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dc.contributor.author
 hal.structure.identifier
FAVRE, Julien
209650 Laboratoire Georges Friedel [LGF-ENSMSE]
dc.contributor.authorLOHMULLER, Paul
dc.contributor.authorPIOTROWSKI, Boris
dc.contributor.author
 hal.structure.identifier
KENZARI, Samuel
104710 Institut Jean Lamour [IJL]
dc.contributor.authorLAHEURTE, Pascal
dc.contributor.author
 hal.structure.identifier
MERAGHNI, Fodil
178323 Laboratoire d'Etude des Microstructures et de Mécanique des Matériaux [LEM3]
dc.date.accessioned2018
dc.date.issued2018
dc.date.submitted2018
dc.identifier.issn2214-8604
dc.identifier.urihttp://hdl.handle.net/10985/12914
dc.description.abstractThis original work proposes to investigate the transposition of crystallography rules to cubic lattice architectured materials to generate new 3D porous structures. The application of symmetry operations provides a complete and convenient way to configure the lattice architecture with only two parameters. New lattice structures were created by slipping from the conventional Bravais lattice toward non-compact complex structures. The resulting stiffness of the porous materials was thoroughly evaluated for all the combinations of architecture parameters. This exhaustive study revealed attractive structures having high specific stiffness, up to twice as large as the usual octet-truss for a given relative density. It results in a relationship between effective Young modulus and relative density for any lattice structure. It also revealed the opportunity to generate auxetic structures at will, with a controlled Poisson ratio. The collection of the elastic properties for all the cubic structures into 3D maps provides a convenient tool for lattice materials design, for research, and for mechanical engineering. The resulting mechanical properties are highly variable according to architecture, and can be easily tailored for specific applications using the simple yet powerful formalism developed in this work.
dc.description.sponsorshipThe authors acknowledge the financial support from French National Research Agency ANR (LabEx DAMAS, Grant no.ANR-11-LABX-0008-01).
dc.language.isoen
dc.publisherElsevier
dc.rightsPost-print
dc.subjectlattice structures
dc.subjectporous materials
dc.subject3D surface maps
dc.subjectfinite elements
dc.subjectauxetic
dc.titleA continuous crystallographic approach to generate cubic lattices and its effect on relative stiffness of architectured materials
ensam.embargo.terms2018-11
ensam.embargo.lift2018-11
dc.identifier.doi10.1016/j.addma.2018.02.020
dc.typdocArticle dans une revue avec comité de lecture
dc.localisationCentre de Metz
dc.subject.halSciences de l'ingénieur: Matériaux
dc.subject.halSciences de l'ingénieur: Mécanique
dc.subject.halSciences de l'ingénieur: Mécanique: Mécanique des matériaux
dc.subject.halSciences de l'ingénieur: Mécanique: Mécanique des solides
ensam.audienceInternationale
ensam.page359-368
ensam.journalAdditive Manufacturing
ensam.volume21
ensam.peerReviewingOui
hal.identifierhal-01761428
hal.version1
hal.statusaccept
dc.identifier.eissn2214-7810


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