eprintid: 2544
rev_number: 8
eprint_status: archive
userid: 6
dir: disk0/00/00/25/44
datestamp: 2015-01-21 09:53:35
lastmod: 2016-03-11 12:17:52
status_changed: 2015-01-21 09:53:35
type: article
metadata_visibility: show
creators_name: Bacigalupo, Andrea
creators_name: Morini, Lorenzo
creators_name: Piccolroaz, Amdrea
creators_id: andrea.bacigalupo@imtlucca.it
creators_id: lorenzo.morini@imtlucca.it
creators_id: 
title: Effective elastic properties of planar SOFCs: a non-local dynamic homogenization approach
ispublished: pub
subjects: TJ
divisions: CSA
full_text_status: public
keywords: Solid oxide fuel cells; Second-gradient continuum; Dynamic homogenization; Dispersive waves
abstract: Abstract The focus of the article is on the analysis of effective elastic properties of planar Solid Oxide Fuel Cell (SOFC) devices. An ideal periodic multi-layered composite (SOFC-like) reproducing the overall properties of multi-layer {SOFC} devices is defined. Adopting a non-local dynamic homogenization method, explicit expressions for overall elastic moduli and inertial terms of this material are derived in terms of micro-fluctuation functions. These micro-fluctuation functions are then obtained solving the cell problems by means of finite element techniques. The effects of the temperature variation on overall elastic and inertial properties of the fuel cells are studied. Dispersion relations for acoustic waves in SOFC-like multilayered materials are derived as functions of the overall constants, and the results obtained by the proposed computational homogenization approach are compared with those provided by rigorous Floquet–Bloch theory. Finally, the influence of the temperature and of the elastic properties variation on the Bloch spectrum is investigated.
date: 2014-09
date_type: published
publication: International Journal of Hydrogen Energy
volume: 39
number: 27
publisher: Elsevier
pagerange: 15017 - 15030
id_number: 10.1016/j.ijhydene.2014.06.104
refereed: TRUE
issn: 0360-3199
official_url: http://www.sciencedirect.com/science/article/pii/S0360319914017832
citation:   Bacigalupo, Andrea and Morini, Lorenzo and Piccolroaz, Amdrea  Effective elastic properties of planar SOFCs: a non-local dynamic homogenization approach.  International Journal of Hydrogen Energy, 39 (27).  15017 - 15030.  ISSN 0360-3199      (2014)  
document_url: http://eprints.imtlucca.it/2544/1/1404.7229.pdf