relation: http://eprints.imtlucca.it/3611/
title: A computational framework for the interplay between delamination and wrinkling in functionally graded thermal barrier coatings
creator: Reinoso, José
creator: Paggi, Marco
creator: Rolfes, Raimund
subject: TA Engineering (General). Civil engineering (General)
description: 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.
publisher: Elsevier
date: 2016-04-15
type: Article
type: PeerReviewed
identifier:   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)  
relation: 10.1016/j.commatsci.2015.08.031