| 流变行为影响接触疲劳的特征 |
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| 引用本文： | 孙德志.流变行为影响接触疲劳的特征[J].东北大学学报(自然科学版),1992(3). |
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| 作者姓名： | 孙德志 |
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| 作者单位： | 东北工学院机械二系 |
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| 摘 要： | 通过对滚子接触疲劳试验数据的分析,探讨了润滑剂的流变行为对疲劳点蚀的影响。提出了裂纹扩展机制。表面裂纹的萌生期取决于弹性流体动力润滑的膜厚比。裂纹扩展速率取决于润滑剂的流变行为。用施加外载荷的方法验证了裂纹萌生和扩展中的弹流效应和流变效应。
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| 关 键 词： | 流变行为 疲劳点蚀 裂纹扩展 膜厚比 粘度 |
Characteristics of Efffect of Rheologic Behaviour on Contact Fatigue |
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| Sun Dezhi.Characteristics of Efffect of Rheologic Behaviour on Contact Fatigue[J].Journal of Northeastern University(Natural Science),1992(3). |
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| Authors: | Sun Dezhi |
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| Abstract: | The effect of rheologic behaviour of lubricant on fatigue pit-tings was investigated by means of the data obtained from contact fatigue testusing rollers. The mechanism of crack propagation is thus suggested. It isrevealed that the initiation duration of surface fatigue cracks depends on thespecific film thickness which is calculated from EHL theory, and the prop-agating rate of cracks depends on the rheologic behaviour of the lubricantused. Both EHL and rheology effects in crack in itiation propagation processwere verified on load. |
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| Keywords: | rheologic behaviour fatigue pittings crack propagation specific film thickness viscosity |
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