20.500.12556/DKUM-98060 Numerična analiza obremenjevanja kompozitov z gumeno matrico magistrsko delo Numerical Stress Analysis of Rubber Matrix Composites Magistrsko delo obravnava numerično analizo mehanskega odziva kompozitnega materiala z gumeno matrico in najlonskimi ojačitvenimi vlakni pri kvazistatičnih nateznih obremenitvah. Izhodišče raziskave so eksperimentalni natezni preizkusi, izvedeni na posameznih fazah kompozita ter v dveh konfiguracijah kompozita z orientiranostjo vlaken pod različnimi koti in dveh debelinah preizkušanca. Na podlagi eksperimentalnih podatkov so bili določeni materialni parametri posameznih faz. Gumena matrica je bila opisana s hiperelastičnim materialnim modelom Blatz-Ko, ojačitvena najlonska vlakna pa z linearno elastičnim. Numerični model je bil razvit v programskem okolju ANSYS Mechanical APDL z uporabo volumskih elementov SOLID185 za matrico ter diskretnih ojačitvenih elementov REINF264 za vlakna vgrajena v matrico. Geometrija in računska mreža sta bili pripravljeni v programskem jeziku Python z uporabo knjižnice PyMAPDL. Primerjava simuliranih rezultatov z eksperimentalnimi podatki je pokazala, da se model z napako pod 20 % dobro ujema z eksperimentom pri deformaciji okoli 10 % za obe konfiguraciji in orientaciji vlaken. Ujemanje je boljše pri orientaciji 0°, kjer vlakna prevzamejo pretežni del obremenitve in je odziv pretežno linearen. Pri orientaciji 45° pride pri večjih deformacijah do izraza nelinearni prispevek gumene matrice, ki ga Blatz-Ko model opisuje manj natančno. Razvit numerični model predstavlja osnovo za nadaljnjo optimizacijo gumenih kompozitnih struktur ter odpira možnosti za zmanjšanje obsega eksperimentalnih testiranj pri razvoju novih aplikacij. This master's thesis addresses the numerical analysis of the mechanical response of a composite material consisting of a rubber matrix reinforced with nylon fibers under quasi-static tensile loading. The research is based on experimental tensile tests performed on the individual composite phases, as well as on two composite configurations with different fiber orientations and two specimen thicknesses. Material parameters for each phase were determined from experimental data. The rubber matrix was described using the Blatz-Ko hyperelastic material model, while the nylon reinforcement fibers were modeled using a linear elastic model. The numerical model was developed in the ANSYS Mechanical APDL environment using SOLID185 solid elements for the matrix and discrete REINF264 reinforcement elements for the fibers embedded in the matrix. The geometry and computational mesh were prepared in the Python programming language using the PyMAPDL library. Comparison of the simulated results with experimental data showed that the model correlate well with the experiment within an error of 20 % at a deformation of approximately 10 % for both configurations and fiber orientations. Correlation is better for the 0° orientation, where the fibers carry the majority of the load and the response is predominantly linear. At 45° orientation, the nonlinear contribution of the rubber matrix becomes significant at larger deformations, which the Blatz-Ko model captures less accurately. The developed numerical model provides a foundation for further optimization of rubber composite structures and opens possibilities for reducing the extent of experimental testing in the development of new applications. gumeni kompozit najlonska vlakna hiperelastičnost Blatz-Ko model metoda končnih elementov ANSYS MAPDL numerična simulacija rubber composite nylon fibers hyperelasticity Blatz-Ko model finite element method ANSYS MAPDL numerical simulation true true false [E. Buh] Slovenski jezik Angleški jezik Magistrsko delo/naloga 2026-05-12 08:47:27 2026-05-27 12:37:52 2026-06-06 03:06:54 0000-00-00 00:00:00 2026 0 Maribor 0 Maribor 1 spletni vir (1 datoteka PDF (XIV, 54 f.)) 0000-00-00 NiDoloceno NiDoloceno NiDoloceno 0000-00-00 0000-00-00 0000-00-00 519.6:620.172(043.2) 280622339 MAG_Buh_Emil_2026.pdf MAG_Buh_Emil_2026.pdf 1 4645392742470491FE05481A9A145B53 406e0d049fb6f073d532dc2177fab0b9848534a91f94fc92a47c6800d45556f9 2c74543a-5940-11f1-b241-00155d580e34 https://dk.um.si/Dokument.php?lang=slv&id=206435 Fakulteta za strojništvo 0 0 0