Numerical solution of the thermomechanical processes in the thin layer structure of thermal barrier

• Autorzy: Kuneš J. , Veselý Z.
• Konferencja: International Conference on Numerical Methods and Continuum Mechanics (7 ; October 6-9, 1998, Stará Lesná ; High Tatras ; Slovakia)
• Języki publikacji: EN

Abstrakty

EN

High demands for dynamic thermal insulating protection of machine parts lead to the development of thermal barriers. The mathematical and simulation model has been developed to simulate thermomechanical processes during thermal shock on the surface of different thermal barrier structures. The finite element method has been applied to the heterogeneous thin layer structure of the thermal barrier. Temperature, temperature gradient, heat flux, thermally induced stress and strain have been chosen as the characteristics describing the dynamic behaviour of the thermal barrier during the thermal shock. Results of the simulation for several alternatives of thermal barrier are discussed to summarize the effect of characteristic parameters of the thermal barrier to its dynamic behaviour.

Słowa kluczowe

EN

thermomechanical treatment; computer simulation; thermal barrier

PL

obróbka cieplno-mechaniczna; symulacja komputerowa; bariera cieplna

• Wydawca: Instytut Podstawowych Problemów Techniki PAN
• Czasopismo: Computer Assisted Mechanics and Engineering Sciences
• Rocznik: 2000
• Tom: Vol. 7, No. 2
• Strony: 207--218
• Opis fizyczny: Bibliogr. 19 poz., tab., wykr.

Twórcy

autor

Kuneš J.

• West Bohemia University, Faculty of Applied Sciences, Department of physics, Univerzitní 22, Plzeň, 306 14, Czech Republic

autor

Veselý Z.

• West Bohemia University, Faculty of Applied Sciences, Department of physics, Univerzitní 22, Plzeň, 306 14, Czech Republic

Bibliografia

• [1] P. Bengtsson, Ch. Persson. Modelled and measured residual stresses in plasma sprayed thermal barrier coatings. Surface & Coatings Technology, 92: 78-86, 1997.
• [2] W. Blanke, ed. Thermophysikalische Stoffgrojgen, Springer-Verlag Berlin, Heidelberg, 1989.
• [3] W.J. Brindley. Properties of plasma-sprayed bond coats. Journal of Thermal Spray Technology, 6(1): 85-90, 1997.
• [4] Coatings for High-Temperature Structural Materials - Trends and Opportunities. Comittee on Coatings for High-Temperature Structural Materials, National Materials Advisory Board, Commission on Engineering and Technical Systems, National Research Council. National Academy Press, Washington, 1996.
• [5] D.J. Johns. Thermal Stress Analyses. Pergamon Press, Oxford, 1965.
• [6] J. KuneA, O. Vavroch, V. l'rkovskjr, F. Ceika, M. Marśfk. Physical Properties of the Steels, Part I.: Steels of the Class 15 to 19, (in Czech). Internal report, Skoda a. s., Pizd'', 1991.
• [7] W. Lih, E. Chang, B.C. Wu, C.H. Chao, A. Peng. Effect of bond-coat pre-aluminization and pre-oxidation duplex pretreatment on the performance of ZrO2 - 8 wt.% Y203 / Co - 29Cr - 6A1 - lY thermal barrier coatings. Oxidation of Metals, 40(3/4): 229-243, 1993.
• [8] Marc, Volume A, User Information. MARC Analysis Research Corporation, USA, 1994.
• [9] Mentat II., Command Reference. MARC Analysis Research Corporation, USA, 1994.
• [10] Mentat II., User's Guide. MARC Analysis Research Corporation, USA, 1996.
• [11] J. Musil, M. Alaya, R. Oberacker. Thermal cycling, oxidation behaviour and mechanical properties of graded and duplex PSZ TBC coatings. J. Heberlein, ed., Proc 12th International Symposium on Plasma Chemistry, Vol. II, 915-920. University of Minnesota, Minneapolis, 1995.
• [12] B.E. Neimark. Fizicheskie Svoistva Stalei i Splavov, Primeniaemych v Energetike. Energiia, Moscow, 1967.
• [13] N.A. Puchkelevich, E.Ia. Litovskii. Teplofizicheskie Svoistva Ogneuporov. Metallurgiia, Moscow, 1982.
• [14] Kh.G. Schmitt-Thomas, U. Dietl. Thermal barrier coatings with improved oxidation resistance. Surface and Coatings Technology, 68/69: 113-115, 1994.
• [15] T.E. Strangman. Thermal strain-tolerant abradable thermal barrier coatings. Journal of Engineering for Gas Turbines and Power, 114: 264-267, 1992.218 J. Kuneś and Z. Veselyr
• [16] J.H. Sun, E. Chang, C.H. Chao, M.J. Cheng, The spalling modes and degradation mechanism of ZrO2 - 8 wt.% Y203 / CVD - A1203 / Ni - 22Cr - 10A1- 1Y thermal barrier coatings. Oxidation of Metals, 40(5/6): 465-481, 1993.
• [17] Y.S. Touloukian, C.Y. Ho, eds. Thermophysical Properties of Matter — The TPRC Data Series. IFI/Plenum, New York, 1970.
• [18] H.L. Tsai, P.C. Tsai. Performance of laser-glazed plasma-sprayed (ZrO2 - 12 wt. % Y203)/(Ni - 22 wt. % Cr - 10 wt. % Al - 1 wt. % Y) thermal barrier coatings in cyclic oxidation tests. Surface and Coatings Technology, 71: 53-59, 1995.
• [19] 0.C. Zienkiewicz. The Finite Element Method. McGraw-Hill, New York, 1973.