Finite Element Simulation of Temperature Distribution and Residual Stresses in New Thermal Barrier Coating La2Zr2O7/8YSZ

Document Type : Original Articles

Authors

• Nasim Nayebpashaee ¹
• Hossein Vafaeenezhad ¹
• hossein seyedein ¹
• mohammad reza aboutalebi ¹
• hossein sarpoolaki ¹
• seyed mohammad mehdi hadavi ²

¹ Iran University of Science and Technology.

² malek ashtar

10.22067/ma.v28i2.37542

Abstract

An attempt was made to investigate the thermal and residual stress distribution in a novel three layer (La2Zr2O7/ 8YSZ/ NiCrAlY) during a real-like heating regime. The technique of reduction of solving time like mass scaling leads to a considerable reduction in running time while satisfying and not violating accuracy and converging criteria and constrains. Simulation results indicated that, most of damaging and harmful distortion and residual stress concentrate on ceramic top coats and this lead less harm and life time reduction in substrate.

Keywords

• Thermal barrier coating
• Residual stresses
• Finite element simulation
• Thermal shock

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