eprintid: 3611
rev_number: 6
eprint_status: archive
userid: 56
dir: disk0/00/00/36/11
datestamp: 2016-12-27 09:12:55
lastmod: 2016-12-27 09:12:55
status_changed: 2016-12-27 09:12:55
type: article
metadata_visibility: show
creators_name: Reinoso, José
creators_name: Paggi, Marco
creators_name: Rolfes, Raimund
creators_id: 
creators_id: marco.paggi@imtlucca.it
creators_id: 
title: A computational framework for the interplay between delamination and wrinkling in functionally graded thermal barrier coatings
ispublished: pub
subjects: TA
divisions: CSA
full_text_status: none
abstract: Stiff films bonded to compliant substrates are used in a wide range of technological applications and especially in thermal barrier coatings (TBC). Thin films can be made of Functionally Graded Materials (FGMs) with a heterogeneous composition that usually range from a metallic to a ceramic phase. Aiming at investigating the phenomenon of delamination of thin FGM layers from compressed elastic substrates, a fully 3D nonlinear computational framework combining nonlinear fracture mechanics based on a novel interface element formulation for large displacements and a solid shell finite element to model the thin film is proposed. A comprehensive numerical analysis of delamination in TBCs is carried out, paying a special attention to the interplay between fracture and wrinkling instabilities. Results of the computations are also compared with benchmark 2D semi-analytical results, showing good accuracy of the proposed method that can be applied to general 3D configurations that are difficult to address by semi-analytical approaches.
date: 2016-04-15
date_type: published
publication: Computational Materials Science
volume: 116
publisher: Elsevier
pagerange: 82-95
id_number: 10.1016/j.commatsci.2015.08.031
refereed: TRUE
issn: 0927-0256
related_url_url: http://dx.doi.org/10.1016/j.commatsci.2015.08.031
related_url_type: pub
funders: European Research Council
projects: ERC StG CA2PVM 306622
citation:   Reinoso, José and Paggi, Marco and Rolfes, Raimund  A computational framework for the interplay between delamination and wrinkling in functionally graded thermal barrier coatings.  Computational Materials Science, 116.  pp. 82-95.  ISSN 0927-0256      (2016)