Gear rattle dynamics under non-stationary conditions: The lubricant role

Diez-Ibarbia, A.; Rincón, Alfonso Fernández del; García, Pablo; Viadero, F.

doi:10.1016/j.mechmachtheory.2020.103929

Cited by 16 publications

(8 citation statements)

References 31 publications

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“…(18). The non-contact mesh and none-impact agrees with the conclusion from A Fernandez-Del-Rincon, et al[41,42]. Scenarios I and II indicate that the motion turns to NI when Ae is approximately below 20rad/s 2 when the STE is absent.…”

supporting

confidence: 85%

“…While comprehensive investigations were not found considering the influences of the periodical backlash and HDL meshing force simultaneously on the rattle severity and nonlinear dynamics. Although an initial comparison of the different HDL meshing force models has been accessed by the simple time trace [41,42], neither their influence on rattle dynamics and severity nor an experiment was not given. Consequently, no investigation depicted either the difference between different vibro-impact models or the coupling effects of the HDL force and STE under rattle conditions.…”

Section: Introductionmentioning

confidence: 99%

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Nonlinear dynamic behaviour and severity of lightly loaded gear rattle under different vibro-impact models and internal excitations

Zhou,

Shi,

Guo

et al. 2023

Nonlinear Dyn

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This investigation comprehensively compared the elastic contact and the modified stiff impact models, aiming for the lightly loaded backlash-induced gear rattle. Three meshing force models in backlash are incorporated into the elastic model independently. Unlike the previous uncoupled stiff impact model, the modified impact model considers the coupling between the pinion and gearwheel. Three scenarios were investigated with different components of two internal excitations, static transmission error (STE) induced periodical backlash and the time-varying meshing stiffness (TVMS). The analytical results show that the free and forced gear motion, nonlinear characteristics and rattle severity are strongly affected by STE rather than TVMS. Two studied hydrodynamic lubricant (HDL) models show different damping effects. The forced gear motion state and rattle sensitivities show a noticeable difference below 40rad/s 2 and turn to a slight variation above 60rad/s 2 . Finally, the HDL model containing only the oil squeeze effect will likely match the experimental results. The experimentally detected STE component of the gearwheel suggests that an acceptable model should be considered in the gear rattle model.

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supporting

confidence: 85%

Section: Introductionmentioning

confidence: 99%

Nonlinear dynamic behaviour and severity of lightly loaded gear rattle under different vibro-impact models and internal excitations

Zhou,

Shi,

Guo

et al. 2023

Nonlinear Dyn

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“…Lubricants have been proven to be widely useable for controlling the friction and wear of contact parts, such as pears, bearings, and scrolls [122,123]. Based on the constant evolution, oil viscosity and additive play the crucial roles in improving the triboperformances of lubricants.…”

Section: Additives For Lubricantsmentioning

confidence: 99%

Recent Progress on Carbon Nanomaterials for Resisting the Wear Damages

Yin

Chen

Zhang

et al. 2022

Journal of Nanomaterials

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In recent years, carbon nanomaterials such as fullerenes, carbon nanotubes, graphene, and nanodiamonds have been regarded as versatile triboproducts such as copper coins for various engineering/commerce-scaled applications. Their large-scale usages as ideal reinforcements for the key tribomaterials are motivated by their huge interfacial areas, unique physical/chemical characteristics, as well as multiple scale load-transferring mechanisms. Numerous investigators have kept on studying the possibilities of using carbon nanomaterials as solid lubricants, lubricating additives, or the superlubricated push hand. This review offers a comprehensive discussion of up-to-date survey in carbon nanomaterials for achieving the low friction and high wear resistant in the forms of coatings, bulk materials, lubricants; or even superlubric state in the tribosystems from nanoscale to macroscale. Finally, important conclusions, foreseeable challenges, and future outlooks for carbon nanomaterials are highlighted as the concluding remarks that are needed to impulse nanotechnology maturation and developments of tribological fields such as copper coin protections.

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“…For design purpose, we should consider this phenomenon. This is so mainly due to the effect of the width of the film oil and the contact friction between teeth, especially in non-stationary regimes [35].…”

Section: Natural Frequencies and Damping Identificationmentioning

confidence: 99%

Operational modal analysis using order-based analysis in a two-stage planetary gear with mechanical power recirculation

Mbarek¹,

Fernández²,

Hammami³

et al. 2022

Comptes Rendus. Mécanique

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Modal analysis techniques are considered as the most used of techniques allowing the characterization of the dynamic behaviour in systems such as planetary gear transmission. During operational conditions, the modal behaviour can be altered. The main purpose of this paper is to estimate the Modal Properties (MP) of two-stage planetary gear during non-stationary regimes using a further version of Operational Modal Analysis (OMA). The natural frequencies and modal damping are determined by Order Tracking (OT) and processed using diagram stability tool. Moreover, the modelling and the treatment of the non-stationary regimes were established. The proposed technique proves that order-based OMA can extract resonances which are related to the interaction between structural modes and the rotational speed harmonics. The experimental measurements are compared to the obtained results via a numerical model. It proves that the natural frequencies and modal damping are significantly dependent on the load.

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Gear rattle dynamics under non-stationary conditions: The lubricant role

Cited by 16 publications

References 31 publications

Nonlinear dynamic behaviour and severity of lightly loaded gear rattle under different vibro-impact models and internal excitations

Nonlinear dynamic behaviour and severity of lightly loaded gear rattle under different vibro-impact models and internal excitations

Recent Progress on Carbon Nanomaterials for Resisting the Wear Damages

Operational modal analysis using order-based analysis in a two-stage planetary gear with mechanical power recirculation

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