20.500.12556/RUL-181141 Numerično modeliranje vijačnih zvez trdnostnega razreda 4.6 Numerical modeling of screw connections of strength class 4.6 Vijačne zveze so najpogostejša razstavljiva zveza strojnih elementov. Pravilno načrtovanje le-teh zagotavlja varnost, zanesljivost in trdnost sestavov. Konstrukcijo optimalno dimenzioniramo na način, da bo dovolj stabilna za obremenitve, ki jih bo prenašala, pri čemer pa je ne smemo predimenzionirati. Preden konstrukcijo sestavimo, je zato dobro vedeti, ali so naši preračuni zadovoljivi. To lahko preverimo s simulacijami. Tu pa pridemo do naslednje težave, saj je simuliranje oz. matematično računanje z natančnimi 3D modeli časovno zelo neučinkovito. Da bi se temu izognili, poskusimo vijake modelirati poenostavljeno s pomočjo linijskega modeliranja. Cilj je doseči, da se linijsko modeliran vijak obnaša podobno kot 3D modeliran vijak, saj lahko z zadovoljivimi rezultati precej pospešimo proces dimenzioniranja konstrukcij. V tej nalogi je predstavljen celoten postopek, kako preverimo, ali lahko na ta način modeliramo. Na isti način lahko preverimo, ali lahko z vijakom iz različnega materiala modeliramo poenostavljeno. Ugotovili smo, da se vijak M6, trdnostnega razreda 4.6 po standardu DIN 975, lahko modelira poenostavljeno ali linijsko. Screw connections are the most common detachable connection of mechanical elements. Proper planning of these ensures safety, reliability, and strength of assemblies. Ideally, our construction should be dimensioned in a way to make it stable enough for the loads it will carry, whereby we should be careful not to over-dimension the construction. For this reason, it is best to know whether our calculations are satisfactory before assembling the construction. This can be done with simulations. However, this leads to the next issue, as simulations, e.g. mathematical calculations, with precise 3D models are very time inefficient. To overcome this problem, we must model screws in a simplified way, by means of line modeling. The goal is to achieve that a line-modeled screw behaves similarly to a 3D modeled screw. With satisfactory results, we can significantly speed up the process of dimensioning all constructions. Herein presented is the entire process of how to check if this can be modeled as suggested. The same method can be applied to check whether a different screw, made of different material, can be modeled in a simplified way. We found out that the M6 screw, strength class 4.6 according to the DIN 975 standard, can be modeled in a simplified or linear way. Vijačne zveze numerične simulacije materialne lastnosti napetostno-deformacijska krivulja geometrijsko modeliranje eksperimentalni rezultati Screw joints numerical simulations material properties stress strain curve geometric modeling experimental results true false false [S. Ravmanoski] Slovenski jezik Angleški jezik Diplomsko delo/naloga 2026-03-26 08:30:25 2026-03-26 08:30:38 2026-03-30 04:11:08 0000-00-00 00:00:00 2026 0 Ljubljana 0 XX, 55 str. 0000-00-00 NiDoloceno NiDoloceno NiDoloceno 0000-00-00 0000-00-00 0000-00-00 621.882.1:004.942(043.2) 283361 273215491 46697.pdf 46697.pdf 1 C4B512092492FF07E740F574DE0D6DF9 68bd7004b44706d66a44f81e57908662c69f5709c4ab1944cdc4e44761196356 8e45aafa-28e5-11f1-b0ab-0050569b8976 https://repozitorij.uni-lj.si/Dokument.php?lang=slv&id=231337 Fakulteta za strojništvo 0 0 0