Thickness calculation (Newtonian lubricant)
Lubrication in forming
Article REF: M3017 V1
Thickness calculation (Newtonian lubricant)
Lubrication in forming

Author : Éric FELDER

Publication date: December 10, 2008, Review date: August 24, 2021 | Lire en français

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2. Thickness calculation (Newtonian lubricant)

The aim here is to provide formulas for estimating the order of magnitude of lubricant film thickness and describing lubricant film morphology.

For this purpose, we adopt the following simplifying assumptions:

  • thermopiezoviscous lubricant, viscosity (Δθ is the temperature increase above a reference temperature θ 0 ) :

    η=η0exp(γpδΔθ)( 1 )

    with :

    ...
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