20.500.12556/RUL-164428 Generacija toplote v zobu polimernega zobnika med cikličnim obremenjevanjem Heat generation in a polymer gear tooth during cyclic loading Zaključno delo je osredotočeno na termomehansko obravnavo segrevanja zoba polimernega zobnika, zaradi cikličnega obremenjevanja. Zajete so teoretične osnove in dosedanje raziskave segrevanja in obremenjevanja polimernih zobnikov. Obravnavan je zob zobnika, katerega širina je dvakrat večja od dolžine, zato se v njem pojavijo nezanemarljive strižne napetosti. Posebej smo se osredotočili na vpliv, ki ga imajo strižne napetosti na segrevanje, zato smo za mehanski del uporabili Timošenkovo teorijo nosilcev. V model smo vključili vpliv napetosti, deformacij, trenja, nehomogenosti prereza zaradi evolventne oblike in premikanje sile po dolžini zobnika. Segrevanje in ohlajanje smo analitično izračunali s toplotno enačbo in rezultate primerjali z Euler-Bernoullijevo teorijo. Ti so pokazali, da pri cikličnem obremenjevanju strig nima občutnega vpliva na segrevanje, zato pa ima pri obravnavanem problemu velik vpliv na napetosti in deformacije. Prikazali smo, kako se toplota generira v zobu zaradi frekvence, sile in trenja. The final work deals with thermomechanical heating of a polymer gear tooth due to cyclic loading. The first part of the work focuses on the theoretical basis and current research on heating and loading of polymer gears. We considered a gear tooth whose width is twice it’s length, whereby shear stresses are no longer negligible. We focused on the influence of shear stresses on heating, so we used Timoshenko’s theory of beams for the mechanical equations. The model includes the influence of stress, deformation, friction, inhomogeneity of the cross-section due to the involute shape and the movement of force along the length of the gear tooth. Heating and cooling were calculated analytically using the thermal equation. The results were compared with the Euler-Bernoulli theory. They showed that, during cyclic loading, shear has no significant effect on heating. However, it has a great influence on stresses and deformations in the problem under consideration. We then showed how heat is generated in a gear tooth due to frequency, force and friction. polimerni zobniki Timošenkov nosilec ciklično obremenjevanje termomehanika premikajoča sila polymer gears Timoshenko beam cyclic loading thermomechanics moving force true false false Slovenski jezik Angleški jezik Magistrsko delo/naloga 2024-10-25 08:30:24 2024-10-25 08:30:37 2024-12-19 08:39:39 0000-00-00 00:00:00 2024 0 0 XVIII, 59 str. 2024 0000-00-00 NiDoloceno NiDoloceno NiDoloceno 0000-00-00 0000-00-00 0000-00-00 539.37:621.83(043.2) 267006 219793411 38308.pdf 38308.pdf 1 6D8AF378E65AEA32D23AAF436BD44587 bac658e7040e1610a351702ec88ff6d7250449e858814af9adeb2f52b947dacd 5880a8f2-929a-11ef-b232-0050569b8976 https://repozitorij.uni-lj.si/Dokument.php?lang=slv&id=194797 Fakulteta za strojništvo 0 0 0