Methods in Geomechanics

“Critical review of the description of concrete’s damage-permeability coupling using continuous and regularized elastic-based damage models – New strain-based matching law” by D. Bouhjiti, M. Ezzedine El Dandachy, F. Dufour, S. Dal Pont, M. Briffaut, J. Baroth, B. Masson has been accepted in the Numerical Methods in Geomechanics.

“COST TU1404 benchmark on macroscopic modelling of concrete and concrete structures at early age: Proof-of-concept stage” by A. Jędrzejewska, F.Benboudjema, L. Lacarriere, M. Azenha, D. Schlicke, S. Dal Pont., A. Delaplace, J. Granja, K. Hájková, P. Heinrich, G. Sciumè, E. Strieder, E. Stierschneider, V. Smilauer, V. Troyan, has been published in Construction and Building Materials.

The International Society of Porous Media “Interpore” released a Research Spotlight on Yade-DEM.org, and more specifically the hydro-mechanical couplings available therein.

 

Visits and conferences

Bruno Chareyre gave a keynote lecture (Coupling DEM and fuids at the pore scale: recent advances and further issues) at the 2nd Yet Another Discrete Element Workshop. The workshop was organized at Irstea Aix en Provence. Eduard Puig also participated with a regular talk entitled “Micromechanical study of multiphase flow based on the lattice Boltzmann method”

Mustafa Sari from the University of New South Wales visited the lab in May and gave a talk on “Geomechanical Modelling of Pore Collapsing in Soft Porous Rocks: Insights From Triaxial Experiments and Numerical Simulations in Sandstone, Mudstone And Shale Samples”.

The International Symposium on Micro to macro mathematical modelling in soil mechanics was held in Reggio Calabria (Italy) on May 29 – June 01, 2018, at the University Mediterranea of Reggio Calabria. Our group delivered the following talks:

  • “Experimental access to the mechanics of sand at its constitutive scale”, Edward Andò
  • “Measuring the evolution of contact fabric in shear bands with x-ray tomography”, Max Wiebicke
  • “An assessment of discrete element approaches to infer intergranular forces from experiments on 2D granular media”, Mathias Tolomeo
  • “In-situ x-ray tests for an image-based FE meso-model for cementitious materials”, Olga Stamati
  • “Discrete element modeling of crushable tube-shaped particles”, Gaël Combe
  • “A micro-mechanics focused experimental investigation of cemented granular materials”, Alessandro Tengattini.

Bruno Chareyre attended and presented in the InterPore 10th Annual Meeting and Jubilee which took place in New Orleans from May 14th-17th, 2018.

microtomacro2018

Group photo of Micro to macro Mathematical Modelling in Soil Mechanics conferece

People


Ivan Deiros has defended the 2nd of May, 2018. His PhD entitled “A Multi-scale study of the degradation of railway ballast” was supervised by Gaël Combe, Fabrice Emeriault, Charles Voivret and Jean-François Ferellec.

Robert Caulk, PhD student at University of California San Diego, has been selected as a recipient of a Chateaubriand Fellowship supported by the Make Our Planet Great Again Initiative. Robert is a developer and active member of the Yade-dem.org community. This grant will cover a 9-month stay in Grenoble for further collaborative efforts in relation to micro-hydro-mechanical couplings.

 

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Grenoble Geomechanics Newsletter-no.21

This is the 21th edition of the GéoMécanique newsletter. It was desperately expected by many since the last issue was in November 2017. As usual it contains the latest news regarding research publications, conference visits and other activities of the staff and students from the GéoMécanique group of Laboratoire 3SR (Sols, Solides, Structures – Risques). This time, however, it is not prepared and conveyed to you by Chao Yuan (see “People” section).

If you have something you want to share, please don’t hesitate to contact us at: geomecanique.newsletter|AT|3sr-grenoble.fr. Please feel free to forward the letter to colleagues and friends, and let them know that they can subscribe by themselves here. Enjoy.

We are proud of our new official group photo

People

Chao Yuan left the lab after five years of good research. He is now in Calgary as a Post-Doc in the group of Richard Wan, and continuously trying to make progresses in the modeling of multiphase problems – without freezing. Word of the PhD director B. Chareyre: “I miss him BADLY! Why did he leave?”.
Chao was managing this Newsletter since the first issue and for this alone he deserves many thanks. Ciao Chao.

