Preprint Article Version 1 Preserved in Portico This version is not peer-reviewed

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

Version 1 : Received: 20 July 2021 / Approved: 21 July 2021 / Online: 21 July 2021 (11:24:45 CEST)

How to cite: Chernets, M.; Pashechko, M.; Kornienko, A.; Buketov, A. Influence of Temperature on Contact Pressures and Resource of Metal-Polymer Plain Bearings with the Filled Polyamide PA6 Bushing. Preprints 2021, 2021070488 (doi: 10.20944/preprints202107.0488.v1). Chernets, M.; Pashechko, M.; Kornienko, A.; Buketov, A. Influence of Temperature on Contact Pressures and Resource of Metal-Polymer Plain Bearings with the Filled Polyamide PA6 Bushing. Preprints 2021, 2021070488 (doi: 10.20944/preprints202107.0488.v1).

Abstract

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.

Subject Areas

metal-polymer plain bearings; PA6 based polyamide composites; dispersed glass and carbon fibers; temperature; Young's modulus; maximum contact pressures and resource; boundary and dry friction

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