Frictional behaviour and friction mechanisms of rolling-sliding contact in mixed EHL

Zhang, Xiaogang; Kanapathipillai, Sangarapillai; Wu, Tonghai; Peng, Zhongxiao

doi:10.1016/j.triboint.2017.04.032

Cited by 16 publications

(3 citation statements)

References 55 publications

(76 reference statements)

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“…Eyre [18] explained industrial significance of different types of wear such as abrasive wear, adhesive wear, erosion, corrosion & fretting of various metals. Zhang, et al [19] carried out mathematical analysis of friction mechanisms in sliding-rolling contacts in presence of elasto-hydrodynamic lubrication considering asperity interaction friction induced due to solid-to-solid ploughing & boundary film friction. This development was found to be a cost-effective method of estimation of friction coefficient in mixed elasto-hydrodynamic lubrication.…”

Section: Introductionmentioning

confidence: 99%

Wet Sliding Wear Behavior of EN31 Rolling Contact Bearings for Screw Compressor Application with Statistical Analysis

Gawande

Raykar

2022

Finnish J. Trib.

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The aim of this work is to estimate the wear rate of EN31 material & obtain the line of best fit using statistical analysis of wear. In industrial screw compressors, EN31 is used as a material of construction for cylindrical roller bearings. The wet sliding phenomenon between the outer surface of the inner race of the rolling contact bearing & the outer surface of the cylindrical roller is simulated using pin-on-disk tribometer. Measurement of wear, friction force & friction coefficient is carried out by rubbing different cylinders of hardened EN31 against hardened EN31 disk of the pin-on-disk tribometer. Total 25 tests each of 10 minutes time duration are performed to estimate wear with variable loads in the range of 20 N to 100 N and speed in the range of 692 RPM to 1246 RPM. From experimental investigation using pin-on-disk tribometer & statistical analysis using MINITAB© commercial software, it is observed that the material wear rate of EN31 increases with the increase in load as well as increase in speed. From pin-on-disk experimentation & statistical analysis it is concluded that the load factor has higher effect on wear than the speed factor. It was observed that the wear increases with the load as well as with the speed.

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Section: Introductionmentioning

confidence: 99%

Wet Sliding Wear Behavior of EN31 Rolling Contact Bearings for Screw Compressor Application with Statistical Analysis

Gawande

Raykar

2022

Finnish J. Trib.

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“…They presented the coefficient of friction or power losses predictions in the gear contact surfaces using elastohydrodynamic lubrication (EHL) models. [21][22][23][24][25][26][27][28][29][30] Like many EHL analyses, this physics-based approach needs an important computational effort.…”

Section: Introductionmentioning

confidence: 99%

Frictional dynamic model predictions of FZG-A10 spur gear pairs considering profile errors

Féki

Hammami

Ksentini

et al. 2020

Proceedings of the Institution of Mechanical Engineers, Part J:

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In this work, a nonlinear dynamic model of an FZG-A10 spur gear was investigated by taking into account for the actual time-varying gear mesh stiffness and the frictional effects between meshing gear teeth to evaluate the influence of the dynamic effects on frictional gear power loss predictions. The equations of motion of the generalized translational-torsional coupled dynamic system derived from Lagrange principle was extended compared to authors’ previous work in order to account for time dependent coefficient of friction and profile errors. The dynamic response of spur gears, computed by an iterative implicit scheme of Newmark, is changed due to the presence of coefficient of friction and profile errors. A dynamic analysis was performed and the influence of frictional effect including tooth shape deviations, in particular, was scrutinized since a time-dependent coefficient of friction is deeply related to the gear surface roughness and all parameters dependent on gears error profiles are introduced in the proposed model. The predicted meshing gear power losses with constant and local friction coefficient were compared. The influence of constant and variable profile errors considered in the local coefficient of friction formulation was also studied and their corresponding root mean square (RMS) power loss was compared to the experimental results. The results using FZG A10 spur gear pairs running under several operating conditions (different loads and speeds) validate the superiority of the proposed model against previous similar models.

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“…Ankur Saxena[ 3 ] proposes a computer simulation based approach to study the effect of time varying friction coefficient on the total effective mesh stiffness for the spur gear pair. Xiaogang Zhang[ 4 ] considered the asperity interaction friction to result from either the boundary film friction or solid-to-solid ploughing and adhesion friction depending on the local contact and deformation conditions. Yuansheng Zhou [ 5 ] proposesed a new method to calculate gear speed ratio, velocity, torque and power based on hypergraph and matrix operation.…”

Section: Introductionmentioning

confidence: 99%

Research on the sliding friction associated spur-face gear meshing efficiency based on the loaded tooth contact analysis

Hao

Liu

Duan³

et al. 2018

PLoS ONE

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In order to solve the problem of Meshing Efficiency of spur-face gear sliding friction, a method for calculating the Meshing Efficiency of Spur-Face gear is proposed based on Elastohydrodynamic lubrication (EHL) theory. Through the Tooth Contact Analysis (TCA) and Loaded Tooth Contact Analysis technique (LTCA) method, the meshing process of the Spur-Face gear was simulated. The calculation model of Sliding friction coefficient was established by using non Newtonian quasi steady thermal Elastohydrodynamic lubrication (TEHL) theory, and the calculation model of Meshing Efficiency of Spur-Face gear was established. The influence of input torque and rotational speed on Meshing Efficiency is analyzed. The results show that Sliding friction coefficient is an important factor affecting the Meshing Efficiency of gears. Sliding friction coefficient is not the same at different positions of the tooth surface. Sliding friction coefficient is affected by input speed and input torque. This method provides a theoretical basis for further optimization calculation of Spur-Face gear.

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Frictional behaviour and friction mechanisms of rolling-sliding contact in mixed EHL

Cited by 16 publications

References 55 publications

Wet Sliding Wear Behavior of EN31 Rolling Contact Bearings for Screw Compressor Application with Statistical Analysis

Wet Sliding Wear Behavior of EN31 Rolling Contact Bearings for Screw Compressor Application with Statistical Analysis

Frictional dynamic model predictions of FZG-A10 spur gear pairs considering profile errors

Research on the sliding friction associated spur-face gear meshing efficiency based on the loaded tooth contact analysis

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