Frédéric Donzé moved from the group and from Laboratoire 3SR to go next-door to ISTerre, taking Alexandra Tsopela with him for more géo-adventures.

Eleni Stavropoulou joined the Geomechanics Team as a Post-Doc working with Christophe Dano on the interface behaviour of soft rocks and grout applied to off-shore piles design.

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Grenoble Geomechanics Newsletter-no.20

This is the 20th edition of the GéoMécanique newsletter. It contains the latest news regarding research publications, conference visits and other activities of the staff and students from the GéoMécanique group of Laboratoire 3SR (Sols, Solides, Structures – Risques). If you have something you want to share, please don’t hesitate to contact us at: geomecanique.newsletter|AT|3sr-grenoble.fr. Please feel free to forward the letter to colleagues and friends, and let them know that they can subscribe by themselves here. Enjoy.

Honors, Awards and Invitations

Cino Viggiani has been elected as the new president of ALERT-Geomaterials (for the next three years).

Award for “one of the best papers published in Geosynthetics International in 2016″ for the following paper : J. Górniak, P. Villard and P. Delmas (2016). Coupled discrete and finite-element modelling of geosynthetic tubes filled with granular material, Geosynthetics International, 23, No. 5, 362-380. Continue reading

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Grenoble Geomechanics Newsletter-no.19

This is the 19th edition of the GéoMécanique newsletter. It contains the latest news regarding research publications, conference visits and other activities of the staff and students from the GéoMécanique group of Laboratoire 3SR (Sols, Solides, Structures – Risques). If you have something you want to share, please don’t hesitate to contact us at: geomecanique.newsletter|AT|3sr-grenoble.fr. Please feel free to forward the letter to colleagues and friends, and let them know that they can subscribe by themselves here. Enjoy.

People

Zeynep successfully defended her PhD at the University of Edinburgh on the 4th of September with Florian Fusseis and Matthew Coop as assessors. The title of her thesis is “A study of temporal and spatial evolution of deformation and breakage of dry granular materials using x-ray computed tomography and the discrete element method” and it will be available online by the end of December. Well done Zeynep!

Alice Di Donna is the latest addition to our team. She has obtained a position of “Maitre de Conférences” (Assistant Professor) at Université Grenoble Alpes, effective since September 1st 2017. Alice obtained a Masters degree at UJF Grenoble and Politecnico di Torino back in 2009, then a PhD at EPFL, Switzerland, in 2014. After that, she performed a postdoc at the Politecnico di Torino and worked at the same time as a professional engineer at Teknema Progetti srl in Torino. Welcome Alice! Continue reading

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Grenoble Geomechanics Newsletter-no.18

This is the 18th edition of the GéoMécanique newsletter. It contains the latest news regarding research publications, conference visits and other activities of the staff and students from the GéoMécanique group of Laboratoire 3SR (Sols, Solides, Structures – Risques). If you have something you want to share, please don’t hesitate to contact us at: geomecanique.newsletter|AT|3sr-grenoble.fr. Please feel free to forward the letter to colleagues and friends, and let them know that they can subscribe by themselves here. Enjoy.

Visits and conferences

A number of people went to the International Workshop of Bifurcation and Degradation in Geomaterials (IWBDG2017) in Lemesos (Limassol) in Cyprus, starting with a keynote on localisation precursors from Jacques Desrues, and a large number of full-field experimental results on sand, sandstone, clayrocks, tuffeau…

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Grenoble Geomechanics Newsletter-no.17

This is the 17th edition of the GéoMécanique newsletter. It contains the latest news regarding research publications, conference visits and other activities of the staff and students from the GéoMécanique group of Laboratoire 3SR (Sols, Solides, Structures – Risques). If you have something you want to share, please don’t hesitate to contact us at: geomecanique.newsletter@3sr-grenoble.fr. Please feel free to forward the letter to colleagues and friends, and let them know that they can subscribe by themselves here. Enjoy.

