The influence of contact stress distribution and specific film thickness on the wear of spur gears during pitting tests

Muraro, Marco Antonio; Koda, Fábio; Reisdorfer Jr., Urbano; Silva, Carlos Henrique da

doi:10.1590/s1678-58782012000200005

Cited by 36 publications

(38 citation statements)

References 9 publications

(6 reference statements)

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“…Similarly, the film thickness in case of 96 tooth-sum is more as compared to that of 100 tooth-sum. From this it can be concluded that 96 tooth-sum have greater resistance to the damage to fatigue stresses and the process of damage is delayed as compared to 100 tooth-sum [18]. Also, it is observed that the specific film thickness ratio is more in case of 96 tooth-sum as compared to 100 tooth-sum.…”

Section: Power Loss Film Thickness and Specific Film Thickness Usingmentioning

confidence: 71%

Power loss analysis in altered tooth-sum spur gearing

2018

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Abstract. The main cause of power loss or dissipation of heat in case of meshed gears is due to friction existing between gear tooth mesh and is a major concern in low rotational speed gears, whereas in case of high operating speed the power loss taking place due to compression of air-lubricant mixture (churning losses) and windage losses due to aerodynamic trial of air lubricant mixture which controls the total efficiency needs to be considered. Therefore, in order to improve mechanical efficiency it is necessary for gear designer during gear tooth optimization to consider these energy losses. In this research paper the power loss analysis for a tooth-sum of 100 altered by ±4% operating between a specified center distance is considered. The results show that negative altered tooth-sum gearing performs better as compared to standard and positive altered tooth-sum gearing.

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Section: Power Loss Film Thickness and Specific Film Thickness Usingmentioning

confidence: 71%

Power loss analysis in altered tooth-sum spur gearing

2018

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“…However, sufficient amount of a lubricant creates prerequisites for shearing stresses coming out to the surface, in this case, the cracks initiation occurs in the cavities of rough surfaces. The gears with shaving showed better wear resistance than milling ones, since they delay the initiation of sub-surface cracks (Muraro et al, 2012). The wear mechanisms and the damage morphology, identified by microscopic observation of the tooth surface, show the importance of surface finish, the level of contact stresses and the lubricant film thickness to wear on gear teeth.…”

Section: The Influence Of Lubricant On the Wear Resistance Of Tooth Gmentioning

confidence: 97%

The Effect of the Slippage Degree at Rolling with Slipping on the Wear Resistance of Contact Surfaces

Al-Quraan

Mikosyanchik

Мнацаканов

2016

MER

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The regularities of the wear of the steel 1045 during cutting off the feed of a lubricant under the non-stationary friction conditions were established. The influence of the properties of the secondary structures, formed on the contact surfaces under conditions of rolling with a different degree of slippage, on the wear of advancing and lagging surfaces was determined. The influence of specific friction work, the degree of hardening -weakening of surface layers of metal and the intensity of saturation by active elements of near-surface layers of metal on the wear resistance of friction pairs is examined. The change is established in localization of the depth of spreading the stressed and deformed state of material of the contact surfaces with an increase in the slip rate from 0.315 m/s to 1.14 m/s at rolling with the slippage.

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“…Other applications of contact are as resistive components against wear like clutches and cylinder linings [2][3][4]. In both groups, the main objective is finding the effective parameters on stress distribution and singularities arising at the edges of the film or the stiffener solids.…”

Section: Introductionmentioning

confidence: 99%

Performance Analysis of Functionally Graded Coatings in Contact with Cylindrical Rollers

Jahedi

Adibnazari

Farrahi

2014

Advances in Mechanical Engineering

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This work presents finite element analysis (FEA) and results for rolling contact of a cylindrical roller on an elastic substrate coated by functionally graded material (FGM). The rolling process and the graded coating material property and layers arrangement are modeled using finite element codes which lead to a new methodology. This novel methodology provides a trend in determining surface contact stresses, deformations, contact zones, and energy dissipation through the contact area. Effects of stiffness ratio, friction, and exponentially variation of material property on the contact stresses and deformations are studied. Some of the results are verified with analytical solutions. The study results may be beneficial in graded coated cylindrical components analysis against rolling contact failure and wear.

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The influence of contact stress distribution and specific film thickness on the wear of spur gears during pitting tests

Cited by 36 publications

References 9 publications

Power loss analysis in altered tooth-sum spur gearing

Power loss analysis in altered tooth-sum spur gearing

The Effect of the Slippage Degree at Rolling with Slipping on the Wear Resistance of Contact Surfaces

Performance Analysis of Functionally Graded Coatings in Contact with Cylindrical Rollers

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