Influence of weld joint and prestressing screw connections on the funkcionality of welded flat flanges smaller diameters

V magistrskem delu so bile predmet testiranj leteče prirobnice, ki jih izdelujejo v podjetju Megras d. o. o. Prirobnice so manjših premerov in jih izdelujejo na dva različna načina in sicer z varjenjem ali z izrezovanjem iz pločevine. Za potrebe eksperimentalnega dela je bilo ustvarjeno preizkuševališče, kjer smo preizkuševališče prirobnic napolnili z oljem. Merili smo tlake, pri katerih popusti spoj prirobnice v odvisnosti od prednapetja vijačne zveze. Za verifikacijo je bila opravljena tudi numerična analiza s programom Abaqus, tako da smo numerično dobljene vrednosti veličin primerjali z vrednostmi dobljenimi pri eksperimentu.In master thesis, we tested welded flat flanges which are produced in company Megras d.o.o. Flanges are of smaller diameters and are produced in two different ways, by welding and by cutting them from sheet metal. For experimental part, we created experimental stand where we filled flanges with oil. We measured the pressures of oil, at which flange loosens, depending on the prestressing screw connection. For verification, we also made numerical analysis with the program Abaqus, so we could compare numerical obtained results with values obtained in the experiment