**Correlation between pressure-viscosity coefficient and traction
coefficient of the base stocks in traction lubricants: A molecular
dynamic approach**

J Lu and QJ Wang and N Ren and FE Lockwood, TRIBOLOGY INTERNATIONAL, 134, 328-334 (2019).

DOI: 10.1016/j.triboint.2019.02.013

The lubricants for traction-continuously variable transmissions (t-CVT) could generate high traction under a high pressure, which requires the design of a special class of base stock molecules. This paper reports the development of a model, based on non-equilibrium molecular dynamics (NEMD) simulations, for estimating traction coefficients to facilitate the design of base stock molecules prior to their synthesis. The pressure-viscosity coefficients (alpha) of a number of base stocks in traction lubricants are calculated and the results are correlated with the corresponding traction coefficient tau. A linear alpha-tau correlation is obtained with a coefficient of determination of as high as 0.85.

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