Numerical homogenization of piezoelectric textileswith electrospun fibers for energy harvesting
Journal Title: Frattura ed Integrità Strutturale - Year 2014, Vol 8, Issue 29
Abstract
Piezoelectric effects are exploited in an increasing number of micro- and nano-electro-mechanicalsystems. In particular, energy harvesting devices convert ambient energy (i.e. mechanical pressure) into electricalenergy and their study is nowadays a very important and challenging field of research. In this paper, theattention is focused on piezoelectric textiles. Due to the importance of computational modeling to understandthe influence that micro-scale geometry and constitutive variables have on the macroscopic behavior, ahomogenization strategy is developed. The macroscopic structure behaviour is obtained defining a referencevolume element (RVE) at the micro-scale. The geometry of the RVE is based on the microstructural propertiesof the material under consideration and consists in piezoelectric polymeric nano-fibers subjected toelectromechanical contact constraints. This paper outlines theory and numerical implementation issues for thehomogenization procedure. Moreover, within this approach the average response resulting from the analysis ofdifferent fiber configurations at the microscale is determined providing a multiphysics constitutive model forthe macro-scale.
Authors and Affiliations
C. Maruccio, L. De Lorenzis
Keywords
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- EP ID EP105137
- DOI 10.3221/IGF-ESIS.29.06
- Views 135
- Downloads 0
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