Concept

Covariant formulation of classical electromagnetism

Publications associées (46)

3D FEM simulation of the flow forming process using lagrangian and ALE methods

The process of flow forming is numerically modeled using finite element codes based on the Forge2005® software. Two numerical approaches are considered. The first one uses an updated Lagrangian formulation. The problem is solved with help of a self-contact ...

2007

Theory of atomic-scale dielectric permittivity at insulator interfaces

Alfredo Pasquarello

We develop a theory for investigating atomic-scale dielectric permittivity profiles across interfaces between insulators. A local susceptibility chi(x;omega) is introduced to describe variations of the dielectric response over length scales of the order of ...

2005

Constitutive modelling of the thermo-plastic behaviour of soils

Lyesse Laloui, Bertrand François, Cane Cekerevac

Research interest in the thermo-mechanical behaviour of soils is growing as a result of an increasing number of geomechanical problems involving thermal effects. This paper addresses various issues concerning the thermo-mechanical behaviour of soils. Start ...

2005

Dislocation multiplication rate in the early stage of germanium plasticity

Jean-Luc Martin, Corinne Dupas

A set of constitutive equations describing the plasticity of semiconductors is compared with the results of mechanical tests. Constant strain-rate compression tests are interrupted before the peak of the initial multiplication yield point, i.e. at the mome ...

2005

Magnetic triggering of ELMs in TCV

Yves Martin, Laurent Villard, Jonathan Bryan Lister

Experiments on the TCV tokamak have shown that rapid vertical movement of diverted ELMy H-mode plasmas can affect the time sequence of edge localized modes. The effect is attributed to the induction of an edge current during the movement of the plasma colu ...

2003

On algebraic extra-stress models for the simulation of viscoelastic flows

Michel Deville, Gilmar Mompean

A methodology is presented for the formulation of an algebraic extra-stress model derivable from the Oldroyd-B constitutive equation for a viscoelastic fluid. An implicit algebraic tensor relation is derived directly from the differential constitutive rela ...

1998

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