20.500.12556/RUL-137770 Influence of temperature- and strain rate-dependent viscoplastic properties of polyoxymethylene on the thermo-mechanical response of a steel-polyoxymethylene spur gear pair The nonlinear material properties of thermoplastics like polyoxymethylene (POM) can influence the thermo-mechanical response of polymer gears to applied running loads. In the presented study, the non-elastic strain rate- and temperature-dependent mechanical characteristics of POM are examined, along with their influence on the mechanical response of the polymer gear at the tooth root and contact interface, and the resulting heat generation driving the commonly exhibited temperature rise during gear meshing/running. A detailed experimental study of these properties was conducted, employing standardized and partly customized tensile and bending tests. Using a suitable viscoplastic constitutive material model, calibrated based on the obtained experimental results, a numerical structural-contact analysis of the gear meshing process was performed, which could subsequently be used for a more detailed evaluation of the generated frictional heat and resulting temperature rise during gear running. While a significant influence of the viscoplastic material properties on the mechanical contact response and the flash temperature rise on the POM gear was identified, no major impact on the long term nominal temperature rise was recognized. polymer gears viscoplasticity experimental characterization acetal gears thermo-mechanical analysis polimerni zobniki viskoplastičnost eksperimentalna karakterizacija POM zobniki termo-mehanska analiza true false true Angleški jezik Slovenski jezik Članek v reviji 2022-06-30 10:18:41 2022-06-30 10:18:43 2022-09-15 04:15:47 0000-00-00 00:00:00 2020 0 0 14 str. Vol. 25, art. 101078 Dec. 2020 0000-00-00 Zaloznikova Objavljeno NiDoloceno 0000-00-00 0000-00-00 0000-00-00 519.8+621.8+536(045) 2352-4928 10.1016/j.mtcomm.2020.101078 29996547 1-s2.0-S2352492820301495-main.pdf 1-s2.0-S2352492820301495-main.pdf 1 11805DE066AE994F911E800DCE300D62 52b14cee706dd5b774906fec3ee62ab343a68d7695139ebf1156f55d7dc5b130 5a19395b-f84d-11ec-8aca-00155dcfd717 https://repozitorij.uni-lj.si/Dokument.php?lang=slv&id=157837 https://www.sciencedirect.com/science/article/pii/S2352492820301495 1 0c782ab9-f84d-11ec-8aca-00155dcfd717 https://repozitorij.uni-lj.si/Dokument.php?lang=slv&id=157836 Fakulteta za strojništvo 0 0 0