Research projects

On March 27, took place the first meeting of the REGIC project (REnforcement par Géosynthétique Intelligent sur Cavités naturelles ou anthropiques) financed in the framework of the call for project ADEME (Investissement d’avenir, Route du futur) in which the 3SR laboratory is strongly involved. The partners of this project are INERIS, Texinov and 3SR (Fabrice Emeriault and Pascal Villard). There are an experimental part (small scale laboratory tests at INERIS and true scale experiments) and a numerical part supported by the 3SR (DEM modelling of the reinforcement of cohesive embankments by geosynthetics). A funding of 250 k€ has been allocated to the 3SR laboratory for the financial supports of a PHD, a post-doc and for the development of the numerical model . The PHD proposal is currently being finalized and will soon be released. Continue reading

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Grenoble Geomechanics Newsletter-no.16

This is the 16th edition of the GéoMécanique newsletter. It contains the latest news regarding research publications, conference visits and other activities of the staff and students from the GéoMécanique group of Laboratoire 3SR (Sols, Solides, Structures – Risques). If you have something you want to share, please don’t hesitate to contact us at: geomecanique.newsletter@3sr-grenoble.fr. Please feel free to forward the letter to colleagues and friends, and let them know that they can subscribe by themselves here. Enjoy.

Publications

The paper “Intensity and volumetric characterizations of hydraulically driven fractures by hydro-mechanical simulations” by E. Papachristos, L. Scholtès, FV. Donzé and B. Chareyre has been accepted in the International Journal of Rock Mechanics and Mining Sciences (http://www.sciencedirect.com/science/article/pii/S136516091730076X).

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Grenoble Geomechanics Newsletter-no.15

The 15th edition of the GéoMécanique newsletter is brought to you by Chao Yuan. It contains the latest news regarding research publications, conference visits and other activities of the staff and students from the GéoMécanique group of Laboratoire 3SR (Sols, Solides, Structures – Risques). If you have something you want to share, please don’t hesitate to contact us at: geomecanique.newsletter@3sr-grenoble.fr. Please feel free to forward the letter to colleagues and friends, and let them know that they can subscribe by themselves here. Enjoy.

Honors, Awards and Invitations

Dorjan Dauti (thesis Tec21, supervised by S.Dal Pont) received the 1st prize award in the Empa PhD Symposium. Dorjan’s thesis is in collaboration with the EMPA of Zurich in Switzerland.

He said, “The event is called Empa PhD Symposium. It is an event organized once a year where PhD students from 30 labs at Empa (Swiss Federal Laboratories for Material Science and Technology) present their research work, either by a poster or an oral presentation. I attended with a poster and my poster was ranked 1st from the experts who are research scientists here at Empa. It is the first time that a participant from the Structural Engineer Lab (the lab which I belong here) wins an award in this symposium. The one handling the price in the photo is the director of Empa, Prof. Dr. Gian-Luca Bona…Continue reading

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Grenoble Geomechanics Newsletter-no.14

The 14th edition of the GéoMécanique newsletter is brought to you by Chao Yuan. It contains the latest news regarding research publications, conference visits and other activities of the staff and students from the GéoMécanique group of Laboratoire 3SR (Sols, Solides, Structures – Risques). If you have something you want to share, please don’t hesitate to contact us at: geomecanique.newsletter@3sr-grenoble.fr. Please feel free to forward the letter to colleagues and friends, and let them know that they can subscribe by themselves here. Enjoy.

Publications

A wonderful book…
A Christmas gift for your supervisor…
For everybody that has some difficulties to sleep…
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Grenoble Geomechanics Newsletter-no.13

The 13th edition of the GéoMécanique newsletter is brought to you by Chao Yuan. It contains the latest news regarding research publications, conference visits and other activities of the staff and students from the GéoMécanique group of Laboratoire 3SR (Sols, Solides, Structures – Risques). If you have something you want to share, please don’t hesitate to contact us at: geomecanique.newsletter@3sr-grenoble.fr. Please feel free to forward the letter to colleagues and friends, and let them know that they can subscribe by themselves here. Enjoy.

Publications

The paper “Role of blockages in particle transport through homogeneous granular assemblies” by Ignacio G. Tejada, Luc Sibille and Bruno Chareyre as been recently accepted in Europhysics Letters (EPL), it follows, namely, the postdoc of Ignacio supported by the Labex TEC21. Continue reading

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