Analiza vibracija stola za izolaciju vibracija

undergraduate thesis

• Title (english): Vibration analysis of vibration isolation table
• Author: Ivan Perica
• Mentor: Marko Jokić (mentor)
• Committee member: Tanja Jurčević-Lulić (predsjednik povjerenstva)
• Committee member: Marko Jokić (član povjerenstva)
• Committee member: Severino Krizmanić (član povjerenstva)
• Granter: University of Zagreb; Faculty of Mechanical Engineering and Naval Architecture; Zagreb
• Defense date and country: 2022-09-29, Croatia
• Scientific / art field, discipline and subdiscipline: TECHNICAL SCIENCES; Mechanical Engineering; General Mechanical Engineering (Construction)

Abstract

Kako znanost i industrija napreduju, napredak je u sve manjim inkrementima i na sve nižoj razini. Za proučavanje, mjerenje i dokumentiranje takvih fenomena, potrebno je koristiti vrlo preciznu mjernu opremu. Korištenje vrlo precizne opreme zahtijeva i vrlo kontrolirane uvjete u kojima se ona primjenjuje, jer mjerenje je pouzdano koliko i najslabija karika mjernog postava. Jedan od poremećaja koji najviše utječu na točnost i pouzdanost mjerenja su mehaničke vibracije. Vibracije dolaze u raznim oblicima a najproblematičnije su nisko-frekvencijske vibracije prenesene sa okoline kroz podlogu na mjerni postav. Mjerni postav potrebno je izolirati od takvih vibracija kako bi one u što manjoj mjeri utjecale na rezultate eksperimenata. Za tu svrhu se primjenjuju stolovi za izolaciju vibracija, koji se najčešće sastoje od masivne ploče oslonjene na četiri noge sa prigušnim i opružnim elementima. U ovome radu dan je pregled izvedbi stolova za izolaciju vibracija. Nakon pregleda, odabrana je pasivna izvedba stola za izolaciju vibracija i načinjen matematički model. Matematički model stavljen je u prostor stanja, te je takav unesen u računalni program Matlab, gdje je analiziran kako bi se uočili utjecaji prigušenja i krutosti sustava na njegov odziv.

Abstract (english)

With today’s rate in science and industry advancements, improvements are smaller and smaller and at a much lower level. For observing, measuring and documenting phenomena needed for advancement, it is necessary to use very precise measuring equipment. The use of that equipment requires highly controlled environment in which it is used, because the experiment is as precise and as reliable as its weakest link. One of the biggest disturbances influencing the measuring precision are mechanical vibrations. Mechanical vibrations come in all kinds of forms, but the most problematic are the low frequency vibrations translated from the environment through foundation to the experimental setup. It is required to isolate the experimental setup from those kinds of vibrations and make them influence the measuring processes as little as possible. Optical tables are used for that purpose. They are most often comprised of a massive breadboard supported by 4 legs with isolation elements. In this paper an overview of the types of optical tables is given. After the overview, the passive isolation was chosen for the analysis and a mathematical model was made. Mathematical model was converted into a state space model and was imported into software called Matlab, where it was analyzed for the purpose of observing how the elastic and damping elements influence the response of the system.

• Keywords: Stol za izolaciju vibracija; Analiza vibracija; Prisilne vibracije; Izolacija vibracija
• Keywords (english): Optical tables; Vibration analysis; Forced vibrations; Vibration isolation
• Language: croatian
• URN:NBN: urn:nbn:hr:235:195733
• Study programme: Title: Mechanical Engineering; Study programme type: university; Study level: undergraduate; Academic / professional title: sveučilišni/a prvostupnik/ prvostupnica (baccalaureus/baccalaurea) inženjer/inženjerka strojarstva (sveučilišni/a prvostupnik/ prvostupnica (baccalaureus/baccalaurea) inženjer/inženjerka strojarstva)
• Type of resource: Text
• File origin: Born digital
• Access conditions: Open access
• Created on: 2022-09-23 11:52:16