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)
Full text not available from this repository.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.
| Item Type: | Article |
|---|---|
| Identification Number: | https://doi.org/10.1016/j.commatsci.2015.08.031 |
| Projects: | ERC StG CA2PVM 306622 |
| Funders: | European Research Council |
| Subjects: | T Technology > TA Engineering (General). Civil engineering (General) |
| Research Area: | Computer Science and Applications |
| Depositing User: | Prof Marco Paggi |
| Date Deposited: | 27 Dec 2016 09:12 |
| Last Modified: | 27 Dec 2016 09:12 |
| URI: | http://eprints.imtlucca.it/id/eprint/3611 |
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