Craze and crack propagation in glassy polymers under cyclic mode I loading are investigated by employing a recently developed continuum-micromechanical model for crazing. This model accounts for the local morphology change from microvoids to fibrils during craze initiation, viscoplastic drawing of bulk material into fibrils, and viscoelastic creep recovery of the fibrillated craze matter during unloading. To ensure consistency between the bulk and craze model parameters, the material parameters of the craze model are normalised and calibrated based on a hybrid approach integrating experimental findings from the literature and molecular dynamics results. This yields a generic, yet representative glassy polymer response.

中文翻译：

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使用分子动力学信息连续体模型分析循环载荷下玻璃聚合物中的 I 型裂纹扩展


通过采用最近开发的连续微机械模型进行裂纹处理，研究了循环模式 I 加载下玻璃状聚合物中的裂纹和裂纹扩展。该模型解释了裂纹起始过程中从微孔到原纤维的局部形态变化、散装材料的粘塑性拉丝以及卸载过程中原纤化裂纹物质的粘弹性蠕变恢复。为了确保本体模型参数和裂纹模型参数之间的一致性，裂纹模型的材料参数根据混合方法进行归一化和校准，该方法结合了文献中的实验结果和分子动力学结果。这会产生通用但具有代表性的玻璃状聚合物响应。