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在变温非线性运动强化规律所描述的高温合金材料热机械疲劳应力－应变循环特性的基础上，讨论了应变控制的循环相关热机械疲劳寿命预测技术．所建模型采用了由应变能密度表示的损伤参数，并且引入了温度损伤系数，考虑了温度变化范围以及温度循环和应变循环相位关系对减劳寿命的影响．在确定模型的一些参数时，采用等温力学试验和疲劳试验的数据，为把等温疲劳研究成果推广到变温疲劳分析领域，开辟了新的途径．
On the basis of the thermomechanical fatigue stress-strain cycle characteristics of superalloy materials, which are described by the laws of variable temperature nonlinear motion, the cyclic related thermomechanical fatigue life prediction techniques for strain control are discussed. The proposed model uses the damage parameters expressed by the strain energy density, and introduces the temperature damage coefficient, taking into account the range of temperature changes and the influence of the phase relationship between temperature cycling and strain cycling on the fatigue life. In the determination of some parameters of the model, the data of isothermal mechanical tests and fatigue tests have been used to open up new avenues for generalizing the research results of isothermal fatigue to the field of variable temperature fatigue analysis.