Numerical Calculation of Local Adhesive Wear in Machine Elements Under Boundary Lubrication Considering the Surface Roughness

Terwey, Jan Torben; Berninger, S.; Burghardt, Gero; Jacobs, Georg; Poll, Gerhard

doi:10.1007/978-981-13-0411-8_71

Cited by 3 publications

(6 citation statements)

References 7 publications

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“…Furthermore, an experimental validation of the wear model on real machine elements will be the subject of future works. As already shown in [2], wear in machine elements shows several effects, which are not considered in this paper. Nevertheless, experiments were already carried out on thrust roller bearings in [2] and show a basic agreement of experimental and simulation results.…”

Section: Discussionmentioning

confidence: 99%

“…As already shown in [2], wear in machine elements shows several effects, which are not considered in this paper. Nevertheless, experiments were already carried out on thrust roller bearings in [2] and show a basic agreement of experimental and simulation results. The experimental part was conducted using an FE8 test rig [20], Figure 16.…”

Section: Discussionmentioning

confidence: 99%

“…This work focusses on the numerical determination of the Archard wear coefficient K and the numerical calculation of adhesive wear in local resolution (as it was already presented in [2]). The pressure distribution, taking rough surfaces into account and being one of the main drivers for the occurrence of wear, will be calculated for both dry and mixed lubricated contacts.…”

Section: Introductionmentioning

confidence: 99%

“…Experimental (a) and simulation results (b), FE8 test rig[2]. Kinematics in test bearings (c).Author Contributions: Conceptualization, J.T.T.…”

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confidence: 99%

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Energy-Based Modelling of Adhesive Wear in the Mixed Lubrication Regime

et al. 2020

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Adhesive wear in dry contacts is often described using the Archard or Fleischer model. Both provide equations for the determination of a wear volume, taking the load, the sliding path and a set of material parameters into account. While the Fleischer model is based on energetic approaches, the Archard formulation uses an empirical factor—the wear coefficient—describing the intensity of wear. Today, a numerical determination of the wear coefficient is already possible and both approaches can be deduced to a local accumulation of friction energy. The aim of this work is to enhance existing energy-based wear models into the mixed lubrication regime. Therefore, the pressure distribution within the contact area will be determined numerically taking real surface topographies into account. The emerging contact area will be divided into one part of solid and a second part of elastohydrodynamically lubricated (EHL) contacts. Based on the resulting pressure and shear stress distribution, the formation of micro cracks within the loaded volume will be described. Determining a critical number of load cycles for each asperity, a locally resolved wear coefficient will be derived and the local wear depth calculated.

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Section: Discussionmentioning

confidence: 99%

Section: Discussionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

“…Experimental (a) and simulation results (b), FE8 test rig[2]. Kinematics in test bearings (c).Author Contributions: Conceptualization, J.T.T.…”

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confidence: 99%

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Energy-Based Modelling of Adhesive Wear in the Mixed Lubrication Regime

et al. 2020

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“…Sfantos et al [12] suggested a boundary element formulation for three-dimensional dry sliding wear based on Archard's model, which was applied to a pin-on-disc contact as well as to a hip arthroplasty wear problem. As aforementioned approaches did not take deterministic surface topography into account, Terwey et al [13,14] implemented a contact and wear model based upon the half-space theory for boundary lubricated thrust roller bearings, considering surface roughness. Thereby, the wear coefficient of Archard's law was determined using continuum damage mechanics (CDM).…”

Section: Of 21mentioning

confidence: 99%

Numerical Modeling of Wear in a Thrust Roller Bearing under Mixed Elastohydrodynamic Lubrication

et al. 2020

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Increasing efforts to reduce frictional losses and the associated use of low-viscosity lubricants lead to machine elements being operated under mixed lubrication. Consequently, wear effects are also gaining relevance. Appropriate numerical modeling and predicting wear in a reliable manner offers new possibilities for identifying harmful operating conditions or for designing running-in procedures. However, most previous investigations focused on simplified model contacts and the wear behavior of application-oriented contacts is relatively underexplored. Therefore, the contribution of this paper was to provide a numerical procedure for studying the wear evolution in the mixed elastohydrodynamically lubricated (EHL) roller/raceway contact by coupling a finite element method (FEM)-based 3D EHL model with surface topography changes following a local Archard-type wear model, a Greenwood–Williamson-based load-sharing approach and the Sugimura surface adaption model. This study applied the operating conditions of an 81212 thrust roller bearing, considering realistic geometry and locally varying velocities. The calculated wear profiles in the raceway featured asymmetries, which were in good agreement with the experimental results reported in the literature and could be correlated with the velocity and slip distribution. In addition, the effects of speed, load and oil viscosity were investigated by means of four load cases and two lubricants, demonstrating the broad range of applying the numerical approach.

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Topography characterization of friction pairs during the real-time wear process in dry condition

Liao,

Liu,

2024

Tribology International

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Numerical Calculation of Local Adhesive Wear in Machine Elements Under Boundary Lubrication Considering the Surface Roughness

Cited by 3 publications

References 7 publications

Energy-Based Modelling of Adhesive Wear in the Mixed Lubrication Regime

Energy-Based Modelling of Adhesive Wear in the Mixed Lubrication Regime

Numerical Modeling of Wear in a Thrust Roller Bearing under Mixed Elastohydrodynamic Lubrication

Topography characterization of friction pairs during the real-time wear process in dry condition

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