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Vrednotenje reoloških modelov za simulacijo odziva hiperelastičnih materialov
ID Dogša, Jan (Author), ID Nagode, Marko (Mentor) More about this mentor... This link opens in a new window, ID Oman, Simon (Comentor)

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Abstract
V okviru diplomskega dela smo z uporabo metode končnih elementov in programske opreme Abaqus ovrednotili delovanje obstoječih reoloških modelov za simulacijo odziva hiperelastičnih materialov. Te materiale smo podvrgli različnim obremenitvenim stanjem, kot so lezenje, ciklične obremenitve in relaksacija ter spremljali njihov odziv. Naredili smo tudi konvergenčno analizo. Hiperelastične materiale smo definirali z Neo-Hookovim zakonom in Ogdenovim modelom. Ugotovili smo, da Neo-Hookov model omogoča zadovoljiv opis materiala pri manjših deformacijah, medtem ko se pri večjih deformacijah kot primernejši izkaže Ogdenov model, saj boljše popiše obnašanje hiperelastičnih materialov. Eksperimentalne podatke in numerične analize smo med seboj primerjali in ugotavljali ujemanja ter razlike na podlagi pridobljenih rezultatov.

Language:Slovenian
Keywords:gumijasti materiali, hiperelastični materiali, reološki modeli, Neo-Hookov zakon, Ogdenov hiperelastični model, relaksacija, ciklična obremenitev, lezenje, mehanika
Work type:Bachelor thesis/paper
Organization:FS - Faculty of Mechanical Engineering
Year:2026
PID:20.500.12556/RUL-185904 This link opens in a new window
Publication date in RUL:22.08.2026
Views:21
Downloads:8
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Secondary language

Language:English
Title:Evaluation of rheological models for simulating the response of hyperelastic materials
Abstract:
As part of our thesis, we used the finite element method and Abaqus software to evaluate the performance of existing rheological models for simulating the response of hyperelastic materials. We subjected these materials to various loading states, such as creep, cyclic loading and relaxation, and monitored their response. We also performed a convergence analysis. Hyperelastic materials were defined using the Neo-Hook's law and the Ogden model. We found that the Neo-Hook's model provides a satisfactory description of the material at smaller deformations, while the Ogden model is more suitable for larger deformations, as it better describes the behavior of hyperelastic materials. We compared experimental data and numerical analyses and identified similarities and differences based on the results obtained.

Keywords:rubber materials, hyperelastic materials, rheological models, Neo-Hookean law, Ogden hyperelastic model, stress relaxation, cyclic loading, creep, mechanics

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