A peridynamic creep–fatigue model is proposed to study creep–fatigue mechanical responses and damage behaviors. A non-unified constitutive model is reformulated in a nonlocal form in the peridynamic-based framework. A probabilistic peridynamic damage criterion is proposed for characterizing creep–fatigue damage. The simulated mechanical responses are in good agreement with the results of creep–fatigue experiments conducted at high temperatures, which confirms the accuracy of the model. In addition, the damage evolution and morphology are well characterized by the model, and the damage mechanism is revealed. The model exhibits excellent potential for simulating nonlinear damage behaviors.

中文翻译：

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用于蠕变疲劳行为和损伤演化的非普通状态近场动力学模型

提出了近场动力学蠕变疲劳模型来研究蠕变疲劳机械响应和损伤行为。在基于近场动力学的框架中，以非局域形式重新表述了非统一本构模型。提出了一种概率近场动力学损伤准则来表征蠕变疲劳损伤。模拟的机械响应与高温蠕变疲劳实验的结果非常吻合，这证实了模型的准确性。此外，该模型很好地表征了损伤演化和形态，揭示了损伤机制。该模型在模拟非线性损伤行为方面表现出巨大的潜力。