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Theses

Modèles continus et "discrets" pour les problèmes de localisation et de rupture fragile et/ou ductile

Abstract : The objective of the thesis is to develop a finite element method capable of taking into account the development of localization zones without pathological dependence on mesh discretization. This is achieved by the development of elements taking into account discontinuities of the displacement field. The method allows to describe the behavior of massive structures by combining two types of dissipation: a bulk dissipation generated by diffuse phenomenon at the scale of the structure and taken into account by a classical continuum model and a surfacic dissipation genarated by the apparition of localized dissipative phenomenon localized at the level of localization zones and taken into account by the introduction of discontinuous displacement field associated to discrete laws linking traction and displacement jump. This method has been developed and implemented for plasticity model (representation of shear bands) and for damage materials (representation of "macro cracks" ).
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https://tel.archives-ouvertes.fr/tel-00132116
Contributor : Ens Cachan Bibliothèque <>
Submitted on : Tuesday, February 20, 2007 - 12:38:12 PM
Last modification on : Tuesday, October 6, 2020 - 8:22:03 AM
Long-term archiving on: : Tuesday, April 6, 2010 - 9:27:39 PM

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  • HAL Id : tel-00132116, version 1

Citation

Delphine Brancherie. Modèles continus et "discrets" pour les problèmes de localisation et de rupture fragile et/ou ductile. Mécanique [physics.med-ph]. École normale supérieure de Cachan - ENS Cachan, 2003. Français. ⟨tel-00132116⟩

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