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Shock and Vibration
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Shock and Vibration
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2018
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Article
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Tab 5
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Research Article
Effect of Axial Vibration on Sliding Frictional Force between Shale and 45 Steel
Table 5
The expressions of dynamic friction coefficient under different lubrication conditions.
Medium
Fitting formula
Dynamic friction coefficient
Dry
Water
WBM
OBM
SBM