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Design and testing ...
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Agnelli, FilippoEcole Polytech, FRA
(författare)
Design and testing of 3D-printed micro-architectured polymer materials exhibiting a negative Poisson’s ratio
- Artikel/kapitelEngelska2020
Förlag, utgivningsår, omfång ...
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2019-11-20
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Springer-Verlag New York,2020
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printrdacarrier
Nummerbeteckningar
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LIBRIS-ID:oai:DiVA.org:kau-88392
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https://urn.kb.se/resolve?urn=urn:nbn:se:kau:diva-88392URI
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https://doi.org/10.1007/s00161-019-00851-6DOI
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Språk:engelska
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Sammanfattning på:engelska
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Ämneskategori:ref swepub-contenttype
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Ämneskategori:art swepub-publicationtype
Anmärkningar
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This work proposes the complete design cycle for several auxetic materials where the cycle consists of three steps (i) the design of the micro-architecture, (ii) the manufacturing of the material and (iii) the testing of the material. We use topology optimization via a level-set method and asymptotic homogenization to obtain periodic micro-architectured materials with a prescribed effective elasticity tensor and Poisson’s ratio. The space of admissible micro-architectural shapes that carries orthotropic material symmetry allows to attain shapes with an effective Poisson’s ratio below −1−1. Moreover, the specimens were manufactured using a commercial stereolithography Ember printer and are mechanically tested. The observed displacement and strain fields during tensile testing obtained by digital image correlation match the predictions from the finite element simulations and demonstrate the efficiency of the design cycle.
Ämnesord och genrebeteckningar
Biuppslag (personer, institutioner, konferenser, titlar ...)
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Constantinescu, AndreiEcole Polytech, FRA
(författare)
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Nika, GrigorWeierstrass Inst Appl Anal & Stochast, DEU(Swepub:kau)grignika
(författare)
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Ecole Polytech, FRAWeierstrass Inst Appl Anal & Stochast, DEU
(creator_code:org_t)
Sammanhörande titlar
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Ingår i:Continuum Mechanics and Thermodynamics: Springer-Verlag New York32:2, s. 433-4490935-11751432-0959
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