首页|Convective Heat Transfer Steady Thermal Stress in a ZrO_2/FGM/Ti-6Al-4V Composite ECBF Plate with Temperature-Dependent Material Properties
Convective Heat Transfer Steady Thermal Stress in a ZrO_2/FGM/Ti-6Al-4V Composite ECBF Plate with Temperature-Dependent Material Properties
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NETL
NSTL
Trans Tech Publications Ltd
A NFE model is constructed to analyze the convective heat transfer steady thermal stress in a ZrO_2/FGM/Ti-6Al-4V composite ECBF plate with temperature-dependent material properties. From numerical calculation, when h_a=h_b , T_0=300K, T_a=550K and T_b=1800K, the stress distributions in the plate were obtained. The results are as follows. With the increase of the FGM gradient layer thickness, the stress distribution in the composite plate is more reasonable. With the increase of M, the thermal stress change increases obviously in metal and ceramic layers, and the stress on the ceramic surface reduces. With the increase of porosity, the change of stress at the bonding interfaces increases, and the tensile stress on the surface of ceramics reaches the maximum. Compared with h_a=h_b=1, when h_a =h_b = 10, the stress on the metal surface reduces by 25.1%, and the maximum compressive stress on the surface of ceramics increases about 1.2GPa. Compared with the nongraded two-layered ceramic/metal composite plate, the thermal stress of ZrO_2/FGM/Ti-6Al -4V composite ECBF plate is very gentle. When we consider the temperature dependency of the material properties, the thermal stress in graded three-layered composite plate becomes small obviously. The results provide the foundations of theoretical calculation for the design and application of the composite plate.
FGM composite plateSteady thermal stressNFEM
Yangjian Xu、Haiyang Du、Daihui Tu
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School of Civil Engineering, Hebei University of Engineering, Handan 056038, China
School of Science, Hebei University of Engineering, Handan 056038, China
NETL
NSTL
Trans Tech Publications Ltd
