Methodology of Calculation of Metal-polymer Sliding Bearings for Contact Strength, Durability and Wear

Chernets, M. V.; Chernets, J.; Kindrachuk, M.; Kornienko, Anatolii

doi:10.24874/ti.900.06.20.10

Cited by 12 publications

(16 citation statements)

References 13 publications

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“…Bushing: 1) carbon-filled polyamide PA6+30%CF, ЕCF = 5.20 GPа, μCF = 0.42; 2) glass-filled polyamide PA6+30%GF, ЕGF = 3.90 GPа, μGF = 0.42; volumetric filler content -30%. Wear resistance characteristics of polyamide composites paired with steel, determined by the results of our triboexperimental studies [20,21]: PA6+30%CF: B1CF = 24•10 10 , m1CF = 1.9, τ10= 0.05 МPа; PA6+30%GF: B1GF = 6.67•10 10 , m1GF = 1.9, τ10 = 0.05 МPа.…”

Section: Results Of Numerical Solution Of Wear Contact Problem Discus...mentioning

confidence: 99%

“…This type of wear is practically not allowed even in dry friction bearings and therefore the study of metal bearings by these methods are approximate given the inappropriate real mechanism of wear. Instead, the developed calculation method of research of MP bearings [20,21] is based on the fatigue mechanism of wear, and takes into account the change of conditions of contact interaction owing to wear. The developed method is based on the methodology of research of wear kinetics at sliding, as process of frictional-fatigue destruction of surface layers of tribomechanical system elements [2][3][4]6], and author's calculation methods of plain bearings with metal elements [2,3,6,22,23].…”

Section: Researchmentioning

confidence: 99%

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Investigation of the Effect of Temperature on the Contact Characteristics and Resource of Metal-Polymer Plain Bearings

Chernets¹,

Kornienko²,

Fedorchuk³

et al. 2022

Tribol. Ind.

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Using the developed methodology for calculating hybrid (metal-polymer) plain bearings, a study of the effect of temperature on the contact parameters and their resource was conducted. Metal-polymer bearings with a bushing made of polyamide PA6 reinforced with glass or carbon dispersed fibers were considered. The calculation of the maximum initial contact pressures and their change due to wear of the bushing was performed. The predictive estimate of resource of the investigated bearings at various loadings was carried out. Quantitative and qualitative patterns of changes in the maximum initial contact pressures and bearing resource with increasing temperature were established. Studies show that the decrease in the modulus of elasticity due to increasing temperature leads to a decrease in the maximum pressure and increase the resource of metal-polymer bearings, which is useful. This phenomenon is due to a decrease in the rigidity of the polymer composite.

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Section: Results Of Numerical Solution Of Wear Contact Problem Discus...mentioning

confidence: 99%

Section: Researchmentioning

confidence: 99%

Investigation of the Effect of Temperature on the Contact Characteristics and Resource of Metal-Polymer Plain Bearings

Chernets¹,

Kornienko²,

Fedorchuk³

et al. 2022

Tribol. Ind.

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“…Data for the calculation of MP bearings: N = 500, 1000, 1500 N; F = N / l; D2 = 30 mm; 10  = 0.05 MPa [29,30]; volume filler content -30%. The example of the calculation examines friction both with greasing (boundary) and without greasing (dry).…”

Section: Solution Results Discussionmentioning

confidence: 99%

Influence of Temperature on Contact Pressures and Resource of Metal-Polymer Plain Bearings with the Filled Polyamide PA6 Bushing

Chernets¹,

Pashechko²,

Kornienko³

et al. 2021

Preprint

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It is known that the elastic characteristics of polyamides change with increasing temperature, in particular, the Young's modulus decreases significantly. This fact is practically not taken into account in design calculations of metal-polymer plain (MP) bearings, operating under conditions of the boundary and dry friction. The purpose of the study is the analysis of the effect of temperature on the change of the Young's modulus and, accordingly, the contact strength and triboresource according to the developed method of calculating MP bearings. MP bearings with a bushing made of polyamide PA6 reinforced with glass or carbon dispersed fibers were investi-gated. Quantitative and qualitative regularities of change of the maximum contact pressures and resource of the bearings at temperature increase under conditions of boundary and dry friction are established. The pressures in the bearing bushing made of PA6+30GF will be lower than for the bushing made of PA6+30CF. The resource of the bushing made of PA6+30CF will be significantly greater than for PA6+30GF. For thermoplastic polymers, the increase in temperature will have a useful practical effect due to the decrease in the rigidity of the polymer composites of the bearing bushing.

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“…In accordance with [17,18,25] an integro-differential equation of a certain type is used to determine the magnitude and distribution of the initial contact pressures ( ) p α in the investigated conjugation of cylindrical bodies of close radii. For its approximate solution by the collocation method, the function ( ) p α is taken in the form…”

Section: Calculation Methods Of Contact Pressures and Resourcementioning

confidence: 99%

“…Instead, according to the developed author's methods for the study of plain bearings with metal elements [17][18][19][20][21][22], in [23][24][25] the wear kinetics of cylindrical linear plain bearings with metal elements operating in con-ditions of boundary friction was studied. Regarding the study of this structures type with reciprocating motion of one of the elements, they are known in the literature regarding pneumatic cylinders [26][27][28][29] and hydraulic cylinders [30][31][32][33].…”

Section: Introductionmentioning

confidence: 99%

Prediction of the contact pressures and resource of metal-polymer linear cylindrical plain bearings

Chernets¹,

Kornienko²,

Радько³

et al. 2021

FME Transactions

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Different types of linear bearings (guides) are widely used in practice in various equipment, as in many other areas of human activity. In particular, this applies to cylindrical guides (linear plain bearings) of reciprocating motion. However, despite their considerable distribution, in fact, there are no reasonable methods for calculating the wear and service life of not only metal but also metal-polymer linear bearings. According to the author's method, the influence of load, base diameter and radial clearance on the maximum initial pressures in this bearing was investigated within the plane contact problem of the theory of elasticity. Further, using the computational method according to the author's tribokinetic model of wear during sliding friction, the effect of the composite bushing wear on the change of the initial contact characteristics (contact pressures and contact angle) was evaluated. The forecast calculation of the service life of the bearing depending on the above factors is also carried out. Quantitative and qualitative regularities of dependence of contact pressures and a resource on the accepted factors are established.

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Methodology of Calculation of Metal-polymer Sliding Bearings for Contact Strength, Durability and Wear

Cited by 12 publications

References 13 publications

Investigation of the Effect of Temperature on the Contact Characteristics and Resource of Metal-Polymer Plain Bearings

Investigation of the Effect of Temperature on the Contact Characteristics and Resource of Metal-Polymer Plain Bearings

Influence of Temperature on Contact Pressures and Resource of Metal-Polymer Plain Bearings with the Filled Polyamide PA6 Bushing

Prediction of the contact pressures and resource of metal-polymer linear cylindrical plain bearings

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