Numerical simulations of temperature and stress distribution in thermal barrier coatings in the context of differences in input data values – external ceramic layer

• Autorzy: Jasik Anna

Identyfikatory

DOI

10.15199/40.2023.8.4

Warianty tytułu

PL

Symulacje numeryczne rozkładu temperatury oraz stanu naprężeń w powłokowych barierach cieplnych w kontekście różnic w wartościach danych wejściowych – warstwa ceramiczna

• Języki publikacji: EN

Abstrakty

EN

The article presents the research results on the impact of differences in input data values concerning materials used in thermal barrier coating systems on the results of simulations using the finite element method of temperature distribution and Huber-Mises equivalent stresses. Literature data on basic physical quantities important from the point of view of modelling, i.e. thermal conductivity coefficient, linear expansion coefficient, specific heat, density, Poisson fraction and Young’s modulus, were reviewed. It has been shown that the data is characterised by a very wide range of values, which makes the issue of the final simulation results debatable. The study performed a simple statistical analysis of the available data for the 8YSZ compound, using the minimum, maximum, mean, and median values to simulate deadness. It was found that the results of the obtained simulations with the use of these data differ fundamentally from each other.

PL

Symulacje numeryczne rozkładu temperatury oraz stanu naprężeń w powłokowych barierach cieplnych w kontekście różnic w wartościach danych wejściowych – warstwa ceramiczna W artykule przedstawiono wyniki badań nad wpływem różnic w wartościach danych wejściowych dotyczących materiałów używanych w systemach powłokowych barier cieplnych na wyniki symulacji metodą elementów skończonych rozkładu temperatury i naprężeń zastępczych Hubera-Misesa. Dokonano przeglądu danych literaturowych na temat podstawowych wielkości fizycznych istotnych z punktu widzenia modelowania, tj. współczynnika przewodnictwa cieplnego, współczynnika rozszerzalności liniowej, ciepła właściwego, gęstości, ułamka Poissona oraz modułu Younga. Wykazano, że dane charakteryzują się bardzo dużym rozrzutem wartości, co sprawia, że finalne wyniki symulacji są dyskusyjne. W badaniach przeprowadzono prostą analizę statystyczną dostępnych danych dotyczących związku 8YSZ, wykorzystując do symulacji wartości minimalne, maksymalne, średnią i medianę. Stwierdzono, że uzyskane wyniki symulacji z użyciem tych danych różnią się od siebie w sposób zasadniczy.

Słowa kluczowe

EN

FEM; TBC; simulations; input data; reliability of calculations

PL

MES; TBC; symulacje; dane wejściowe; wiarygodność

• Wydawca: Wydawnictwo SIGMA-NOT
• Czasopismo: Ochrona przed Korozją
• Rocznik: 2023
• Tom: nr 8
• Strony: 247--252
• Opis fizyczny: Bibliogr. 35 poz., tab., rys., wykr.

Twórcy

autor

Jasik Anna

• Silesian University of Technology, Department of Materials Technology, Material Innovation Laboratory, Katowice, Poland

• https://orcid.org/0000-0001-7413-486X

Bibliografia

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