用宏观连续介质力学方法对航空燃气涡轮发动机定向结晶空心气冷叶片进行了热弹性蠕变分析。用Hill理论建立了各向异性材料的本构模型及其流动法则。对高温镍基合金DZ - 2 2在 75 0℃、85 0℃和 90 0℃进行了拉伸的蠕变试验 ,得到了各向异性材料的蠕变方程常数 ,从而用非线性有限元法计算了定向结晶整体叶片在 0 .1h、10h、30h、70h的蠕变行为 ,得到了最大等效蠕变应变值和最大等效蠕变应力值及其所在部位 The macro-continuum mechanics method was used to analyze the thermoelastic creep of directional gas-liquid cooled gas-cooled blades of an aero-gas turbine engine. With Hill theory, the constitutive model of anisotropic material and its flow law are established. The creep test of high temperature nickel - base alloy DZ - 2 2 at 75 0 ℃, 85 0 ℃ and 90 0 ℃ was carried out, and the creep equation constant of the anisotropic material was obtained. Then the nonlinear finite element method The creep behavior of the directional solidification leaf at 0. 1h, 10h, 30h and 70h was obtained. The maximum equivalent creep strain value and the maximum equivalent creep stress value and their locations