Computer simulation of thermal cycling of porous coatings: Hybrid excitable cellular automata method

D. D. Moiseenko, S. V. Panin, P. V. Maksimov, V. E. Panin, D. S. Babich, S. Schmauder

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

The multiscale hybrid discrete-continuous approach of excitable cellular automata was applied to account for the porosity and nanocrystalline structure when taking an idealized quasi-elastic thermal barrier coating as an object under simulation. The developed technique includes a set of algorithms for calculating the local moments of forces and angular velocities of micro-rotations occurring in a heterogeneous medium with regard to energy dissipation. It was found that at thermal cycling of polycrystalline system high level microstresses occurs resulting from the thermal expansion anisotropy of grains. The stress level was shown to decrease with increasing fraction of rotational modes. This tendency takes place over the entire depth of the studied specimen and during the entire thermal loading time. The simulation results indicate on the existence of an optimal porosity level when the structure exhibits the highest relaxation capacity.

Original languageEnglish
Title of host publicationProceedings of the Advanced Materials with Hierarchical Structure for New Technologies and Reliable Structures
EditorsVasily M. Fomin, Victor E. Panin, Sergey G. Psakhie
PublisherAmerican Institute of Physics Inc.
Volume2051
ISBN (Electronic)9780735417779
DOIs
Publication statusPublished - 12 Dec 2018
EventInternational Symposium on Hierarchical Materials: Development and Applications for New Technologies and Reliable Structures 2018 - Tomsk, Russian Federation
Duration: 1 Oct 20185 Oct 2018

Conference

ConferenceInternational Symposium on Hierarchical Materials: Development and Applications for New Technologies and Reliable Structures 2018
CountryRussian Federation
CityTomsk
Period1.10.185.10.18

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ASJC Scopus subject areas

  • Physics and Astronomy(all)

Cite this

Moiseenko, D. D., Panin, S. V., Maksimov, P. V., Panin, V. E., Babich, D. S., & Schmauder, S. (2018). Computer simulation of thermal cycling of porous coatings: Hybrid excitable cellular automata method. In V. M. Fomin, V. E. Panin, & S. G. Psakhie (Eds.), Proceedings of the Advanced Materials with Hierarchical Structure for New Technologies and Reliable Structures (Vol. 2051). [020202] American Institute of Physics Inc.. https://doi.org/10.1063/1.5083445