eprintid: 3610
rev_number: 7
eprint_status: archive
userid: 56
dir: disk0/00/00/36/10
datestamp: 2016-12-27 09:05:28
lastmod: 2016-12-27 09:05:28
status_changed: 2016-12-27 09:05:28
type: article
metadata_visibility: show
creators_name: Ojo, Saheed Olalekan
creators_name: Paggi, Marco
creators_id: saheed.ojo@imtlucca.it
creators_id: marco.paggi@imtlucca.it
title: A 3D coupled thermo-visco-elastic shear-lag formulation for the prediction of residual stresses in photovoltaic modules after lamination
ispublished: pub
subjects: TA
divisions: CSA
full_text_status: none
keywords: Photovoltaics; Residual stresses; Laminates; 3D shear-lag model; Thermo-visco-elasticity; Polymeric encapsulant
note: SCOPUS ID: 2-s2.0-84987625456
abstract: Evaluation of the residual stress distribution arising from lamination of photovoltaic (PV) modules is important to address thermomechanically induced failure of PV modules during service. In view of the fact that PV modules contain several Silicon cells, modelling the thermo-mechanical response of PV laminates during cooling after lamination is computationally challenging. Due to the coupling between the thermal and the mechanical fields, the stress state experienced by each silicon cell in a module varies from one position to another. Here, a novel 3D coupled thermo-visco-elastic shear-lag model is proposed to determine the stress distribution in a PV module after lamination. To enhance the prediction of stress distribution in the laminate, viscoelastic properties of the EVA encapsulant are taken into account by using an asymptotic model which is stable for small and large time steps of strain increments. The results for a simulated mini-module show that residual stresses vary significantly from point to point inside the PV module.
date: 2016-12-01
date_type: published
publication: Composite Structures
volume: 157
publisher: Elsevier
pagerange: 348-359
id_number: 10.1016/j.compstruct.2016.08.036
refereed: TRUE
issn: 0263-8223
related_url_url: http://dx.doi.org/10.1016/j.compstruct.2016.08.036
related_url_type: pub
funders: European Research Council
projects: ERC StG CA2PVM 306622
citation:   Ojo, Saheed Olalekan and Paggi, Marco  A 3D coupled thermo-visco-elastic shear-lag formulation for the prediction of residual stresses in photovoltaic modules after lamination.  Composite Structures, 157.  pp. 348-359.  ISSN 0263-8223      (2016)