20.500.12556/RUL-171297 V enem procesu 3D natisnjeni samo-zavedni metamateriali za zmanjševanje vibracijskega odziva Single-process 3D printed self-aware metamaterials for vibration attenuation V delu je predstavljena uporaba metamaterialov za zniževanje vibracijskega odziva. Prek obravnave več-materialne osnovne celice, zgrajene iz osnovne strukture, resonatorja in načrtovanih prevodnih poti, so obravnavane lastnosti neskončnega 2D periodičnega metamateriala. S skrbno zasnovo metamaterial tvori pasovno zavrnitveni filter (PZF) v željenem frekvenčnem območju, kjer je onemogočeno prosto širjenje valovanj. PZF identificiramo s pomočjo disperzijskih krivulj, izračunanih z inverznim pristopom. Metamaterial je bil nato izdelan s pomočjo več-materialnega 3D tiskanja. Izdelana struktura je zmožna tvoriti PZF, ki ga lahko prilagajamo s segrevanjem strukture preko dovedene napetosti. Struktura je bila na več mestih električno kontaktirana in testirana na samozavednost. Rezultati so potrdili samozavedno funkcijo metamateriala, ki je odvisna od lokacije zaznavne celice (senzorja) in velikosti dovedene napetosti. In this work, the use of metamaterials for reducing vibration response is presented. By investigating a multi-material unit cell, constructed from a basic structure, a resonator, and designed conduction paths, the properties of an infinite 2D periodic metamaterial are examined. Through careful design, the metamaterial forms bandgap in the desired frequency range, where the free propagation of waves is inhibited. The bandgap is identified using dispersion curves computed through an inverse approach. The metamaterial was then fabricated using multi-material 3D printing. The fabricated structure is capable of forming bandgap, which can be tuned by heating the structure through the applied voltage. The structure was electrically contacted at multiple points and tested for self-awareness. The results confirmed the self-aware functionality of the metamaterial, which depends on the sensor cell location and the magnitude of the applied voltage. metamateriali pasovno zavrnitveni filtri Blochov teorem metoda končnih elementov nehomogena korelacija valovanja disperzijske krivulje piezoelektričnost samozavednost 3D tisk metamaterials bandgaps Bloch theorem finite element method inhomogeneous wave correlation dispersion curves piezoresistivity self-awareness 3D-print true false false Slovenski jezik Angleški jezik Magistrsko delo/naloga 2025-08-22 08:30:33 2025-08-22 08:30:36 2025-08-28 03:38:53 0000-00-00 00:00:00 2025 0 0 XXII, 54 str. 2025 0000-00-00 NiDoloceno NiDoloceno NiDoloceno 0000-00-00 0000-00-00 0000-00-00 531.391:539.433:004.92(043.2) 274528 246535939 42871.pdf 42871.pdf 1 9709F1BE2718A408E81E1E300235E7C7 c1d70c428d7d47b6779cfe898cbdd816573b287e5f0785bdb1228a791eae1bed 6c357a69-7f21-11f0-9328-0050569b8976 https://repozitorij.uni-lj.si/Dokument.php?lang=slv&id=214523 Fakulteta za strojništvo 0 0 0