Research highlights ► Cohesive zone elements allow to model fatigue crack initiation and growth. ► An algorithm reducing extensively the simulation time with little loss of accuracy was developed. ► The variability inherent in the fatigue life was assessed using a random field model. ► Both crack initiation and propagation are described by the same model.

中文翻译：

---

使用内聚区元素模拟疲劳裂纹扩展的可变性

研究亮点 ► 内聚区元素允许模拟疲劳裂纹的萌生和扩展。► 开发了一种算法，可大大减少仿真时间，而精度损失很小。► 疲劳寿命固有的可变性是使用随机场模型评估的。► 裂纹萌生和扩展均由同一模型描述。