20.500.12556/RUL-144877 Analysis of the dynamic characteristics of a gear-rotor-bearing system with external excitation Analiza dinamičnih lastnosti sistema zobnik–rotor–ležaj z zunanjim vzbujanjem The dynamic response of the rotor system in a ring die granulator is complex and difficult to solve when it operates under joint external, support and gear mesh forces. To solve this problem, a finite element method and extrusion theory was applied in this study to develop a dynamic coupling model for a hollow overhung rotor with external load excitation. A Newmark-β numerical integration method was used to solve for the dynamic response of the overhung rotor under multiple excitation forces. The results included time-domain response diagrams, frequency-domain response diagrams, phase diagrams, Poincaré section diagrams, and bifurcation diagrams. The model and the method were verified by testing a ring die granulator. On this basis, the dynamic response of the system is predicted according to the influence of different parameters. As the bearing support distance increased, the roller eccentricity decreased, the bearing clearance decreased, the response of the rotor system was significantly optimized, and the system tended to stabilize gradually. Therefore, this paper provides a theoretical basis and experimental verification for the optimization of a pelleting machine transmission structure. rotor dynamics external incentives finite element method bearing gears dinamika rotorja zunanje vzbujanje metoda končnih elementov ležaji zobniki sila pri ekstrudiranju true false true Angleški jezik Slovenski jezik Članek v reviji 2023-03-20 09:06:07 2023-03-20 09:06:13 2023-03-21 03:30:37 0000-00-00 00:00:00 2023 0 0 Str. 17-31 no. 1/2 Vol. 69 Jan./Feb. 2023 0000-00-00 Zaloznikova Objavljeno NiDoloceno 0000-00-00 0000-00-00 0000-00-00 621.8 0039-2480 10.5545/sv-jme.2022.427 145704451 Na_..._-_Analysis_of_the_dynamic_characteristics_of_a_gear-rotor-bearing_system_with_external_excitation.pdf Na_..._-_Analysis_of_the_dynamic_characteristics_of_a_gear-rotor-bearing_system_with_external_excitation.pdf 1 69CEA1EBA2C2B92AF62FD6DEF1DAD859 8bfd520047b7720f2382cc1ac02051302fefb621bc7ecae3ee257c3ff5196eb2 6fd2c9f8-c6f6-11ed-a314-00155dcfd717 https://repozitorij.uni-lj.si/Dokument.php?lang=slv&id=167427 https://www.sv-jme.eu/sl/article/analysis-of-the-dynamic-characteristic-of-a-gear-rotor-bearing-system-with-external-excitation/ 1 04a2f86f-c6f6-11ed-a314-00155dcfd717 https://repozitorij.uni-lj.si/Dokument.php?lang=slv&id=167425 Fakulteta za strojništvo Strojniški vestnik 0 0 0