Numerička analiza Stockbridgeovog prigušivača

undergraduate thesis

• Title (english): Numerical analysis of Stockbridge damper
• Author: Josip Zeba
• Mentor: Marko Jokić (mentor)
• Granter: University of Zagreb; Faculty of Mechanical Engineering and Naval Architecture; Zagreb
• Defense date and country: 2016-03-02, Croatia
• Scientific / art field, discipline and subdiscipline: TECHNICAL SCIENCES; Mechanical Engineering

Abstract

U ovom radu opisane su eolske vibracije vodiča dalekovoda, uzrok njihove pojave i posljedice koje imaju na uže. Ukratko je opisan osnovni vibracijski sustav te su prikazane osnovne jednadžbe. Detaljno je opisana konstrukcija Stockbridge prigušivača vibracija te su definirani pojmovi snage koju prigušivač disipira, mehaničke impedancije i faznog kuta između sile i brzine. Napravljen je numerički model (metoda konačnih elemenata) takvog prigušivača korištenjem programskog paketa Abaqus te su provedene frekvencijska i dinamička analiza prigušivača. Također je prikazano eksperimentalno ispitivanje istog prigušivača koje je provedeno u tvrtki Dalekovod d.d. Na kraju je prikazana usporedba jednog i drugog ispitivanja u odgovarajućim dijagramskim prikazima kako bi se verificirala točnost numeričkog modela prigušivača vibracija.

Abstract (english)

This thesis describes aeolian vibrations of transmission line conductors, the cause of their occurrence and effects which they have on a rope. Shortly it describes basic vibration system and presents basic equations. Design of Stockbridge vibration damper is described in details and terms of power dissipated by the damper, mechanical impedance, as well as the phase angle between the force and the speed. Furthermore, numerical model (finite elements method) of mentioned damper is designed by using a software package Abaqus and frequency and dynamic analysis of damper are conducted. Also, experimental testing of the damper, conducted in the Dalekovod d.d. company, is presented in this thesis. In the end, thesis represents the comparison of the two tests in appropriate diagrams to verify the accuracy of the numerical model of vibration dampers.

• Keywords: Stockbridgeov prigušivač; eolske vibracije; numerička analiza
• Keywords (english): Stockbridge damper; aeolian vibration; numerical analysis
• Language: croatian
• URN:NBN: urn:nbn:hr:235:821343
• 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: 2019-05-22 16:15:54