Daouadji, Ali Jrad, Mohamad Prunier, Florent Sibille, Luc Nicot, François Laouafa, Farid Darve, Félix

The question of divergence instability and diffuse failure, which is a common failure mode for granular materials like soils, is tackled here from an experimental, theoretical and numerical perspective. The necessary condition of instability as given by the loss of definite-positiveness of the elasto-plastic matrix (the so-called 'second order work...

Daouadji, Ali Jrad, Mohamad Prunier, Florent Sibille, Luc Nicot, François Laouafa, Farid Darve, Félix

The question of divergence instability and diffuse failure, which is a common failure mode for granular materials like soils, is tackled here from an experimental, theoretical and numerical perspective. The necessary condition of instability as given by the loss of definite-positiveness of the elasto-plastic matrix (the so-called 'second order work...

Daouadji, Ali Jrad, Mohamad Prunier, Florent Sibille, Luc Nicot, François Laouafa, Farid Darve, Félix

The question of divergence instability and diffuse failure, which is a common failure mode for granular materials like soils, is tackled here from an experimental, theoretical and numerical perspective. The necessary condition of instability as given by the loss of definite-positiveness of the elasto-plastic matrix (the so-called 'second order work...

Baptistelli, Patricia H. Manoel, Miriam Garcia

This work is concerned with dynamical systems in presence of symmetries and reversing symmetries. We describe a construction process of subspaces that are invariant by linear Gamma-reversible-equivariant mappings, where Gamma is the compact Lie group of all the symmetries and reversing symmetries of such systems. These subspaces are the sigma-isoty...

Bueno, Atila Madureira Balthazar, Jose Manoel Castilho Piqueira, Jose Roberto

Since the mid 1980s the Atomic Force Microscope is one the most powerful tools to perform surface investigation, and since 1995 Non-Contact AFM achieved true atomic resolution. The Frequency-Modulated Atomic Force Microscope (FM-AFM) operates in the dynamic mode, which means that the control system of the FM-AFM must force the micro-cantilever to o...

Daouadji, Ali Jrad, Mohamad Prunier, Florent Sibille, Luc Nicot, François Laouafa, Farid Darve, Félix

The question of divergence instability and diffuse failure, which is a common failure mode for granular materials like soils, is tackled here from an experimental, theoretical and numerical perspective. The necessary condition of instability as given by the loss of definite-positiveness of the elasto-plastic matrix (the so-called 'second order work...

Daouadji, Ali Jrad, Mohamad Prunier, Florent Sibille, Luc Nicot, François Laouafa, Farid Darve, Félix

The question of divergence instability and diffuse failure, which is a common failure mode for granular materials like soils, is tackled here from an experimental, theoretical and numerical perspective. The necessary condition of instability as given by the loss of definite-positiveness of the elasto-plastic matrix (the so-called 'second order work...

Baptistelli, Patricia H. Manoel, Miriam Garcia

This work is concerned with dynamical systems in presence of symmetries and reversing symmetries. We describe a construction process of subspaces that are invariant by linear Gamma-reversible-equivariant mappings, where Gamma is the compact Lie group of all the symmetries and reversing symmetries of such systems. These subspaces are the sigma-isoty...

Pardo, Rosa Luiz Pereira, Antonio Sabina de Lis, Jose C.

FEDER

Pardo, Rosa Luiz Pereira, Antonio Sabina de Lis, Jose C.

FEDER