摘要
The traction behavior of space lubricating oil No. 4116 was measured and analyzed at various oil inlet temperatures below 0 ℃ and various rolling speeds under normal loads by a test rig simulating the operating conditions of space bearings. A traction coefficient calculation model was presented. The rheological property and rheological parameters of the lubricant at a low oil inlet temperature were analyzed based on the Tevaarwerk-Johnson model. The results showed that the lubricating oil No. 4116 was sensitive to the rolling speed and had lower sensitivity to the normal load. This lubricating oil is more suitable for applications under high speed when it is used below 0 ℃. It behaves as an elastic-plastic fluid operating below 0 ℃. Both the average limiting shear stress and the average elastic shear modulus have a negative correlation with the rolling speed and oil inlet temperature and have a positive correlation with the normal load.
The traction behavior of space lubricating oil No. 4116 was measured and analyzed at various oil inlet temperaturesbelow 0 ℃ and various rolling speeds under normal loads by a test rig simulating the operating conditions of spacebearings. A traction coefficient calculation model was presented. The rheological property and rheological parameters of thelubricant at a low oil inlet temperature were analyzed based on the Tevaarwerk-Johnson model. The results showed that thelubricating oil No. 4116 was sensitive to the rolling speed and had lower sensitivity to the normal load. This lubricating oilis more suitable for applications under high speed when it is used below 0 ℃. It behaves as an elastic-plastic fluid operatingbelow 0 ℃. Both the average limiting shear stress and the average elastic shear modulus have a negative correlation withthe rolling speed and oil inlet temperature and have a positive correlation with the normal load.
基金
supported by the National Science Foundation of China (Nos. 51105131 and 51475143)
the Henan Provincial Key Scientific and Technological Project (No. 142102210110)
the Tianjin Science and Technology Support Program
