Lubricant and use of the lubricant
A technology of lubricants and uses, applied in the directions of lubricating compositions, additives, petroleum industry, etc., can solve the problems of long grease service life and non-use, and achieve the effect of low friction
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[0058] The state R1 is followed by the so-called partial slip state or stick-slip state R2. Introducing a tangential force will show maximum shear stress at the outer annular region and minimum shear stress at the center of the contact. Slip will occur when the shear force is able to overcome the frictional force, and obviously this will first occur in the outer areas of contact. When the tangential force is limited, the high contact pressure at the center of contact and the resulting high friction prevents slippage. Therefore, sticking occurs in the center of contact and slip occurs in the outer areas. In the partial slip state R2, some of the energy is dissipated through slip and some is dissipated through elastic and plastic deformation of the asperities and meshing materials.
[0059] Then there is the so-called general slip regime R3, which is characterized by slip over the entire contact surface. As the tangential force increases (displacement amplitude increases) in ...
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