Abstract A 3D finite element (FE) model was developed to investigate the effects of refurbishing on rolling contact fatigue (RCF) behavior of through-hardened bearing steel in a circular contact. In this investigation, the material degradation due to fatigue in original and refurbished domains was modeled using continuum damage mechanics (CDM). Material damage, crack initiation, and propagation in a circular contact were modeled to estimate the fatigue life of original and refurbished domains using CDM. RCF lives of pristine domains were predicted to define the baseline for the through-hardened steel. Then, a layer of material was removed to simulate the refurbishment while the accumulated damage for a set number of contact cycles was preserved in the domain. The refurbished domains were subjected to RCF cycles using the 3D FE model until a crack reached the surface indicating final life. A parametric study was conducted to evaluate the influence of material removal depth, loading cycles before refurbishing, applied load, and spall formation in the circular contact. The model results demonstrated that refurbishing increased fatigue life. Higher fatigue cycles before refurbishing and greater regrinding depth enhanced the total fatigue life. Furthermore, as expected, increasing the applied load reduced the fatigue life extension of restored domains.

中文翻译：

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用于研究翻新对滚动接触疲劳影响的 3D 有限元模型

摘要 开发了一个 3D 有限元 (FE) 模型来研究翻新对圆形接触中淬透轴承钢的滚动接触疲劳 (RCF) 行为的影响。在本次调查中，使用连续损伤力学 (CDM) 对原始域和翻新域中由于疲劳引起的材料退化进行建模。对圆形接触中的材料损坏、裂纹萌生和传播进行建模，以使用 CDM 估算原始域和翻新域的疲劳寿命。预计原始域的 RCF 寿命将定义完全硬化钢的基线。然后，去除一层材料以模拟翻新，同时在域中保留一定数量的接触循环的累积损坏。使用 3D FE 模型对翻新的域进行 RCF 循环，直到裂纹到达表面，表明最终寿命。进行了参数研究以评估材料去除深度、翻新前的加载循环、施加的载荷和圆形接触中的剥落形成的影响。模型结果表明，翻新增加了疲劳寿命。翻新前更高的疲劳周期和更大的重磨深度提高了总疲劳寿命。此外，正如预期的那样，增加施加的载荷会降低恢复域的疲劳寿命延长。模型结果表明，翻新增加了疲劳寿命。翻新前更高的疲劳周期和更大的重磨深度提高了总疲劳寿命。此外，正如预期的那样，增加施加的载荷会降低恢复域的疲劳寿命延长。模型结果表明，翻新增加了疲劳寿命。翻新前更高的疲劳周期和更大的重磨深度提高了总疲劳寿命。此外，正如预期的那样，增加施加的载荷会降低恢复域的疲劳寿命延长。