20.500.12556/RUL-137011 Razvoj enostavne vlečne naprave za košnjo vegetacije okoli manjših dreves Development of a simple trailer device for cutting vegetation around small trees Cilj magistrskega dela je razviti sistem, ki omogoča košnjo vegetacije okoli drevesnih debel. Metodologija, ki smo ji sledili, je pregledati do sedaj vložene patente ter izdelke na tem področju. S pomočjo inženirskega znanja in modelov za razvoj izdelkov smo nato izbrali in zasnovali koncept, ki je tema obravnave. Le-tega smo razdelili na standardne strojne elemente, ki smo jih vrednotili in naredili statični ter dinamični trdnostni preračun. Problem, s katerim smo se srečevali tekom preračuna, je postavitev obremenitvenih pogojev iz z njimi povezane obremenitvene slučaje. Za zagotavljanje učinkovite košnje je potrebna identifikacija ključnih parametrov, ki so vključeni v proces. Slednjega smo natančneje ponazorili v drugem delu ter s pomočjo optimizacijske metode iskali rešitev za čim večjo učinkovitost. Rezultati in preračuni kažejo, da je na tem področju še dovolj prostora za izboljšave in nove izdelke, saj so zahteve iz dneva v dan večje. Z ekonomičnim razpolaganjem sredstev in izbiro pravega pristopa to lahko dosežemo. The objective of the master's thesis is to develop a system that allows cutting vegetation around tree trunks. The methodology, which was followed, is to review the patents filed so far and the products in this field. With the help of engineering knowledge and product development models, the design concepts were selected and discussed. The first subassembly was divided into standard machine elements, which were evaluated and a static and dynamic strength calculation was performed. The main problem is estimating the structural stress conditions from the associated load cases. To ensure efficient cutting, it is necessary to identify the key parameters involved in the process. We illustrated the process in more detail in the second part and with the help of the optimization method with which the maximum efficiency was sought. The results and calculations show that there is still enough room in this area for improvements and new products, as the requirements are increasing day by day. We can achieve this by economically disposing of resources and choosing the right approach. konstruiranje in razvoj trdnostna analiza utrujanje konstrukcij Taguchi metoda načrtovanje eksperimenta rainflow metoda design and development strenght analysis fatigue of structures Taguchi method design of experiment rainflow method true false false [J. Rožman] Slovenski jezik Angleški jezik Magistrsko delo/naloga 2022-05-28 08:30:24 2022-05-28 08:30:31 2023-10-18 12:27:47 0000-00-00 00:00:00 2022 0 Ljubljana 0 XXIV, 80 str. 0000-00-00 NiDoloceno NiDoloceno NiDoloceno 0000-00-00 0000-00-00 0000-00-00 510.86(043.2) 238173 109821955 14190.pdf 14190.pdf 1 594CA13815E9B50A3A60CF6B45E8D21B 01cb792019ad3bae6257739f752f44e4cdc17c51cfb405262b37445d08d3660a 89126642-de4f-11ec-8aca-00155dcfd717 https://repozitorij.uni-lj.si/Dokument.php?lang=slv&id=156855 Fakulteta za strojništvo 0 0 0