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Mechanical characterisation of a periodic auxetic structure produced by SEBM
Author(s) -
Schwerdtfeger J.,
Schury F.,
Stingl M.,
Wein F.,
Singer R. F.,
Körner C.
Publication year - 2012
Publication title -
physica status solidi (b)
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.51
H-Index - 109
eISSN - 1521-3951
pISSN - 0370-1972
DOI - 10.1002/pssb.201084211
Subject(s) - auxetics , materials science , finite element method , material properties , process (computing) , mechanical engineering , composite material , structural engineering , biological system , computer science , engineering , biology , operating system
Abstract We present a thorough investigation of the mechanical behaviour of a non‐stochastic cellular auxetic structure. A combination of experimental and numerical methods is used to gain a deeper understanding of the mechanical behaviour and its dependence on the geometric properties of the cellular structure. The experimental samples are built from Ti‐6Al‐4V using selective electron beam melting, an additive manufacturing process giving the possibility to vary the geometry of the structure in a highly controlled manner. The use of finite element simulations and mathematical homogenisation allows us also to investigate off‐axis properties of the cellular material. This leads to a more comprehensive understanding of the mechanical behaviour of the auxetics. Ultimately, the gained knowledge can be used to tailor auxetic materials to specific applications.