Finite element investigation of “cradle tests” for the mechanical characterization of pultruded rods under compression

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Abstract

The development of hierarchical composites using pultruded rods as a primary building block is ongoing. These new composites, thanks to the nature of their constituent, offer more freedom of design as three-dimensional structures compared to the two-dimensional layer-by-layer composites. Getting a good understanding, and therefore characterisation of these building blocks becomes crucial before using them in hierarchical structures. However, it is expensive to perform many tests by following a trial-and-error approach. Modelling those tests therefore becomes useful as it allows the users to get a first estimation of the possible output of an experiment. These models are even more crucial when they aim to represent the complex behaviour of a system, as is the case with compression of Fibre Reinforced Polymers (FRPs): the shear instability, the buckling, twisting and rotations resulting from compression loads are not trivial to predict, neither are the limitations of the test method used. A model of a modified four-point bend test is presented, with its limits as well as its potential for improvement.
Original languageEnglish
Title of host publicationProceedings of 21st European Conference on Composite Materials
PublisherThe European Society for Composite Materials (ESCM) and the Ecole Centrale de Nantes
Pages836-843
Number of pages8
Volume8
ISBN (Print)978-2-912985-01-9
DOIs
Publication statusPublished - 5 Jul 2024

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    Trask, R. S. (Principal Investigator)

    1/07/2030/06/25

    Project: Research, Parent

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