20.500.12556/DKUM-10875 OPTIMIRANJE OBLIKE NASTAVNIH ČELJUSTI ROČNIH KLEŠČ SHAPE OPTIMIAL DESIGN OF THE PLIERS' NON-WORKING JAWS Magistrska naloga zajema razvoj nove oblike univerzalnih klešč in klešč stranskih ščipalk. Uporabljena numerična metoda temelji na tehniki projektnih elementov in gradientni optimizaciji. Za projektne elemente smo uporabili Bezierjeva telesa, njihove kontrolne točke pa smo privzeli kot optimizacijske spremenljivke. Za trdnostno analizo z metodo končnih elementov smo projektne elemente diskretizirali z 20-vozliščnimi volumskimi končnimi elementi tipa Serendipity. Optimizacijsko nalogo smo formulirali tako, da smo dosegli čim večje zmanjšanje materialnih stroškov pri izdelavi (volumen klešč). Pri tem smo seveda morali izpolniti zahteve, ki se nanašajo na dovoljene napetosti, deformacije in trajnost klešč v skladu s predpisi, ki urejajo to področje. Razen zmanjšanja stroškov je optimizacija prinesla tudi osvežitev sedanje oblike z novejšo in povečanje funkcionalnost klešč. This work presents the development of a new shape of slip joint waterpump pliers and diagonal cutting nippers. The employed numerical method is based on the design element technique and gradient-based optimization. For the design elements the Bezier bodies have been selected and their control points have been chosen to act as optimization variables. For the structural analysis the 20-node volume finite element of the Serendipity type has been used. The optimization task was formulated so that we achieved maximal reduction of material cost (pliers volume) during production. During optimization we had to fulfill the requirements related to allowed stresses, deformations, and durability in accordance with the regulations for this field. Besides of cost reduction, the result of optimization was a new and fresh shape of the pliers and their increased functionality. konstrukcija optimizacija oblike klešče nastavna čeljust univerzalne klešče klešče stranske ščipalke construction shape optimal design pliers non-working jaw slip joint waterpump pliers diagonal cutting nippers true true false [S. Lenart] Slovenski jezik Angleški jezik Magistrsko delo 2009-06-11 14:43:47 2009-06-30 13:12:35 2022-04-11 16:38:27 2022-04-17 03:17:17 2009 0 Maribor 0 0000-00-00 NiDoloceno NiDoloceno NiDoloceno 0000-00-00 0000-00-00 0000-00-00 624.072:621.7.077 13385750 URN:SI:UM:DK:B2VZR9XH MAG_Lenart_Saso_2009.pdf MAG_Lenart_Saso_2009.pdf 1 8A94C54F2A6213AAFC0CD1C4FE211B4E 829493ac7016220b223117eb8dad53f791384261ba9bf9ac1f4fc63857bd73d8 f3c8de97-7c02-11eb-bb7a-00155d0001ca 20.500.12556/dkum/c77b5a18-af10-4cf3-a34a-8790df6bdb90 https://dk.um.si/Dokument.php?lang=slv&id=9239 Fakulteta za strojništvo 0 0 0