Abstract According to the analysis of the damage morphology of the failure insert in the heavy-duty milling process of the water chamber head, fatigue damage is one of the main failure forms of the insert. Fatigue is the evolution process of inserts damage and impact fracture is the ultimate failure forms of inserts fatigue damage. According to the frequency that the insert cuts into and out workpiece, it is determined that insert is subjected to the low cycle load characteristic. Based on damage mechanics, the low cycle fatigue damage model is studied, and the fatigue evolution process of the insert material is numerically described. The damage parameters of cemented carbide material in the model are determined by simulation method. Fatigue simulation is carried out to determine the fatigue damage limit of the insert under cyclic loading, which provides theoretical basis and data foundation for the qualitative and quantitative research on the damage failure process of insert.

中文翻译：

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硬质合金刀片在水室封头重切削过程中的疲劳损伤分析

摘要 根据水室头重铣削过程中失效刀片的损伤形态分析，疲劳损伤是刀片的主要失效形式之一。疲劳是刀片损伤的演化过程，冲击断裂是刀片疲劳损伤的最终失效形式。根据刀片切入和切出工件的频率，确定刀片承受低周载荷特性。基于损伤力学，研究了低周疲劳损伤模型，数值描述了刀片材料的疲劳演化过程。模型中硬质合金材料的损伤参数是通过仿真方法确定的。进行疲劳模拟以确定循环加载下刀片的疲劳损伤极限，