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用非线性有限元法和辛普生法分析了由ZrO2和Ti-6Al-4V组成的变物性梯度功能材料板在不同力学边界条件下的稳态热应力问题.结果表明:当无限长板只能伸长、不能弯曲时,板内稳态拉应力最大,比无限自由长板时板内最大拉应力增大6.1倍;当无限长板伸长、弯曲受限时,板内的压应力最大,比无限自由长板时板内最大压应力增大14.9倍;考虑变物性的最大拉应力比常物性减小48.9%,最大压应力比常物性减小39.6%;此外,材料组分形状系数M、对流换热系数和孔隙度的变化对不同力学边界条件下该变物性材料板稳态热应力场的影响显著.此结果为该材料的设计和应用提供了准确的理论计算依据.图4,表1,参8.
Nonlinear finite element method and Simpson method were used to analyze the steady-state thermal stress of FGM plates composed of ZrO2 and Ti-6Al-4V under different mechanical boundary conditions. The results show that when the infinite plate can only elongate , Can not be bent, the maximum tensile stress within the plate, the maximum tensile stress than the infinite free long plate when the plate increases 6.1 times; when the infinite plate elongation, bending is limited, the maximum compressive stress within the plate, The maximum compressive stress increases 14.9 times in the free long plate; the maximum tensile stress considering the variable property decreases by 48.9% than the normal property and the maximum compressive stress decreases by 39.6% than the normal property; in addition, the material component shape coefficient M, convection The change of heat transfer coefficient and porosity have a significant influence on the steady state thermal stress field of the material plate under different mechanical boundary conditions.The results provide an accurate theoretical basis for the design and application of this material.Figure 4 and Table 1 Participation 8.