Thermal barrier influence on temperature and stress fields in an internal combustion engine piston

• Autorzy: Kurowski, Z. , Niezgoda, T. , Szymczyk, W.
• Języki publikacji: EN

Abstrakty

EN

The paper presents results of numerical Finite Element analysis of an internal combustion engine piston with a thermal barrier made of zirconia, subjected to thermal and thermo-mechanical loadings. Special emphasis was laid on investigation of the impact of the surface coating on the fields of temperature, heat fluxes, residual stresses and stresses in the coated piston in the working conditions. For this a purpose, a methodology of developing FEM numerical models of a piston with a surface coating was elaborated, several 2D and 3D FEM models of the piston with the coating were built, and FEM analysis of the models, subjected to thermal and thermo-mechanical loadings was performed. The results of computations proved high efficiency of the coating as a thermal barrier. The working temperature in some areas inside the piston with a coating showed a huge decrease and was 40% lower as compared with the temperature for the same piston without a coating. At the same time, the heat fluxes inside the piston were reduced almost ten times. The developed methodology of modelling and simulation may lead to obtain higher thermal resistance, strength and durability of internal combustion engines and their elements with thermal barriers in all fields of application, including aviation.

• Czasopismo: Journal of KONES
• Rocznik: 2006
• Tom: Vol. 13, No. 2
• Strony: 259-266
• Opis fizyczny: Bibliogr. 7 poz., rys.

Twórcy

autor

Kurowski, Z.

autor

Niezgoda, T.

autor

Szymczyk, W.

• Faculty of Mechanical Engineering, Military University of Technology, ul. Kaliskiego 2, 00-908 Warsaw, Poland, tel./fax: [phone],

Bibliografia

• 1. Chunyu Li, Zhenzhu Zou., Internally circumferentially cracked cylinders with functionally graded material properties International Journal of Pressure Vessels and Piping, Volume 75,Issue 6, May 1998, Pages 499-507.
• 2. Fogarassy P., Turquier F., Lodini A., Residual stress in plasma sprayed zirconia on cylindrical components, Mechanics of Materials 35 (2003) 633-640.
• 3. Hejwowski T., Weroński A., The effect of thermal barrier coatings on diesel engine performances, Vacuum 65 (2002) 427-432.
• 4. Khor K.A., Gu Y.W., Effects of residual stresses on the performance of plasma sprayed functionally graded ZrO2/NiCoCrAlY coatings, Materials Science and Engineering A277 (2000) 64-76.
• 5. Montay G., Cherouat A., Lu J., Baradel N., Bianchi L., Development of the high-precision incremental-step hole-drilling method for the study of residual stress in multi-layer materials: influence of temperature and substrate on ZrO2-Y2O3 8 wt.% coatings, Surface and Coatings Technology 155 (2002) 152–160.
• 6. Niezgoda T., Szymczyk W., Małachowski J., Numerical determination of residual stress concentration in an internal combustion engine piston’s valve with a surface coating (in Polish), Symposium on Materials and Structures Failure, Augustów, 04-07.06 2003.
• 7. Widjaja S., Limarga A., Ticj H. Y., Modelling of residual stresses in a plasma sprayed zirconia / alumina functionally – thermal barrier coating, Thin Solids Films, 434 (2003), Pages 216-227.