Bitte benutzen Sie diese Referenz, um auf diese Ressource zu verweisen: doi:10.22028/D291-35454
Titel: Design Study for Multifunctional 3D Re‐entrant Auxetics
VerfasserIn: Bronder, Stefan
Herter, Franziska
Röhrig, Anabel
Bähre, Dirk
Jung, Anne
Sprache: Englisch
Titel: Advanced Engineering Materials
Bandnummer: 24
Heft: 1
Verlag/Plattform: Wiley
Erscheinungsjahr: 2021
Freie Schlagwörter: additive manufacturing
auxetic structures
compression experiments
energy absorbers
finite-element simulations
DDC-Sachgruppe: 500 Naturwissenschaften
Dokumenttyp: Journalartikel / Zeitschriftenartikel
Abstract: The increasing demands of safety, cost reduction, or weight reduction on components call for new, multifunctional materials. Mechanical metamaterials, such as auxetic materials, provide enhanced properties due to a specially tailored microstructure. The negative Poisson's ratio of auxetics, for instance, increases the impact and thermal shock resistance. Herein, a parametrized model of a modified auxetic structure is simulated using the finite-element software ABAQUS. Three out of five geometry parameters are varied between a minimum and maximum value to establish their impact on the energy absorption capacity and the Poisson's ratio using design of experiment (DoE). All eight resulting structures are additively manufactured by selective laser melting (SLM) and experimentally investigated under uniaxial compression to validate the simulations. The size of a unit cell has the biggest impact on both target values. Energy absorption capacity and Poisson's ratio are directly competing in optimization; hence, a compromise is necessary. The quasistatic compression experiments verify the simulation results up to the first collapse. Afterward, the specimens are brittle, which is not accounted for in the simulations, and this may result from the high process complexity of SLM manufacturing.
DOI der Erstveröffentlichung: 10.1002/adem.202100816
Link zu diesem Datensatz: urn:nbn:de:bsz:291--ds-354548
hdl:20.500.11880/32377
http://dx.doi.org/10.22028/D291-35454
ISSN: 1527-2648
1438-1656
Datum des Eintrags: 9-Feb-2022
Fakultät: NT - Naturwissenschaftlich- Technische Fakultät
Fachrichtung: NT - Materialwissenschaft und Werkstofftechnik
Professur: NT - Prof. Dr. Dirk Bähre
NT - Prof. Dr. Stefan Diebels
Sammlung:SciDok - Der Wissenschaftsserver der Universität des Saarlandes

Dateien zu diesem Datensatz:
Datei Beschreibung GrößeFormat 
Adv Eng Mater - 2021 - Bronder - Design Study for Multifunctional 3D Re‐entrant Auxetics.pdf11,85 MBAdobe PDFÖffnen/Anzeigen


Diese Ressource wurde unter folgender Copyright-Bestimmung veröffentlicht: Lizenz von Creative Commons Creative Commons