Experimental in-plane characterization of a cellular material composed by a cell with a normal re-entrant link and geometrical parameters effects on the structure mechanical properties

Autor: Mustapha Bouakba, Valéry Valle, Mourad Boukhatem, Toufik Benmansour
Přispěvatelé: Institut Pprime (PPRIME), ENSMA-Centre National de la Recherche Scientifique (CNRS)-Université de Poitiers, Photomécanique et analyse expérimentale en Mécanique des solides (PEM), Département Génie Mécanique et Systèmes Complexes (GMSC), ENSMA-Centre National de la Recherche Scientifique (CNRS)-Université de Poitiers-ENSMA-Centre National de la Recherche Scientifique (CNRS)-Université de Poitiers-Institut Pprime (PPRIME), ENSMA-Centre National de la Recherche Scientifique (CNRS)-Université de Poitiers-ENSMA-Centre National de la Recherche Scientifique (CNRS)-Université de Poitiers
Jazyk: angličtina
Rok vydání: 2019
Předmět:
Rapid prototyping
0209 industrial biotechnology
Materials science
Auxetics
Image correlation
Laser cutting
Marker tracking technique
[PHYS.MPHY]Physics [physics]/Mathematical Physics [math-ph]
Rotational symmetry
Aerospace Engineering
02 engineering and technology
computer.software_genre
Industrial and Manufacturing Engineering
[SPI.AUTO]Engineering Sciences [physics]/Automatic
020901 industrial engineering & automation
[PHYS.QPHY]Physics [physics]/Quantum Physics [quant-ph]
Ultimate tensile strength
Computer Aided Design
Cell structure
[PHYS.MECA.MEFL]Physics [physics]/Mechanics [physics]/Fluid mechanics [physics.class-ph]
[PHYS.MECA.BIOM]Physics [physics]/Mechanics [physics]/Biomechanics [physics.med-ph]
[SPI.ACOU]Engineering Sciences [physics]/Acoustics [physics.class-ph]
[PHYS.MECA.VIBR]Physics [physics]/Mechanics [physics]/Vibrations [physics.class-ph]
Composite structures
Isochoric process
Mechanical Engineering
Applied Mathematics
[SPI.FLUID]Engineering Sciences [physics]/Reactive fluid environment
Mathematical analysis
[SPI.NRJ]Engineering Sciences [physics]/Electric power
General Engineering
[CHIM.MATE]Chemical Sciences/Material chemistry
[PHYS.MECA.MSMECA]Physics [physics]/Mechanics [physics]/Materials and structures in mechanics [physics.class-ph]
[PHYS.MECA.ACOU]Physics [physics]/Mechanics [physics]/Acoustics [physics.class-ph]
In plane
[SPI.ELEC]Engineering Sciences [physics]/Electromagnetism
[CHIM.POLY]Chemical Sciences/Polymers
Sandwich panels
Automotive Engineering
[PHYS.MECA.THER]Physics [physics]/Mechanics [physics]/Thermics [physics.class-ph]
computer
Zdroj: Journal of the Brazilian Society of Mechanical Sciences and Engineering
Journal of the Brazilian Society of Mechanical Sciences and Engineering, Springer Verlag, 2019, 41 (1), ⟨10.1007/s40430-018-1528-3⟩
ISSN: 1678-5878
1806-3691
DOI: 10.1007/s40430-018-1528-3⟩
Popis: In this work, we have characterized a cellular structure constituted by a new cell on which we carried out, initially, tensile and shear tests in order to get its in-plane mechanical properties; in the second time, we explored the effects that geometry will have on these mechanical properties by varying the geometric parameters of the cell. The specimens were designed by $${\text{Computer Aided Design }}$$ software and obtained by rapid prototyping (laser cutting). In the quest for results, we used the technique of marker tracking. This optical method of correlating images consists in measuring the plane components of the displacement of a plane surface leaving some marks on the specimen. This makes it possible to determine the in-plane components of the transformation gradient tensor and to reach the plane components of the deformation tensor under certain assumptions (axisymmetric or isochoric transformation, small deformations, etc). The material of the studied structure is a polymethylmethacrylate, often abbreviated to $${\text{PMMA}}$$ . The first results gave a negative Poisson’s ratio, announcing an auxetic behavior. The following results have confirmed the auxetic character of the cell and show great influence of the geometric parameters on the mechanical properties of the new structure.
Databáze: OpenAIRE
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