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CONTRIBUTION A L'ETUDE DES ELASTOMERES ET DES MEMBRANES SOUFFLEES

Abstract : In the present work, two complementary aspects of the mecanical modeling of rubber-like matérials are examined. The first one concerns the choice in the constitutive model for such materials, the second one concerns the development of a specific finite element in order to model inflation of elastomeric membranes.
After a brief description of the particular mecanical properties of these materials, a identification procedure of the material parameters is proposed. For this purpose, a specific numerical tool is developped. It allows material parameters identification taking into account different load cases simultaneously. One of the original features of this work is the use of genetic algorithms and a objet-oriented-like programing. With this tool, a classification of the relevance of different hyperelastic materials found in the bibliography has been performed.
Attention has been given on the construction of a new model for the Mullins effect. The phenomenon induices stress-softening during the first load cycles and is typical of rubber-like materials. Based on physical point of views, a modification of the eight-chains model is proposed in order to model changes in network caracteristics.
Finally, comparison of models is performed through structural examples made of inflated membranes. A finite element has been developped using B-spline interpolation in order to study the non-linear responses of simple axisymetrical structures. The comparison of recent statistically based models is performed to point out influence of the choice of the contitutive model in the global response of the structure.
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https://tel.archives-ouvertes.fr/tel-00011650
Contributor : Gilles Marckmann <>
Submitted on : Monday, February 20, 2006 - 6:36:55 PM
Last modification on : Monday, March 25, 2019 - 4:24:08 PM
Long-term archiving on: : Monday, September 17, 2012 - 12:06:14 PM

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  • HAL Id : tel-00011650, version 1

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Gilles Marckmann. CONTRIBUTION A L'ETUDE DES ELASTOMERES ET DES MEMBRANES SOUFFLEES. Mécanique [physics.med-ph]. Ecole Centrale de Nantes (ECN); Université de Nantes, 2004. Français. ⟨tel-00011650⟩

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