@article{eprints3675,
          volume = {26},
          number = {8},
            year = {2017},
          author = {Maria Laura De Bellis and Andrea Bacigalupo},
         journal = {Smart Materials and Structures},
           title = {Auxetic behavior and acoustic properties of microstructured piezoelectric strain sensors},
           pages = {085037},
       publisher = {IOPScience},
             url = {http://eprints.imtlucca.it/3675/},
        abstract = {The use of multifunctional composite materials adopting piezo-electric periodic cellular lattice structures with auxetic elastic behavior is a recent and promising solution in the design of piezoelectric sensors. In the present work, periodic anti-tetrachiral auxetic lattice structures, characterized by different geometries, are taken into account and the mechanical and piezoelectrical response are investigated. The equivalent piezoelectric properties are obtained adopting a first order computational homogenization approach, generalized to the case of electro-mechanical coupling, and various polarization directions are adopted. Two examples of in-plane and out-of-plane strain sensors are proposed as design concepts. Moreover, a piezo-elasto-dynamic dispersion analysis adopting the Floquet?Bloch decomposition is performed. The acoustic behavior of the periodic piezoelectric material with auxetic topology is studied and possible band gaps are detected.}
}