Title Multiscale thermo-mechanical analysis of multi-layered coatings in solar thermal applications
Authors MONTERO CHACÓN, FRANCISCO DE PAULA, Zaghi, S., Rossi, R., Garcia-Perez, E., Heras-Perez, I., Martinez, X., Oller, S., Doblare, M., MONTERO CHACÓN, FRANCISCO DE PAULA
External publication No
Means Finite Elem Anal Des
Scope Article
Nature Científica
JCR Quartile 1
SJR Quartile 1
JCR Impact 2.25300
SJR Impact 1.12900
Area International
Web https://www.scopus.com/inward/record.uri?eid=2-s2.0-85010440845&doi=10.1016%2fj.finel.2016.12.006&partnerID=40&md5=0947f2972e373bb3f17a58ebc74a246c
Publication date 01/05/2017
ISI 000395212400004
Scopus Id 2-s2.0-85010440845
DOI 10.1016/j.finel.2016.12.006
Abstract Solar selective coatings can be multi-layered materials that optimize the solar absorption while reducing thermal radiation losses, granting the material long-term stability. These layers are deposited on structural materials (e.g., stainless steel, Inconel) in order to enhance the optical and thermal properties of the heat transfer system. However, interesting questions regarding their mechanical stability arise when operating at high temperatures. In this work, a full thermo-mechanical multiscale methodology is presented, covering the nano-, micro-, and macroscopic scales. In such methodology, fundamental material properties are determined by means of molecular dynamics simulations that are consequently implemented at the microstructural level by means of finite element analyses. On the other hand, the macroscale problem is solved while taking into account the effect of the microstructure via thermo-mechanical homogenization on a representative volume element (RVE). The methodology presented herein has been successfully implemented in a reference problem in concentrating solar power plants, namely the characterization of a carbon-based nanocomposite and the obtained results are in agreement with the expected theoretical values, demonstrating that it is now possible to apply successfully the concepts behind Integrated Computational Materials Engineering to design new coatings for complex realistic thermo-mechanical applications.
Keywords Multiscale analysis; Thermo-mechanical homogenization; Finite element method; Representative Volume Element (RVE); Molecular dynamics; Solar selective coatings
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