20.500.12556/RUL-173150 Eksperimentalna analiza vibracijsko dušilnih elementov z delci: vpliv velikosti delcev in njihovih mešanic na dušenje in togost Experimental analysis of particle-based vibration damping elements: the influence of particle size and their mixtures on damping and stiffness Dušenje strukturnih vibracij je izrednega pomena v številnih aplikacijah, saj s tem omogočamo mirnejše in bolj zdravo življenjsko okolje. V primeru pasivne antivibracijske izolacije se uporabljajo materiali z velikim notranjim dušenjem, kjer pa sta navadno togost in dušenje obratno sorazmerna. Z uporabo sistemov, ki za dušenje uporabljajo delce, zaprte v omejen prostor, se dušenje lahko bistveno izboljša, saj se mehanizmu notranjega dušenja v materialu pridružijo še drugi mehanizmi dušenja, ki so v tem primeru povezani z mrežo sil v takšnem sistemu. Takšni elementi poleg dušilnih lastnosti zagotavljajo tudi zmožnost prenašanja strukturnih obremenitev konstrukcij in so ves čas obremenjeni. V sklopu magistrske naloge smo opravili eksperimentalno analizo vpliva velikosti delcev, mešanic velikosti delcev, polnjenja, sile in ohišja na dušenje in togost vibracijsko dušilnih elementov z delci za namen dušenja vibracij v železniški infrastrukturi. Pripravili smo eksperimentalni plan, preizkušance in določili vplive na dušenje in togost. Na podlagi eksperimentov smo prikazali, da lahko s prilagajanjem tlaka v preizkušancih, izbiro velikosti delcev, pripravo mešanic velikosti in spreminjanjem trdote ohišij drastično spreminjamo lastnosti dušenja in togosti vzorcev. Damping of structural vibrations is of great importance in numerous applications, as it enables a calmer and healthier living environment. In the case of passive anti-vibration isolation, materials with high internal damping are used, where stiffness and damping are usually inversely proportional. By using systems that employ particles enclosed in a confined space for damping, the overall damping can be significantly improved, since, in addition to the mechanism of internal damping within the material, other damping mechanisms related to the force network in such a system are also present. Such elements, in addition to providing damping properties, also ensure the ability to transfer structural loads of constructions and are continuously loaded. As part of the master’s thesis, we carried out an experimental analysis of the influence of particle size, particle size mixtures, filling, force, and housing on the damping and stiffness of particle-based vibration damping elements for the purpose of vibration reduction in railway infrastructure. We prepared the experimental plan, test specimens, and determined the effects on damping and stiffness. Based on the experiments, we demonstrated that by adjusting the pressure in the specimens, selecting particle sizes, preparing size mixtures, and changing the hardness of the housings, we can drastically alter the damping and stiffness properties of the samples. dušenje z delci dušilni elementi z delci vibroizolacija izolacija pri plavajoči betonski plošči vibroizolacija železniške proge pretočnost delcev particle damping particle damping elements vibration isolation floating concrete slab isolation railway track vibration isolation particle flowability true false false Slovenski jezik Angleški jezik Magistrsko delo/naloga 2025-09-13 08:31:15 2025-09-13 08:31:17 2025-11-05 03:35:52 0000-00-00 00:00:00 2025 0 0 XX, 57 str. 2025 0000-00-00 NiDoloceno NiDoloceno NiDoloceno 0000-00-00 0000-00-00 0000-00-00 539.67:550.34.016(043.2) 276323 249456131 43845.pdf 43845.pdf 1 33457FDC26956AC1AAF7654F6E92915D b3f44a63e25342550958aa8a8ec14daadf562323a5599b77056e77f1f5911eb5 16585336-906b-11f0-9328-0050569b8976 https://repozitorij.uni-lj.si/Dokument.php?lang=slv&id=217321 Fakulteta za strojništvo 0 0 0