Analysis of Steady Thermal Stress in a ZrO2/FGM/Ti-6Al-4V Composite ECBF Plate with Temperature-Dependent Material Properties by NFEM
A NFE model is constructed to analyze the heating steady thermal stress in a ZrO2/FGM/Ti-6AI-4V composite ECBF plate considered temperature dependency. From numerical calculation, when T0=300K Ta=670 and Tb=1 070K, the stress distributions in the plate were obtained. The results are as follows. The change of the FGM layer thickness is little effect on the stress in metal layer. Compared with M=0.1, when M=10, the stress difference on the ceramic surface is 133.9MPa, and the tensile stress at the interface between FGM and ceramic layers reduces by 52.3％. Compared with .4=3.99, when A=0, the tensile stress on the ceramic surface reduces by 96.2％. When T0=300K, Ta=100K, compared with Tb=1 800K, when Tb=1050K, the tensile stress in the plate reduces by 84.1％, and the maximum stress difference on the surface of ceramics is 1610.8MPa. Compared with the nongraded two-layered ceramic/metal composite plate, the thermal stress of ZrO2/FGM/Ti-6AI-4V composite ECBF plate is very gentle and smooth. The stress in graded three-layered composite plate considered temperature dependency becomes small obviously, and the maximum tensile stress on the metal surface reduces by 30.1％, and the maximum compressive stress on the ceramic surface reduces by 9.49％. The results provide the foundations of theoretical calculation for the design and application of the composite plate.
ZrO/FGM/Ti-6Al-4V composite plate steady thermal stresses NFEM ECBF mechanical boundary
Yangjian Xu Daihui Tu
School of Civil Engineering, Hebei University of Engineering, Handan 056038, Hebei, P.R.China School of Science, Hebei University of Engineering, Handan 056038, Hebei, P.R.China
国际会议
2009 WASE International Conference on Information Engineering(2009年国际信息工程会议)(ICIE 2009)
太原
英文
1092-1095
2009-07-10（万方平台首次上网日期，不代表论文的发表时间）