Concept

Mécanique analytique

Publications associées (151)

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A global collisionless PIC code in magnetic coordinates

Olivier Sauter, Laurent Villard, Kurt Appert, Trach-Minh Tran, Alberto Bottino, Sébastien Jolliet, Ben McMillan, Paolo Angelino

A global plasma turbulence simulation code, ORB5, is presented. It solves the gyrokinetic electrostatic equations including zonal flows in axisymmetric magnetic geometry. The present version of the code assumes a Boltzmann electron response on magnetic sur ...

Elsevier2007

Discrete choice models with multiplicative error terms

Michel Bierlaire

We propose a multiplicative specification of a discrete choice model that renders choice probabilities independent of the scale of the utility. The model outperforms the classical additive formulation over a range of data sets. ...

2007

Multiphysical Brushless DC Motor Optimization Process

Yves Perriard, Miroslav Markovic

An original analytical determination of the force acting on the moving coil in an electromagnetic actuator is presented. The actuator magnetic field is solved analytically using the Schwarz-Christoffel (SC) mapping. The SC integral is solved analytically u ...

2006

Large atoms and quantum dots

Claude Plocek

A functional integration approach – whose main ingredient is the Hubbard-Stratonovich transformation – for the quantum nonrelativistic many-fermion problem is investigated. With this method, the ground state energy correponds to a systematic expansion in p ...

EPFL2006

Modeling and control of TCV

Jonathan Bryan Lister

A new approach to the modeling and control of tokamak fusion reactors is presented. A nonlinear model is derived using the classical arguments of Hamiltonian mechanics and a low-order linear model is derived from it. The modeling process used here addresse ...

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

Global and local linear buckling behavior of a chiral cellular structure

Alessandro Spadoni

This paper investigates the flat-wise compression behavior of an innovative cellular structure configuration. The considered layout has a hexagonal chiral geometry featuring cylinders, or nodes, joined by ligaments, or ribs. The resulting assembly is chara ...

2005

A Variational Definition of Electrostatic Potential Derived Charges

Ursula Röthlisberger

In a recent work [Laio, A., VandeVondele, J., Rothlisberger, U. J. Phys. Chem. B 2002 106, 7300] a novel method has been proposed to define dynamical electrostatic potential derived (D-RESP) charges for systems described within a quantum mechanics/mol. mec ...

2004

Characteristics, modeling and simulation of a traveling wave ultrasonic linear motor

Yves Perriard, José Fernandez Lopez

This paper is related to the characteristics of a traveling wave ultrasonic linear motor. After a brief state of the art of this type of motor, the working principle is presented. Then, to describe analytically the phenomena existing, a theoretical model i ...

2004

Interaction potential and hopping dynamics governing sliding friction

Harald Brune

The friction force on a nanometer-sized tip sliding on a surface is related to the thermally activated hopping of the contact atoms on an effective atomic interaction potential. A general analytical expression relates the height of this potential and the h ...

2003