20.500.12556/ReVIS-13239 Virtualno prototipiranje v procesu oblikovanja in analize izdelka Virtual Prototyping in the Product Design and Analysis Process Diplomska naloga obravnava uporabo virtualnega prototipiranja pri analizi mehanskih lastnosti 3D natisnjenih polimernih materialov. Predstavljen je pomen virtualnega prototipiranja za skrajšanje časa in stroškov razvoja ter njegova uporaba pri preverjanju mehanskega obnašanja PLA in PLA+CF, izdelanega s FDM postopkom. Eksperimentalni del temelji na nateznih preizkusih standardiziranih preizkušancev, numerični pa na simulacijah v programu ANSYS Workbench z eksplicitno dinamiko z Johnson-Cook modelom. Model je bil obravnavan kot homogeno polno telo brez notranjih struktur, pri čemer je bila stabilnost simulacij preverjena z energijskimi kriteriji. Rezultati kažejo dobro ujemanje pri modulu elastičnosti in raztezku, medtem ko so pri natezni trdnosti opazna za malenkost večja odstopanja. Naloga potrjuje, da virtualno prototipiranje omogoča zanesljivo napoved osnovnih mehanskih lastnosti PLA in ima velik potencial kot dopolnitev klasičnim eksperimentalnim pristopom. This thesis addresses the use of virtual prototyping in the analysis of mechanical properties of 3D-printed polymer materials. It presents the importance of virtual prototyping for reducing development time and costs, as well as its application in evaluating the mechanical behavior of PLA and PLA reinforced with carbon fibers (PLA+CF), manufactured using the FDM process. The experimental part is based on tensile tests of standardized specimens, while the numerical part is based on simulations performed in ANSYS using Explicit Dynamics with the Johnson-Cook material model. The model was treated as a homogeneous solid body without internal structures, and the stability of the simulations was verified using energy criteria. The results show good agreement in terms of elastic modulus and strain, while slightly larger deviations are observed in tensile strength. The thesis confirms that virtual prototyping enables reliable prediction of the basic mechanical properties of PLA and has significant potential as a complement to classical experimental approaches. virtualno prototipiranje cad cae metoda končnih elementov numerična simulacija johnson-cook model natezni preizkus virtual prototyping cad cae finite element method numerical simulation johnson-cook model tensile test true false false Slovenski jezik Angleški jezik Diplomsko delo/naloga 2026-02-27 18:04:01 2026-02-27 18:04:01 2026-04-14 11:43:40 0000-00-00 00:00:00 2026 0 0 0000-00-00 NiDoloceno NiDoloceno NiDoloceno 0000-00-00 0000-00-00 0000-00-00 6071 270463235 DIP_Juric_Ziga_2026.pdf DIP_Juric_Ziga_2026.pdf 1 8C562FE77DFCE5F614B6EF2A3D0A71FB d8e18e67782ddeb85cddddbc103cc864383fa6fde2735e0ffa9cdf9d4984ef18 5069737e-13fe-11f1-8c73-001a4af901a5 https://revis.openscience.si/Dokument.php?lang=slv&id=15726 Univerza v Novem mestu - Fakulteta za strojništvo 0 0 0