Research Article

Predicting Fatigue Life for Finite Line Contact under Starved Elastohydrodynamic Lubrication Condition

Table 1

Relevant parameters of finite line contact pair and lubrication.

ParametersSpecification

Ambient viscosity of lubricant, η0 (Pa·s)0.08
Ambient density of lubricant, ρ0 (kg/m3)870
Density of solids, ρ1,2 (kg/m3)7850
Specific heat of lubricant, cf (J·Kg−1 K−1)2000
Specific heats of solids, c1,2 (J·Kg−1 K−1)470
Thermal conductivity of lubricant, kf (W·m−1 K−1)0.14
Thermal conductivities of solids, k1,2 (W·m−1 K−1)46
Viscosity-pressure coefficient, α (GPa−1)22
Viscosity-temperature coefficient, βT (K−1)0.0476
Equivalent elastic modulus, E′ (GPa)226
Nominal Hertzian contact pressure, pH (GPa)0.6
Angular velocity of roller 1, ω1 (rad/s)183.3
Ambient temperature, T0 (K)303
Characteristic shear stress, τ0 (MPa)4
Roller radius, R1/R2 (mm)60/30
Modification radius, r1/r2 (mm)30/20
Total length and modification length, l/lx (mm)20.0/1.0