Fatigue wear as a rate process

Rozeanu, L.

doi:10.1016/0043-1648(63)90201-1

Cited by 32 publications

(8 citation statements)

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“…I n particular, it appears that seizure i s aery unlikely to occur during acceleration but i s possible during deceleration. GENERAL I t is convenient to consider the friction system as a population of contacts that can be treated statistically as a canonical ensemble (1).…”

Section: Rozeanumentioning

confidence: 99%

A Model for Seizure

Rozeanu

1973

A S L E Transactions

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Section: Rozeanumentioning

confidence: 99%

A Model for Seizure

Rozeanu

1973

A S L E Transactions

Self Cite

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“…Jia et al [18] proposed a micropitting fatigue wear model to simulate the wear in rollingsliding conformal contact under mixed elasto-hydrodynamic lubrication. A view that wear is substantially a microfatigue phenomenon was expressed by Kerridge and Lancaster [19], Rozeanu [20], and Kragelsky et al [21]. However, the lubricated wear model of journal bearings in mixed EHL lubrication based on fatigue wear theory was not enough researched in these studies considering the manageable surface roughness parameters.…”

Section: Introductionmentioning

confidence: 99%

A lubricated wear model for determining wear surface geometry on journal-bearing surfaces

Jia

Wang

et al. 2020

Surf. Topogr.: Metrol. Prop.

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In this study, the friction fatigue mechanism is employed to describe the quantitative information concerning characterization of the steady-state wear process in journal bearings, which combined with the load sharing notion in mixed lubrication. For this approach, the asperity stress cycle number is estimated by combining the statistical dynamic contact model with the mixed elasto-hydrodynamic lubrication (EHL) simulation model. The maximum shear stress theory is applied together with the subsurface stress distribution of contact asperities to predict the average volume of wear fragment for asperity. Quantitative analysis of steady-state wear profiles for the bearing reveals that the maximum wear depth appears at both ends of the bearing. With the increase of running time, the wear gradually extends to the bearing centre, and the wear rate rapidly decreases to a certain value and then tends to be stable. With this lubricated wear model, the influences of surface roughness, external load, and shaft speed are also discussed. The proposed wear simulation method is based on the interdisciplinary theory, which includes the description of surface micro-morphology (Gaussian rough surfaces), the friction fatigue theory for explaining the generation of wear debris, and the coupling effect of wear and lubrication that is expressed by considering the wear surface geometry in oil film thickness equation. Additionally, the simulation results and available experiment data are compared to demonstrate the fatigue wear modeling scheme. NomenclatureREVISED

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“…Friction and wear are considered linked processes in tribology and are often studied in conjunction with one another as they can elucidate temporal transitions (Yoshioka, 1986;Wang and Scholz, 1994;Hirose et al, 2012;Boneh et al, 2013;Boneh and Reches, 2018). Wear is largely controlled by the failure of asperity contacts (Archard, 1953;Rabinowicz, 1965;Bowden and Tabor, 2001) and results from a mix of complex mechanisms: adhesive, effective at asperity contacts (Archard, 1953); abrasive, from asperity ploughing (Moore and King, 1980); delamination, where damage occurs away from the sliding surface (Fleming and Suh, 1977); fatigue, from repeating events (Rozeanu, 1963); and corrosive due to chemical weakening (Watson et al, 1995). Archard (1953) studied the global wear of faults and introduced Archard's equation.…”

Section: Introductionmentioning

confidence: 99%

Frictional Behaviour, Wear and Comminution of Synthetic Porous Geomaterials

et al. 2020

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During shearing in geological environments, frictional processes, including the wear of sliding rock surfaces, control the nature of the slip events. Multiple studies focusing on natural samples have investigated the frictional behaviour of a large suite of geological materials. However, due to the varied and heterogeneous nature of geomaterials, the individual controls of material properties on friction and wear remain unconstrained. Here, we use variably porous synthetic glass samples (8, 19 and 30% porosity) to explore the frictional behaviour and development of wear in geomaterials at low normal stresses (≤1 MPa). We propose that porosity provides an inherent roughness to material which wear and abrasion cannot smooth, allowing material at the pore margins to interact with the slip surface. This results in an increase in measured friction coefficient from <0.4 for 8% porosity, to <0.55 for 19% porosity and 0.6–0.8 for 30% porosity for the slip rates evaluated. For a given porosity, wear rate reduces with slip rate due to less asperity interaction time. At higher slip rates, samples also exhibit slip weakening behaviour, either due to evolution of the slipping zone or by the activation of temperature-dependent microphysical processes. However, heating rate and peak temperature may be reduced by rapid wear rates as frictional heating and wear compete. The higher wear rates and reduced heating rates of porous rocks during slip may delay the onset of thermally triggered dynamic weakening mechanisms such as flash heating, frictional melting and thermal pressurisation. Hence porosity, and the resultant friction coefficient, work, heating rate and wear rate, of materials can influence the dynamics of slip during such events as shallow crustal faulting or mass movements.

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Fatigue wear as a rate process

Cited by 32 publications

References 0 publications

A Model for Seizure

A Model for Seizure

A lubricated wear model for determining wear surface geometry on journal-bearing surfaces

Frictional Behaviour, Wear and Comminution of Synthetic Porous Geomaterials

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