A two scale mixed lubrication wearing-in model, applied to hydraulic motors

Furustig, Joel; Almqvist, Andreas; Bates, Charles Anthony; Ennemark, Poul; Larsson, Roland

doi:10.1016/j.triboint.2015.04.033

Cited by 20 publications

(15 citation statements)

References 37 publications

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“…The adequacy of the model, which describes tribological changes in the geometry of the working surfaces of rotors in orbital hydraulic motors at wear [8], was confirmed by experimental studies. However, the motion of liquid along the feed channels of hydraulic motor was not studied.…”

Section: Literature Review and Problem Statementmentioning

confidence: 76%

“…Substituting expression (8) into expression (10), we obtain a theoretical working fluid flow rate in the distribution system:…”

Section: Fig 2 a Design Diagram Of The Distribution Zone Of The Dismentioning

confidence: 99%

“…The planetary hydraulic machines imply hydraulic machines that operate based on the principle of a planetary reducer, similar to orbital, gerotor, geroler machines, etc. [3][4][5][6][7][8]. These hydraulic machines are distinguished by low consumption of metal, compactness, good power characteristics, and are exploited as high-torque hydraulic motors for the drives of active working elements of self-propelled machinery.…”

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Designing the flow-through parts of distribution systems for the PRG series planetary hydraulic motors

Panchenko¹,

Voloshina²,

Boltyansky³

et al. 2018

EEJET

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Section: Literature Review and Problem Statementmentioning

confidence: 76%

“…Substituting expression (8) into expression (10), we obtain a theoretical working fluid flow rate in the distribution system:…”

Section: Fig 2 a Design Diagram Of The Distribution Zone Of The Dismentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Designing the flow-through parts of distribution systems for the PRG series planetary hydraulic motors

Panchenko¹,

Voloshina²,

Boltyansky³

et al. 2018

EEJET

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“…Akchurin and Bosman [24] developed a deterministic model to simulate the growth and wear of tribofilm. Furustig et al [25] developed a two-scale wearing-in model to study the running-in behavior of hydraulic motors in mixed lubrication. Their theory was experimentally verified.…”

Section: Introductionmentioning

confidence: 99%

Wear law in mixed lubrication based on stress-promoted thermal activation

Pei

Yang

et al. 2020

Friction

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Although several empirical wear formulas have been proposed, theoretical approaches for predicting surface topography evolution during sliding wear are limited. In this study, we propose a novel wear-prediction method, wherein the energy-based Arrhenius equation is combined with a mixed elastohydrodynamic lubrication (EHL) model to predict the point-contact wear process in mixed lubrication. The surface flash temperature and contact pressure are considered in the wear model. Simulation results are compared with the experimental results to verify the theory. The surface topography evolutions are observed during the wear process. The influences of load and speed on wear are investigated. The simulation results based on the Arrhenius equation relationship shows good agreement with the results of experiments as well as the Archard wear formula. However, the Arrhenius equation is more accurate than the Archard wear theory in some aspects, such as under high-temperature conditions. The results indicate that combining the wear formulas with the mixed EHL simulation models is an effective method to study the wear behavior over time.

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“…From a design point of view, it is important to be able to predict the topography evolution of surfaces in order to be able to predict their performance under different lubricating conditions. Several previous works consider wear prediction using Finite Element Methods (FEM) [10][11][12][13], Boundary Element Method (BEM) [14][15][16] and combined methods [17,18].…”

Section: Introductionmentioning

confidence: 99%

Numerical Study of the Effect of Tribofilm Kinetics and Its Hardness on the Roughness Evolution of the Substrate in Boundary Lubrication Regime

Ghanbarzadeh

Piras²,

Wilson

et al. 2019

Tribology Transactions

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A tribochemical modelling framework that considers the growth of tribofilm on the contacting surfaces has been used in this work. The model couples a fast contact mechanics model with the thermodynamics of interfaces and captures the growth of the tribofilm on the asperities. The model was shown to be able to capture the dynamics of a tribosystem and the evolution of surface topography. The model considers the effect of plastic deformation and wear in modifying the surface geometries. In a recent work of the authors, (Ghanbarzadeh et al. in Wear 2016) the same numerical model was validated against experiments of the Micropitting Rig (MPR) and the wear, topography and tribofilm thickness results were compared. In this work, while the validation of the model is presented, the effect of tribofilm kinetics and its hardness have been numerically studied to assess the evolution of surface roughness in a rolling sliding contact. Results suggest that the kinetics of the tribofilm growth significantly influences the roughness evolution with higher kinetics resulting in a rougher interface. Similarly the tribofilm hardness affect the roughness evolution and are more influential in the later stages of roughness evolution.

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A two scale mixed lubrication wearing-in model, applied to hydraulic motors

Cited by 20 publications

References 37 publications

Designing the flow-through parts of distribution systems for the PRG series planetary hydraulic motors

Designing the flow-through parts of distribution systems for the PRG series planetary hydraulic motors

Wear law in mixed lubrication based on stress-promoted thermal activation

Numerical Study of the Effect of Tribofilm Kinetics and Its Hardness on the Roughness Evolution of the Substrate in Boundary Lubrication Regime

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