eprintid: 3675
rev_number: 11
eprint_status: archive
userid: 69
dir: disk0/00/00/36/75
datestamp: 2017-03-21 12:24:42
lastmod: 2017-09-18 09:30:16
status_changed: 2017-03-21 12:24:42
type: article
metadata_visibility: show
creators_name: De Bellis, Maria Laura
creators_name: Bacigalupo, Andrea
creators_id: 
creators_id: andrea.bacigalupo@imtlucca.it
title: Auxetic behavior and acoustic properties of microstructured piezoelectric strain sensors
ispublished: pub
subjects: T1
subjects: TJ
divisions: CSA
full_text_status: public
monograph_type: working_paper
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.
date: 2017
date_type: published
publication: Smart Materials and Structures
volume: 26
number: 8
publisher: IOPScience
pagerange: 085037
pages: 28
id_number: 10.1088/1361-665X/aa7772
institution: IMT Institute for Advanced Studies Lucca
refereed: TRUE
issn: 0964-1726
official_url: https://doi.org/10.1088/1361-665X/aa7772
citation:   De Bellis, Maria Laura and Bacigalupo, Andrea  Auxetic behavior and acoustic properties of microstructured piezoelectric strain sensors.  Smart Materials and Structures, 26 (8).  085037.  ISSN 0964-1726      (2017)  
document_url: http://eprints.imtlucca.it/3675/1/1703.01144.pdf