Effects of Viscoelasticity of Greases on Lubrication

润滑脂粘弹性对润滑的影响

• 批准号: 03650133
• 负责人: HAYASHI Hirotsugu
• 金额: $ 1.34万
• 依托单位: Waseda University
• 依托单位国家: 日本
• 项目类别: Grant-in-Aid for General Scientific Research (C)
• 财政年份: 1991
• 资助国家: 日本
• 起止时间: 1991 至 1992
• 项目状态: 已结题
• 来源: https://kaken.nii.ac.jp/grant/KAKENHI-PROJECT-03650133/
• 关键词: Grease; Lubrication; Tribology; Rheology; Viscoelastic Fluids; Bingham Fluids; Bearings; レオロジ; 潤滑理論; グリ-ス; トライボロジ

The object of this project is to establish an analytical procedure for fluid film lubrication with greases, because a grease is used in practice due to easy lubrication system as compared with that by other lubricants such as oil.A rheology equation supposed in this project, which consists of one slider and two nonlinear dashpots and two non-linear springs is investigated experimentally for the grease.Modified Reynolds equations are derived employing the rheology equation mentioned above. The equations are different types whether the stress of grease in lubricating film is greater than yield stress or not, that is core occurs or not.By an application of the modified Reynolds equations to the journal bearings, the bearing performance is clarified theoretically. Bingham characteristics effects on the core formations and viscoelastic behavior influences on the phase lag of pressure for squeeze action. The theoretical results are compared with the experiments of squeeze bearings using greases as a lubricant.

本文的目的是建立一种润滑脂液膜润滑的分析方法，因为润滑脂在实际中使用时，由于润滑系统简单，与其它润滑剂（如油）相比，它由一个滑块、两个非线性阻尼器和两个非线性阻尼器组成，对润滑脂的线性弹簧进行了实验研究，并根据上述流变方程推导出修正的雷诺方程。无论润滑油膜中的润滑脂应力是否大于屈服应力，即是否出现核心，这些方程都是不同类型的，通过将修正的雷诺方程应用于滑动轴承，从理论上阐明了轴承的性能。宾汉特性对岩心地层的影响和粘弹性对挤压作用压力相位滞后的影响。理论计算结果与实验结果进行了比较。

项目成果

林 洋次: "ビンガム非線形粘弾性流体潤滑の研究" 日本機械学会論文集に発表予定.

Yoji Hayashi：“宾厄姆非线性粘弹性流体润滑的研究” 预定在日本机械工程学会会刊上发表。

林 洋次: "グリ-スの粘弾性特性が潤滑性能に及ぼす影響" 日本機械学会論文集.

Yoji Hayashi：“润滑脂粘弹性对润滑性能的影响”日本机械工程师学会会议录。

Hirotsugu Hayashi: "Experimental Studies on performance of journal bearings with greases as lubricants" Reprint of Conference of Japan Society for Design Engineering. No.92. 103-106 (1992)

Hirotsugu Hayashi：“以油脂为润滑剂的轴颈轴承性能的实验研究”日本设计工程学会会议重印。

林 洋次: "グリースを用いたジャーナル軸受の性能実験" 日本設計工学会講演論文集. 92. 103-106 (1992)

Yoji Hayashi：“使用润滑脂的轴颈轴承的性能实验”日本设计工程学会论文集 92. 103-106 (1992)。

林 洋次: "グリースを用いたジャーナル軸受の性能解析" 日本設計工学会講演論文集に発表予定.

Yoji Hayashi：“使用润滑脂的轴颈轴承的性能分析” 预定在日本设计工程师学会会刊上发表。