Details
| Originalsprache | Englisch |
|---|---|
| Seiten (von - bis) | 82-95 |
| Seitenumfang | 14 |
| Fachzeitschrift | Computational materials science |
| Jahrgang | 116 |
| Publikationsstatus | Veröffentlicht - 9 Okt. 2015 |
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.
ASJC Scopus Sachgebiete
- Informatik (insg.)
- Allgemeine Computerwissenschaft
- Chemie (insg.)
- Allgemeine Chemie
- Werkstoffwissenschaften (insg.)
- Allgemeine Materialwissenschaften
- Ingenieurwesen (insg.)
- Werkstoffmechanik
- Physik und Astronomie (insg.)
- Allgemeine Physik und Astronomie
- Mathematik (insg.)
- Computational Mathematics
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in: Computational materials science, Jahrgang 116, 09.10.2015, S. 82-95.
Publikation: Beitrag in Fachzeitschrift › Artikel › Forschung › Peer-Review
}
TY - JOUR
T1 - A computational framework for the interplay between delamination and wrinkling in functionally graded thermal barrier coatings
AU - Reinoso, J.
AU - Paggi, M.
AU - Rolfes, R.
N1 - Funding information: MP and JR would like to thank the European Research Council for supporting the ERC Starting Grant “Multi-field and multi-scale Computational Approach to Design and Durability of PhotoVoltaic Modules” – CA2PVM, under the European Union’s Seventh Framework Programme (FP/2007-2013)/ERC Grant Agreement n. 306622. JR acknowledges the support of the Spanish Ministry of Economy and Competitiveness/FEDER (DPI2012-37187) and the Andalusian Government (Projects of Excellence No. TEP-7093 and P12-TEP-1050).
PY - 2015/10/9
Y1 - 2015/10/9
N2 - 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.
AB - 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.
KW - Functionally Graded Materials
KW - Nonlinear finite element method
KW - Nonlinear fracture mechanics
KW - Thin films
KW - Wrinkling instability
UR - http://www.scopus.com/inward/record.url?scp=84959510183&partnerID=8YFLogxK
U2 - 10.1016/j.commatsci.2015.08.031
DO - 10.1016/j.commatsci.2015.08.031
M3 - Article
AN - SCOPUS:84959510183
VL - 116
SP - 82
EP - 95
JO - Computational materials science
JF - Computational materials science
SN - 0927-0256
ER -