Friction and scoring under the conditions of Simultaneous rolling and sliding of bodies

Drozdov, Yu. N.; Gavrikov, Y.A.

doi:10.1016/0043-1648(68)90177-4

Cited by 53 publications

(37 citation statements)

References 3 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…About the same time, Benedict and Kelley [7], O'Donoghue and Cameron [8], and Drozdov and Gavrikov [9] derived an empirical friction model based on a set of twin-disk experiments, which included the effects of sliding and rolling velocity at the contact point, lubricant viscosity, and the radius of curvature of the contact. More recently, several analytical studies [10][11][12] applied the constant (uniform) friction coefficient assumption to investigate the frictional effect on the gear dynamic behavior.…”

Section: Introductionmentioning

confidence: 99%

Enhanced friction model for high-speed right-angle gear dynamics

et al. 2011

View full text Add to dashboard Cite

The modeling of elastohydrodynamic lubrication friction and the analysis of its dynamic effect on right-angle gears, such as hypoid and spiral bevel types are performed in the present study. Unlike the classically applied empirical constant coefficient of friction at the contacting tooth surfaces, the enhanced physics-based gear mesh friction model is both spatial and time-varying. The underlying formulation assumes mixed elastohydrodynamic lubrication (EHL) condition in which the division and load distribution between the full film and asperity contact zones are determined by the film thickness ratio and load sharing coefficient. In the proposed time-varying friction model, the calculation of friction coefficient is performed at each contact grid inside the instantaneous contact area that is being subjected to mineral oil lubrication. The effective friction coefficient and directional parameters synthesized from the net frictional and normal contact forces are then incorporated into a nonlinear time-varying right-angle gear dynamic model. Using this model, the effect of friction on the gear dynamic response due to the transmission error and mesh excitations is analyzed. Also, parametric studies are performed by varying torque, surface roughness and lubrication properties to understand the salient role of tooth sliding friction in gear dynamics. The simulation results are included. But experimental verification is needed.

show abstract

Section: Introductionmentioning

confidence: 99%

Enhanced friction model for high-speed right-angle gear dynamics

et al. 2011

View full text Add to dashboard Cite

show abstract

“…Benedict and Kelley (2) Drozdov and Gavrikov (3) ISO TC60 (4) Misharin (5) O'donoghue and Cameron (6) …”

Section: Journal Of Advanced Mechanical Design Systems and Manufactmentioning

confidence: 99%

Estimation of Sliding Loss in a Parallel-Axis Gear Pair

Ratanasumawong

Asawapichayachot

Phongsupasamit

et al. 2012

JAMDSM

View full text Add to dashboard Cite

The meshing model and the method used for estimation of sliding loss in a parallel-axis gear pair are presented. First the sliding loss model for single tooth meshing spur gear is constructed. The sliding loss is attributed to the deviation in direction of force from the line of action due to friction. Afterwards the sliding loss of a helical gear pair is considered. The helical gear is modeled as the multi-section spur gears aligned slantwise along with base helix angle. Thus the sliding loss of each section can be considered as same as the loss of the spur gear pair. Then the total sliding loss is estimated by combining the losses of all sections together. To verify the method, the estimated results were compared with the experimental results and estimated results done by the other researchers. The estimated results agree with the experimental results. The sliding loss increases with loads and speeds. The gear with larger module has higher sliding loss. Increasing the helix angle, the sliding loss will be increased, but increasing the transverse pressure angle the sliding loss will be decreased. Various empirical formulae of friction coefficient are used in this paper, and the accuracies of various formulae are shown.

show abstract

“…Hence, a constant coefficient of friction cannot be assumed as in some reported cases, 12,13 nor the use of empirical formulae. [14][15][16][17] Another approach is proposed by He et al, 18 Velex et al 19,20 and Kar and Mohanty, 21 describing friction as a function of the length of the line of contact for the meshing of spur or helical gear teeth pairs. It is more accurate to represent the meshing of gear problem as lubricated conjunctions as highlighted by De la Cruz et al 11 for the case of helical gears.…”

Section: Introductionmentioning

confidence: 99%

Non-Newtonian mixed thermo-elastohydrodynamics of hypoid gear pairs

Mohammadpour

Theodossiades

Rahnejat

et al. 2017

Proceedings of the Institution of Mechanical Engineers, Part J:

View full text Add to dashboard Cite

Transmission efficiency is the main objective in the development of vehicular differential systems, comprising hypoid gear pairs. The overall aim is to contribute to improved vehicle fuel efficiency and thus levels of harmful emissions for modern desired eco-drive axles. Detailed predictive analysis plays an important role in this quest, particularly under realistic operating conditions, comprising high contact loads and shear rates. Under these conditions, the hypoid gear pairs are subject to mixed non-Newtonian thermo-elastohydrodynamic conditions, which is the approach undertaken in this paper. Such an approach for hypoid gear pair has not hitherto been reported in the literature.

show abstract

Friction and scoring under the conditions of Simultaneous rolling and sliding of bodies

Cited by 53 publications

References 3 publications

Enhanced friction model for high-speed right-angle gear dynamics

Enhanced friction model for high-speed right-angle gear dynamics

Estimation of Sliding Loss in a Parallel-Axis Gear Pair

Non-Newtonian mixed thermo-elastohydrodynamics of hypoid gear pairs

Contact Info

Product

Resources

About