TY  - CONF
SP  - 542
ID  - eprints3790
M2  - Genova, Italy
PB  - AIMETA
T2  - 22° Conference of the Italian association of theoretical and applied mechanics  AIMETA2015
Y1  - 2015///
SN  - 978-88-97752-55-4
A1  - Bacigalupo, Andrea
A1  - Lepidi, Marco
AV  - none
N2  - The engineered class of periodic anti-tetrachiral materials is mainly characterized by
the unusual macroscopic property of a negative Poisson?s ratio. The auxetic behavior of the material
depends on the geometric and elastic features of the microstructure. In particular, the material symmetries
of the periodic cell govern the quadratic or orthotropic symmetry of the first-order elastic
tensor (i.e. auxetic quadratic or auxetic orthotropy). Under the assumption of uniform mass density
and elastic properties, one or the other case can be realized by a square or rectangular microstructure,
respectively. A beam lattice model with lumped masses is employed to analyse the effects
of different, usually small-valued, geometric and elastic parameters of the high- and low-frequency
dispersion curves and band gaps characterizing the free wave propagation.
EP  - 551
TI  - A lumped mass beam model for the wave propagation in anti-tetrachiral periodic lattices
UR  - http://www.aimeta2015.dicam.unibo.it/sites/www.aimeta2015.dicam.unibo.it/files/memorie_estese_Aimeta2015-3.pdf
ER  -