Guillaume Puel

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Still today, some of the phenomena which occur in structural dynamics cannot be described, even using a properly updated model: some uncertainties remain. This paper presents the basic concepts of a new theory which uses the concept of Lack of Knowledge (LOK) to model the uncertainty using two bounds of the energy in each substructure. The inverse problem,(More)
This paper deals with the structural modeling of a family of similar, actual structures taking into account uncertainties and modeling errors. Only errors of the ”structural stiffness” type are considered. We develop a new theory in which what we call the Lack Of Knowledge (LOK) is defined through an internal variable, whose upper and lower bounds are(More)
With the increasing interplay between experimental and computational approaches at multiple length scales, new research directions are emerging in materials science and computational mechanics. Such cooperative interactions find many applications in the development, characterization and designof complexmaterial systems.This manuscript provides a broad and(More)
Rubber bushings are extensively-used linking parts in a vehicle chassis that allow to filter noise and vibration. They influence much, however, the transient behaviour of the vehicle, such as its steering performance. Therefore building a multibody simulation with a relevant description of the rubber bushings is useful to describe the significant(More)
The quantification of the quality of a structural dynamical model remains a major issue today, and increasingly numerous methods are being devised in order to validate a model by comparison with an experimental reference. This paper presents a theory based on the concept of Lack Of Knowledge, which consists in globalizing the various sources of errors on(More)
Background Context Material fatigue is one of the key phenomena whose study is essential to design and develop modern industrial parts: many of the classical methods used in the industry, such as those described in Ref. [1], allow to estimate fatigue life through cumulative formulas. However, these latter do not take into account the history associated with(More)
1 LMT-Cachan (ENS Cachan/CNRS/Paris 6 University) 61 av du Président Wilson, 94235 Cachan Cedex, France {pierre.ladeveze,paul.enjalbert}@lmt.ens-cachan.fr 2 EADS Foundation Chair Advanced Computational Structural Mechanics 3 LMSSMat (École Centrale Paris/CNRS) Grde Voie des Vignes, 92295 Châtenay-Malabry Cedex, France guillaume.puel@ecp.fr 4 EADS Space(More)
We address here the case of electron-matter elastic interaction as it occurs in Transmission Electron Microscopy (TEM) experiments. In the forward problem, we show that it is possible to derive the scattered electron wave function as the solution of a Helmholtz equation. This equation depends on the spatial potential associated with the analyzed sample, and(More)