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Communication Dans Un Congrès Année : 2020

Numerical investigation on cruciform composite shape for the biaxial characterization test

Résumé

Composite materials are nowadays widely used in the industrial field. To mechanically characterize these materials, an in-plane biaxial test can be performed on cruciform specimen instead of using multiple classical tests. One of the major problems that limits the use of the biaxial test is the shape of the cruciform specimen. Depending on the mechanical behavior to characterize (elastic, hardening, yield criterion, limit strains…), very different specimen shapes have been proposed in the last few decades mainly for the study of metallic alloys. Results presented here lie within a more scope which is the rupture behavior characterization of composite materials subjected to complex loadings (linear and non-linear strain paths at different strain rates). The objective of this study is to define the dimensions of a constant thickness in-plane cross specimen made from glass fiber reinforced polymer (GFRP) plate. In this paper, three different shapes already presented in the literature are chosen and adapted to propose a new concept of composite specimen with aluminum tabs. The potential of these three specimens is evaluated by means of a numerical finite element investigation. The best specimen shape with the maximum stresses and strains in the central zone of the specimen is then selected. © CCM 2020 - 18th European Conference on Composite Materials. All rights reserved.
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Dates et versions

hal-03103522 , version 1 (08-01-2021)

Identifiants

  • HAL Id : hal-03103522 , version 1

Citer

A. Kobeissi, Lionel Leotoing, Dominique Guines, P. Rahme. Numerical investigation on cruciform composite shape for the biaxial characterization test. 18th European Conference on Composite Materials, ECCM 2018, Jun 2018, Athens, Greece. ⟨hal-03103522⟩
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