国外文献 > 1.轴承 > 3. 材料与制造 > 轴承材料
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| 标 题： |
A rolling contact fatigue life prediction model for bearing steel considering its gradient structure due to cyclic hardening
考虑循环硬化引起的梯度结构的轴承钢滚动接触疲劳寿命预测模型 |
| 作 者： |
Zhao, Yue
Wang, Xi
Guo, Rubing
Sun, Shouguang |
| 关键词： |
Rolling contact fatigue [滚动接触疲劳]
gradient structure [ 梯度结构]
multiaxial fatigue criterion [ 多轴疲劳准则]
bearing steel [ 轴承钢]
MULTIAXIAL FATIGUE [ 多轴疲劳]
PART II [ 第二部分]
MICROSTRUCTURE [ 微结构]
CRITERION [ 标准]
BEHAVIOR [ 行为]
FRACTURE [ 骨折]
HARDNESS [ 硬度]
STRESS [ 压力]
RUBBER [ 橡胶]
LIMIT [ 限制] |
| 出版年： |
2024 |
| 期刊名： |
International Journal of Damage Mechanics
国际损伤力学杂志 |
| 年卷期： |
2024, vol.33, no.4 |
| 摘 要： |
This paper presents a rolling contact fatigue life prediction model for bearing steel. In the initial stage of rolling contact, the gradient structure appears in the subsurface region of bearing steel and the hardness shows a gradient distribution along the contact depth direction due to the roller compaction effect. This indicates that the fatigue resistance of bearing steel varies in the subsurface region. Besides, each subsurface material volume element is subject to different stress cycles. Based on Weibull theory, the survival possibility of subsurface volume elements is formulated. Then the rolling contact fatigue life is evaluated considering the stress state and anti-fatigue performance of each elementary volume of the subsurface material. According to the phenomenon and assumption, the model proposed for gradient material was applied in the rolling contact fatigue life prediction of the bearing steel GCr15 and validated with the fatigue experiment data in the open literature. Furthermore, the accuracy of the proposed model results was compared with the traditional empirical rolling contact fatigue life prediction models.
本文提出了一种轴承钢的滚动接触疲劳寿命预测模型。在滚动接触初期，轴承钢的表层区域会出现梯度结构，由于滚子压实效应，硬度沿接触深度方向呈梯度分布，表明轴承钢的疲劳强度在表层区域存在变化。此外，每个表层材料体积元均承受不同的应力循环。基于威布尔理论，建立了表层体积元的生存可能性公式。随后，结合各表层材料基本体积元的应力状态和抗疲劳性能，对滚动接触疲劳寿命进行评估。根据该现象及假设，所提出的梯度材料模型被应用于GCr15轴承钢的滚动接触疲劳寿命预测，并通过文献中的疲劳实验数据进行了验证。最后，将本模型结果的准确性与传统经验性的滚动接触疲劳寿命预测模型进行了比较。 |
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