• Medientyp: Sonstige Veröffentlichung; E-Book; Bericht
  • Titel: Design and testing of 3D-printed micro-architectured polymer materials exhibiting a negative Poisson's ratio
  • Beteiligte: Agnelli, Filippo [VerfasserIn]; Constantinescu, Andrei [VerfasserIn]; Nika, Grigor [VerfasserIn]
  • Erschienen: Weierstrass Institute for Applied Analysis and Stochastics publication server, 2019
  • Sprache: Englisch
  • DOI: https://doi.org/10.20347/WIAS.PREPRINT.2624
  • Schlagwörter: article ; 35M10 ; 74B05 ; 35M30 ; 35Q93 ; 35M12 ; Auxetic material -- topology optimization -- 3D printing -- polymer
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  • Beschreibung: 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. In more precise terms, we aim to obtain domain micro-architectured materials with a prescribed elasticity tensor and Poisson's ratio. In order to reach this goal we use topology optimization via the level set method for the material design process. Specimens are manufactured using a commercial stereo-lithography Ember printer and mechanically tested. The observed displacement and strain fields during tensile testing obtained by digital image correlation match the predictions from the FE simulation.