Ch. Venner et Aa. Lubrecht, TRANSIENT ANALYSIS OF SURFACE-FEATURES IN AN EHL LINE CONTACT IN THE CASE OF SLIDING, Journal of tribology, 116(2), 1994, pp. 186-193
This paper investigates in detail the influence of two different surfa
ce topographies on the pressure distribution and film thickness profil
e of a highly loaded (maximum Hertzian pressure 2 GPa) line contact as
a function of the slide to roll ratio. To accomplish this the transie
nt Reynolds equation is solved both in space and time. The first featu
re under investigation is localized, a so-called indentation, the seco
nd one is global: waviness. The observed lack of synchronism in the ex
tremes of pressure and film thickness is explained theoretically by an
alyzing the Reynolds equation. The minimum and average film thickness
values in case of waviness are analyzed as a function of the slide to
roll ratio, amplitude, and wavelength. Depending on the slide to roll
ratio, the transient solutions may differ significantly from their sta
tionary counterparts. In such cases, therefore, a transient analysis c
annot be avoided.