20.500.12556/DKUM-44607 Analiza konstrukcije sedeža Sitty z uporabo računalniških simulacij in eksperimentov Analysis of the construction of the seat sitty using computational simulations and experiments Predmet magistrskega dela je konstrukcija urbanega preklopnega sedeža Sitty, ki je oblikovno dovršen izdelek, pri katerem uporabnik s pomikom postavi sedalno površino v položaj za sedenje, po uporabi pa se le-ta samodejno vrne v pokončen položaj. Glavni cilj obravnavane tematike je analiza obstoječe konstrukcije sedeža Sitty z računalniškimi simulacijami in eksperimenti. Pri tem so uporabljene numerične simulacije po metodi končnih elementov, s katerimi je obravnavan nosilni del konstrukcije preklopnega sedeža. Statično analizo smo vrednotili na podlagi primerjalnih napetosti po von Misesu in pomikov, dinamične vplive pa smo upoštevali s hot spot stress analizo, ki služi določitvi življenjske dobe. Eksperimenti so izvedeni s pomočjo namensko skonstruirane preizkusne naprave. Glede na pridobljene rezultate je izpostavljeno najbolj kritično mesto konstrukcije. Merilo za primerjavo rezultatov je število teoretično pridobljenih ciklov z uporabo hot spot stress analize in dejansko število opravljenih ciklov s pomočjo eksperimentov. Rezultati eksperimentov so z dobrim ujemanjem z analitično rešitvijo potrdili pravilnost izračunov. The subject of the master thesis is the construction of the urban switching seat Sitty, which is a superiorly designed product and is used by moving the seat surface in the sitting position. After use it is automatically returned to its original position. The main goal of this work was the analysis of the existing construction of the seat Sitty in terms of computational simulations and experiments. For reaching this goal numerical simulations are used by means of finite element method, which is used to analyse only the supporting construction of the product. The static analysis is evaluated on the basis of von Mises equivalent stress and displacements, meanwhile the dynamic analysis is done by the hot spot stress method, which helps us to determine lifetime. Experiments were made by the purpose-constructed testing device. With the obtained results the most critical point of the construction is exposed. The criteria of comparison are the results of the theoretical number of cycles obtained using the hot spot stress analysis and the actual number of cycles obtained by experiments. Experimental results are a good match with the analytical solution. preklopni sedež računalniške simulacije MKE analiza hot spot stress analiza eksperimenti meritve switching seat computational simulations FEM analysis hot spot stress analysis experiments measurements true true false [T. Kastelic] Slovenski jezik Angleški jezik Magistrsko delo/naloga 2014-06-10 08:48:12 2014-06-27 14:15:28 2022-05-13 03:06:57 2021-05-01 03:29:57 2014 0 Maribor 0 0000-00-00 NiDoloceno NiDoloceno NiDoloceno 0000-00-00 0000-00-00 0000-00-00 629.4.046.3:004.8(043.2) 18048790 URN:SI:UM:DK:H9VWE2WR MAG_Kastelic_Tomaz_2014.pdf MAG_Kastelic_Tomaz_2014.pdf 1 A33867B391B9BCD8059D83551F0240FA f17996972c3bfbcfefd4e3d560116737606e2d11dd9c17c1c37b0531143bd839 e54e1bac-7c0a-11eb-bb7a-00155d0001ca https://dk.um.si/Dokument.php?lang=slv&id=64111 Fakulteta za strojništvo 0 0 0