Abstract The mesoscale continuum damage model for laminated composites that has been developed for the past 10 years at AMADE research group is extended for fatigue life and residual strength predictions. The same intra-laminar damage mechanisms are considered by means of the LaRC04 failure criteria, but a new set of functions are introduced to account for the degradation of the material under fatigue loads. The cycle jump approach is adopted within the finite element code to reduce the computational cost. In the follow-up paper part IV (Llobet et al., submitted for publication), the computational model is validated by simulating the progressive failure mechanisms of open-hole and double-edge notched specimens under static, tension-tension fatigue and residual strength load cases. All the experimental data is also described in detail in the accompanying part.

中文翻译：

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复合材料层压板的连续损伤模型：第三部分 - 疲劳

摘要 AMADE课题组开发了近10年的层状复合材料中尺度连续损伤模型，用于疲劳寿命和残余强度预测。通过 LaRC04 失效准则考虑了相同的层内损伤机制，但引入了一组新函数来解释材料在疲劳载荷下的退化。在有限元代码中采用循环跳跃的方法来降低计算成本。在后续论文第 IV 部分（Llobet 等人，提交出版）中，通过模拟静力、拉拉疲劳和残余强度下开孔和双刃缺口试样的渐进破坏机制来验证计算模型载荷工况。