De Bellis, Maria Laura and Bacigalupo, Andrea Auxetic behavior and acoustic properties of microstructured piezoelectric strain sensors. Working Paper arXiv (Submitted)
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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.
|Item Type:||Working Paper (Working Paper)|
|Subjects:||T Technology > T Technology (General)
T Technology > TJ Mechanical engineering and machinery
|Research Area:||Computer Science and Applications|
|Depositing User:||Caterina Tangheroni|
|Date Deposited:||21 Mar 2017 12:24|
|Last Modified:||21 Mar 2017 12:24|
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