Convective Heat Transfer Steady Thermal Stress in a ZrO2/FGM/Ti-6Al-4V Composite ECBF Plate with Temperature-Dependent Material Properties
A NFE model is constructed to analyze the convective heat transfer steady thermal stress in a ZrO2/FGM/Ti-6Al-4V composite ECBF plate with temperature-dependent material properties.From numerical calculation,when ha=hb=l,T0=300K,Ta=550K and Tb=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 ha =hb =1,when ha =hb =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 ZrO2/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 plate Steady thermal stress NFEM
Yangjian Xu Haiyang Du Daihui Tu
School of Civil Engineering, Hebei University of Engineering, Handan 056038, China School of Science, Hebei University of Engineering, Handan 056038, China
国际会议
The Sixth China International Conference on High-Performance Ceramics(第六届中国先进陶瓷国际研讨会(CICC-6))
哈尔滨
英文
158-161
2009-08-16（万方平台首次上网日期，不代表论文的发表时间）