Original title:
Mechanical properties of 3D auxetic structures produced by additive manufacturing
Authors:
Jiroušek, O. ; Koudelka_ml., Petr ; Fíla, Tomáš Document type: Papers Conference/Event: Engineering mechanics 2015 /21./, Svratka (CZ), 2015-05-11 / 2015-05-14
Year:
2015
Language:
eng Abstract:
Three distinct auxetic structures were produced by direct 3D printing based on parametric CAD models. Mechanical properties of the structures were established by static compression tests where strain fields on the surface of the specimens was measured by non-contact optical method. Parametric finite element (FE) model of each structure was then subjected to a virtual compression test and mechanical properties obtained from the FE simulations were compared to the experimentally assessed values. After verification, the parametric FE models were used to establish relationships between various design parameters (porosity, rod thickness, internal angles, etc.) and overall mechanical properties (particularly stiffness).
Keywords:
auxetic structure; digital image correlation; direct 3D printing; finite element method Host item entry: Engineering mechanics 2015. 21st International conference, May 11-14, 2015, Svratka, Czech Republic. Extended abstracts, ISBN 978-80-86246-42-0, ISSN 1805-8248
Institution: Institute of Theoretical and Applied Mechanics AS ČR
(web)
Document availability information: Fulltext is available at the institute of the Academy of Sciences. Original record: http://hdl.handle.net/11104/0246863