Concept

Mécanique (science)

Publications associées (129)

Compression Tests on a Sandy Silt at Different Suction and Temperature Levels

Lyesse Laloui, Bertrand François, Simon Salager, David Ubals Picanyol

This paper presents a unified thermo-mechanical experimental study on a remoulded unsaturated sandy silt and brings a contribution to the understanding of the fundamental mechanics of unsaturated soils in non- isothermal conditions. The experimental progra ...

2007

LTCC ultra high isostatic pressure sensors

Peter Ryser, Thomas Maeder, Yannick Sébastien Fournier, Niklaus Johner, Bamdad Afra

Piezoresistive pressure sensors using classical deformable structures such as membranes progressively run into difficulties at very high pressures (above 1 to 2 kbar), due to the decreasing ratio between the available sensing strain on the outer membrane s ...

2007

A predictive mechanism for dynamic strain ageing in aluminium-magnesium alloys

William Curtin

Dynamic strain ageing (DSA) is the phenomenon in which solute atoms diffuse around dislocations and retard dislocation motion, leading to negative strain-rate sensitivity (nSRS) and thus to material instabilities during processing, an important issue in co ...

2006

Zum Tragverhalten von zugbeanspruchten Bauteilen aus Ultra-Hochleistungs-Faserbeton

Jörg Jungwirth

Ultra-High Performance Fiber-Reinforced Concrete (UHPFRC) can be considered, due to its high strength and improved durability, as one of the leading recent innovations in civil engineering. Material scientists have developed a very efficient, high-tech mat ...

EPFL2006

Real-time reduced basis solutions for Navier-Stokes equations: optimization of parametrized bypass configurations

Gianluigi Rozza

The reduced basis method on parametrized domains is applied to approximate blood flow through an arterial bypass. The aim is to provide (a) a sensitivity analysis for relevant geometrical quantities of interest in bypass configurations and (b) rapid and re ...

2006

Bond-order-modulated staggered-flux phase of thetJmodel on a square lattice

Frédéric Mila, Cédric Weber

Motivated by the observation of inhomogeneous patterns in some high-Tc cuprate compounds, several variational Gutzwiller-projected wave functions with built-in charge and bond-order parameters are proposed for the extended t−J−V model on the square lattice ...

2006

A unified electrostatic and cavitation model for first-principles molecular dynamics in solution

Nicola Marzari, Matteo Cococcioni, François Gygi

The electrostatic continuum solvent model developed by [Fattebert and Gygi J. Comput. Chem. 23, 662 (2002); Int. J. Quantum Chem. 93, 139 (2003)] is combined with a first-principles formulation of the cavitation energy based on a natural quantum-mechanical ...

2006

Stabilized Mixed Finite Element Formulations for Materially Nonlinear Partially Saturated Media

Standard and enhanced (BBAR or EAS) low order finite elements applied to the problem of consolidation of two-phase nonlinear continua do not satisfy the LBB condition when the same interpolation functions are used for both displacement and pore pressure fi ...

2006

Quantum mechanical/molecular mechanical (QM/MM) Car-Parrinello simulations in excited states

Ursula Röthlisberger, Ivano Tavernelli, Enrico Marko Tapavicza, Leonardo Guidoni, Marc-Etienne Moret

The combination of time-dependent d. functional theory (TDDFT) for the description of excited states with a hybrid quantum mechanics/mol. mechanics (QM/MM) approach enables the study of photochem. processes in complex environments. Here, we present a short ...

2005

Optical properties of molecules in solution via hybrid TDDFT/MM simulations

Ursula Röthlisberger

The optical properties of mols. in complex environments were studied within hybrid time-dependent d. functional theory / mol. mechanics (TDDFT/MM) simulation studies. The potential energy surface in the excited state is described within time-dependent d. f ...

2005

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