20.500.12556/RUL-129534 Vpliv ortotropnih mehanskih lastnosti 3D tiskanih struktur na lastno dinamiko sistema Influence of orthotropic mechanical properties of 3D printed structures on system's free vibration Uporaba 3D tiskanja postaja priljubljena zaradi hitrega prototipiranja in sposobnosti tiskanja kompleksnih struktur. To omogoča sposobnost tiskanja struktur z različnimi oblikami odlaganja plasti materiala pri različnih gostotah polnila, ki vplivajo na ortotropne mehanske lastnosti in posledično na lastno dinamiko tiskanih struktur, katerih analiza je problem zaključne naloge. Izvedena je bila eksperimentalna analiza izbranih tiskanih struktur, na podlagi katere se je določilo dejanske lastne frekvence preizkušancev. Nato se je preko posodabljanja numeričnega modela določil modul elastičnosti tiskanega materiala. Z znanim modulom elastičnosti materiala je bila opravljena statična numerična analiza in posledično karakterizacija ortotropnih lastnosti tiskanih struktur. S popisanimi lastnostmi je bila izvedena numerična modalna analiza modela preizkušanca, ter na koncu primerjava numeričnih rezultatov modalne analize z rezultati eksperimenta. The use of 3D printing is becoming popular due to rapid prototyping and the ability to print complex structures. This enables the ability to print structures with different infill patterns at different infill densities, which affect orthotropic mechanical properties and consequently the intrinsic dynamics of printed structures, the analysis of which is the problem of the final thesis. An experimental analysis of selected printed structures was performed, on the basis of which the actual natural frequencies of the subjects were determined. The modulus of elasticity of the printed material was then determined by updating the numerical model. With the known modulus of elasticity of the material, a static numerical analysis was conducted and consequently the characterization of the orthotropic properties of printed structures was performed. A numerical modal analysis of the models subject was performed with the described properties, and finally a comparison of the numerical results of the modal analysis with the experimental results. 3D tiskanje trdnost modalna analiza lastne frekvence numerična analiza eksperimentalna analiza 3D printing mechanics of materials modal analysis natural frequencies numerical analysis experimental analysis true false false [S. Štih] Slovenski jezik Angleški jezik Zaključna naloga 2021-09-04 08:31:03 2021-09-04 08:31:06 2023-10-27 13:32:25 0000-00-00 00:00:00 2021 0 Ljubljana 0 XIII, 41 str. 0000-00-00 NiDoloceno NiDoloceno NiDoloceno 0000-00-00 0000-00-00 0000-00-00 1970-01-01 004.925.84:539.3:519.6(043.2) 232792 81431811 8895.pdf 8895.pdf 1 193AEC92A90D94D00062A0FA688B80CB d61e5a7273816cc1fdfce4f20b6ba20e2e88ee8a5b2841cb810b3570fbdfbf15 7216d758-0d49-11ec-a523-00155dcfd717 https://repozitorij.uni-lj.si/Dokument.php?lang=slv&id=146536 8896.pdf 8896.pdf 1 2C8B28688DA71D70A98E7D88996D2B6D 9048d207f0b13bff9599f7a2d7dd62a82719c32fd842ca6184f3fb1081a6f0e5 72178e54-0d49-11ec-a523-00155dcfd717 https://repozitorij.uni-lj.si/Dokument.php?lang=slv&id=146537 8897.pdf 8897.pdf 1 FEEAE9FEE2A0D739653AA47E4536B79D 1610cd8de762c1910ad1205f1225debcc2dbb51bef26192dbee5dfda72853db9 7217ba1b-0d49-11ec-a523-00155dcfd717 https://repozitorij.uni-lj.si/Dokument.php?lang=slv&id=146538 Fakulteta za strojništvo 0 0 0