The Experts below are selected from a list of 1032 Experts worldwide ranked by ideXlab platform

Yanyan Chen - One of the best experts on this subject based on the ideXlab platform.

  • Influence of oil injection methods on the lubrication process of high speed spur gears
    Tribology International, 2018
    Co-Authors: Yanzhong Wang, Guanhua Song, Wentao Niu, Yanyan Chen
    Abstract:

    Abstract Computational fluid dynamics simulation is used to establish models for different oil injection methods: into-mesh and out-mesh injections. The simulation results concluded that when the gear Pitch Line Velocity is higher than the Velocity threshold, the oil jet cannot reach the meshing point when the out of mesh jet lubrication is used. When the ratio of the Pitch Velocity to the spray Velocity is less than 5, better lubrication are obtained by out of mesh jet lubrication. When the ratio of the Pitch Velocity to the spray Velocity is more than 5, into mesh jet lubrication can achieve better lubrication. Finally, the influence mechanism of different oil injection methods on lubrication process is revealed through theoretical analysis.

Yanzhong Wang - One of the best experts on this subject based on the ideXlab platform.

  • Influence of oil injection methods on the lubrication process of high speed spur gears
    Tribology International, 2018
    Co-Authors: Yanzhong Wang, Guanhua Song, Wentao Niu, Yanyan Chen
    Abstract:

    Abstract Computational fluid dynamics simulation is used to establish models for different oil injection methods: into-mesh and out-mesh injections. The simulation results concluded that when the gear Pitch Line Velocity is higher than the Velocity threshold, the oil jet cannot reach the meshing point when the out of mesh jet lubrication is used. When the ratio of the Pitch Velocity to the spray Velocity is less than 5, better lubrication are obtained by out of mesh jet lubrication. When the ratio of the Pitch Velocity to the spray Velocity is more than 5, into mesh jet lubrication can achieve better lubrication. Finally, the influence mechanism of different oil injection methods on lubrication process is revealed through theoretical analysis.

Guanhua Song - One of the best experts on this subject based on the ideXlab platform.

  • Influence of oil injection methods on the lubrication process of high speed spur gears
    Tribology International, 2018
    Co-Authors: Yanzhong Wang, Guanhua Song, Wentao Niu, Yanyan Chen
    Abstract:

    Abstract Computational fluid dynamics simulation is used to establish models for different oil injection methods: into-mesh and out-mesh injections. The simulation results concluded that when the gear Pitch Line Velocity is higher than the Velocity threshold, the oil jet cannot reach the meshing point when the out of mesh jet lubrication is used. When the ratio of the Pitch Velocity to the spray Velocity is less than 5, better lubrication are obtained by out of mesh jet lubrication. When the ratio of the Pitch Velocity to the spray Velocity is more than 5, into mesh jet lubrication can achieve better lubrication. Finally, the influence mechanism of different oil injection methods on lubrication process is revealed through theoretical analysis.

Wentao Niu - One of the best experts on this subject based on the ideXlab platform.

  • Influence of oil injection methods on the lubrication process of high speed spur gears
    Tribology International, 2018
    Co-Authors: Yanzhong Wang, Guanhua Song, Wentao Niu, Yanyan Chen
    Abstract:

    Abstract Computational fluid dynamics simulation is used to establish models for different oil injection methods: into-mesh and out-mesh injections. The simulation results concluded that when the gear Pitch Line Velocity is higher than the Velocity threshold, the oil jet cannot reach the meshing point when the out of mesh jet lubrication is used. When the ratio of the Pitch Velocity to the spray Velocity is less than 5, better lubrication are obtained by out of mesh jet lubrication. When the ratio of the Pitch Velocity to the spray Velocity is more than 5, into mesh jet lubrication can achieve better lubrication. Finally, the influence mechanism of different oil injection methods on lubrication process is revealed through theoretical analysis.

Arto Lehtovaara - One of the best experts on this subject based on the ideXlab platform.

  • experimental simulation of gear contact along the Line of action
    Tribology International, 2009
    Co-Authors: Jaakko Kleemola, Arto Lehtovaara
    Abstract:

    Abstract In highly loaded gears, lubricated rolling/sliding contact conditions change greatly along the Line of action. This leads to variation in gear frictional properties and to failures such as pitting and scuffing that take place in different positions along the tooth flank. Information on instant contact behavior is therefore very useful, but this kind of measurement in real gears is extremely complicated. Single spur gear geometry has been simulated at 38 steady-state measuring points along the Line of action using a twin-disc test device focusing on the friction coefficient and on temperature and lubrication conditions. Twin-disc simulations were adjusted to match real gear experiments by using similar maximum Hertzian pressure and surface velocities. The results show that the curve shapes for the mean friction coefficient as a function of Pitch Line Velocity are similar to the corresponding experimental results with real gears. Further, the calculated thermal Λ -values of real gears and the measured mean contact resistance correspond well. This approach shows potential for simulating gear friction and failure mechanisms along the Line of action.