Semi-analytical calculation model for friction of polymers on the example of POM|PE-UHMW and steel|PE-UHMW

作     者：André BERGMANN Jens SUMPF Niels DALLINGER Martin MONEKE Markus GOLDER 

作者机构：Professorship of Conveying Engineering and Materials HandlingChemnitz University of TechnologySachsen 09126Germany Institute of Plastics EngineeringDarmstadt University of Applied SciencesDarmstadt 64295Germany 

出 版 物：《Friction》 (摩擦（英文版）)

年 卷 期：2024年第12卷第10期

页      面：2355-2369页

核心收录：

学科分类：081702[工学-化学工艺] 07[理学] 08[工学] 0817[工学-化学工程与技术] 070305[理学-高分子化学与物理] 0703[理学-化学] 

基　　金：funded by the Federal Ministry of Economic Affairs and Energy(BMWi)through the“Otto von Guericke”German Federation of Industrial Research Associations(AiF)on the basis of a resolution of the German Bundestag as part of the programme to promote joint industrial research(IGF No.20967 BG) 

主　　题：tribology friction polymers model contact polyoxymethylene(POM) polyethylene with ultra-high molecular weight(PE-UHMW) 

摘      要：In this paper,a semi-analytical calculation model for the coefficient of friction(COF)of single spherical protrusions is *** allows the prediction of the deformative friction part(μ_(def))and adhesive friction part(μ_(def))of the friction pairings steel|polyethylene with ultra-high molecular weight(PE-UHMW)and polyoxymethylene(POM)|*** experimental studies included unlubricated friction tests,which served to determine the total COF(μ_(def)),as well as tests being lubricated with silicone oil,from whichμ_(def)is *** on the verification tests,it could be shown that both states of lubrication result in the same deformation and that the relationship between the rear angle(w)andμ_(def)postulated in the calculation model is ***,friction tests with segmented spheres were carried out,which allow a specific variation of *** can be concluded that for both pairings theμ_(def)is generally of minor significance(approx.1/3μ_(tot))and the influence of theμ_(adh)predominates(approx.2/3μ_(tot))the friction *** themtot decreases with increasing contact pressure especially in the low pressure range and depends on the form of motion(continuous and discontinuous).