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The aim of the present study was to predict damage to masonry by combining structural analysis and homogenization methods. In the case of a masonry structure composed of bricks and mortar, a third material is assumed to exist, which is a mixture of the two materials sandwiched between the other two. This new layer has a small thickness, a low stiffness and(More)
  • F. Lebon
  • Simulation Modelling Practice and Theory
  • 2003
This article deals with the modeling and the numerical simulation of contact and friction problems. Some friction formulations are proposed and numerical methods of resolution by finite elements are presented. Two methods are more particularly developed. The first one is based on a formulation using displacements and the second one is based on a mixed(More)
Radar images are inherently degraded by a strong, multiplicative noise known as speckle. The most frequently used speckle filters are adaptive in the sense that the filtering operation depends on estimations of local statistics calculated on a neighbourhood of the considered pixel. The choice of the neighbourhood is consequently an important issue. In this(More)
The aim of this work is to evaluate the efficiency of the local defect correction multigrid method (Hackbusch, 1984) on solid mechanics test cases inducing local singularities and derived from an industrial context. The levels of local refinement are recursively automatically obtained thanks to the Zienkiewicz and Zhu a posteriori error estimator.(More)
The aim of the present work is to propose a new micro-mechanical model in the context of the deductive approach used to derive interface models. This model, based on a previous study introduced previously by A. Rekik and F. Lebon [31, 32], is used to reproduce the damage in masonry by combining structural analysis and homogenization methods. The focal point(More)
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