The formula of the fatigue crack propagation rate was directly derived from the fatigue damage criterion.
通过疲劳损伤准则，导出疲劳裂纹稳定扩展速率的计算公式。
In this paper a new criterion for thermal fatigue damage was proposed to evaluate the thermal fatigue performances of metallic materials.
本文提出一种新的热疲劳损伤判据，用以评估金属材料的热疲劳性能。
Found non-linear fatigue damage equation and fatigue failure criterion of concrete under variable amplitude load, and analyze the influence of loading sequence on total fatigue life;
建立了混凝土非线性疲劳损伤方程和变幅荷载下的疲劳破坏准则，分析了加载次序效应对总疲劳寿命的影响；
The threshold value of damage and maximum strain are adopted as failure criterion to reflect fatigue failure and ductile failure respectively.
针对材料不同的失效模式，分别采用损伤变量门槛值和最大应变作为失效判据。
The threshold value of damage and maximum strain are adopted as failure criterion to reflect fatigue failure and ductile failure respectively.
针对材料不同的失效模式，分别采用损伤变量门槛值和最大应变作为失效判据。
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