Publications

Mathematics

On wave based weak Trefftz discontinuous Galerkin approach for medium-frequency heterogeneous Helmholtz problem

Medium frequency heterogeneous Helmholtz problem gives rise to severe numerical challenge to Finite Element Method (FEM). An extended Variational Theory of Complex Rays (VTCR) is developed for solving this problem. Since VTCR is kind of Trefftz…

Hao Li, Pierre Ladevèze, Hervé Riou

Computer Methods in Applied Mechanics and Engineering - 2017

Mechanics of materials

γ′-Rafting mechanisms under complex mechanical stress state in Ni-based single crystalline superalloys

The morphological evolution of the γ′ precipitates has been studied in a second generation nickel-based single crystal superalloy during isothermal creep straining at 1093 °C under multiaxial stress state. For this purpose, a specific V-shaped…

Vincenzo Caccuri, Jonathan Cormier, Rodrigue Desmorat

Materials & Design - 2017

Mechanics of materials

A tensorial thermodynamic framework to account for the γ ' rafting in nickel-based single crystal superalloys

A new model is developed in order to account for the effect of microstructural degradation (i.e. precipitate-directional-coarsening) on the viscoplastic behavior of single crystal superalloys under high temperature exposure. Microstructural changes…

Rodrigue Desmorat, A. Mattiello, J. Cormier

International Journal of Plasticity - 2017

Engineering Sciences

Miniaturization of Compensational Spring System using the Highly Nonlinear Curved beams in MEMS

In this work an approach to minimize a non-linear system with a flat region in the force-displacement characteristics is studied. Design, simulation, fabrication and characterization of the initial system with the linear compensational spring and…

Bogdan Vysotskyi, Denis Aubry, Philippe Gaucher, Elie Lefeuvre, Xavier Le Roux, Fabien Parrain

28th Micromechanics and Microsystems Europe Workshop - 2017

Engineering Sciences

Ground motion simulations of great earthquakes on the Alpine Fault: effect of hypocentre location and comparison with empirical modelling

Brendon Bradley, Sung Bae, Viktor Polak, Robin Lee, Ethan Thomson, Karim Tarbali

New Zealand Journal of Geology and Geophysics - 2017

Materials Science

Thermo-mechanical behavior of clays explained from the nanoscale

Laurent Brochard, Tulio Honorio, Matthieu Vandamme, Ioannis Stefanou, Siavash Ghabezloo, Michel Bornert, Michaël Peigney

6th International Conference on Coupled THMC Processes in Geosystems - 2017

Engineering Sciences

Microscopic swelling analysis of spruce wood in sorption cycle

C. El Hachem, Kamilia Abahri, R. Bennacer

ICOME'16 – International Conference on Materials & Energy 2016 - 2016

Géotechnique

Highlighting some mechanisms of crack formation and propagation in clays on drying path

The objective of this research was to analyse the formation and propagation of cracks related to desiccation in clay and to provide a better understanding of the behaviour of two clays, a kaolinite, and a mixture of kaolinite and montmorillonite. At…

X. Wei, M. Hattab, P. Bompard, J.-M. Fleureau

Geotechnique - 2016

Sciences of the Universe

PLANET TOPERS: Planets, Tracing the Transfer, Origin, Preservation, and Evolution of their ReservoirS

V. Dehant, D. Asael, R. Baland, B. Baludikay, J. Beghin, J. Belza, M. Beuthe, D. Breuer, S. Chernonozhkin, Ph. Claeys, Y. Cornet, L. Cornet, A. Coyette, V. Debaille, C. Delvigne, M. Deproost, N. de Winter, C. Duchemin, F. El Atrassi, C. François, J. de Keyser, C. Gillmann, E. Gloesener, S. Goderis, Y. Hidaka, D. Höning, M. Huber, G. Hublet, E. Javaux, Ö. Karatekin, J. Kodolanyi, L. Lobo Revilla, L. Maes, R. Maggiolo, N. Mattielli, M. Maurice, S. Mckibbin, A. Morschhauser, W. Neumann, L. Noack, L. Pham, L. Pittarello, A. Plesa, A. Rivoldini, S. Robert, P. Rosenblatt, T. Spohn, J. -Y. Storme, N. Tosi, A. Trinh, M. Valdes, A. Vandaele, F. Vanhaecke, T. van Hoolst, N. van Roosbroek, V. Wilquet, M. Yseboodt

Origins of Life and Evolution of Biospheres - 2016

Engineering Sciences

Computable upper and lower bounds on eigenfrequencies

This paper is a revisit of the work [Ladevèze and Pelle, Int. J. Numer. Methods Engrg. 28 (1989)] where the goal here is to acquire guaranteed, accurate and computable bounds of eigenfrequencies through post-processing of conventional finite element…

Li Wang, Ludovic Chamoin, Pierre Ladevèze, Hongzhi Zhong

Computer Methods in Applied Mechanics and Engineering - 2016